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Fungus causing Stock Photos and Images
RMRE044X–. The diseases of animals; a book of brief and popular advice on the care and the common ailments of farm animals. Veterinary medicine; Domestic animals. Fig. 58. Lumpy jaw, Actinomycosis bovis. sufficient, it may be repeated in two weeks. At the same time that the iodide of potash is being given, a severe blister should be applied to the lump or tumor. In most cases, it is thought that the fungus grows out- side the animal body on material that may be taken as food, and, entering a wound, is capable of growing and causing the disease. If the tumor is not large, or is not discharging so as to
RF2HBA114–Rhizopus fungus, illustration. Some Rhizopus species are opportunistic agents of humans causing Mucormycosis, a serious fungal infection, usually in p
RMRH0YBJ–. Bulletin. Agriculture -- New Hampshire. 268 SEVENTEENTH AND EIGHTEENTH elled and distorted, eventually dropping off. The fungus also attacks the stems of apples, sometimes causing the young. Fig. 11. Apples affected with scab fungus (photo by Lamson). fruit to shrivel and fall. But the most serious effects of this parasite are found on the fruit. Here the fungus pro- duces olive-black spots, which in their late stages have a narrow margin of light gray. When the scab spots are abundant the fruit is often dwarfed, cracked and deformed;. Please note that these images are extracted from scanned
RF2HBA11B–Rhizopus fungus, illustration. Some Rhizopus species are opportunistic agents of humans causing Mucormycosis, a serious fungal infection, usually in p
RMRM6Y7N–. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). ?, mm? w.. quince and pear, causing it to crack. This is the same fungus which attacks stocks of pear and quince and renders the growing of them precarious. I have heard complaints from the large quince growers in the western part of the state that the fruit often blasts shortly after setting and there is reason to believe that Fig. 3.—-Apple Scab Spots this fungus is the cause of much of the 071 a Leaf. mischief. This trouble is so serious in some place
RF2HBA117–Rhizopus fungus, illustration. Some Rhizopus species are opportunistic agents of humans causing Mucormycosis, a serious fungal infection, usually in p
RMRM74HE–. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 10. Black-spot of peach [HiWs Chili). fungus generally appears when the peach is very small, as irregu- lar mold}' or frost-like patches upon the surface (Fig. 9). Later on. these patches become brown and hard and the peach cracks. The same mildew also attacks the leaves, covering them with a whitish mold-like substance and causing them to become hard and curled. The fungus is common to many plants. Please note that these images are extracted from scanne
RF2HBA119–Rhizopus fungus, illustration. Some Rhizopus species are opportunistic agents of humans causing Mucormycosis, a serious fungal infection, usually in p
RMREKY71–. Citrus fruits; an account of the citrus fruit industry, with special reference to California requirements and practices and similar conditions. Citrus fruit industry; Citrus fruit industry. 282 Citrus Fruits swimming into the stomates or natural breathing pores and causing decay. This fungus causes most trouble near the coast, and low-hanging fruit need not be picked early in the interior valleys on this account. Occasionally oranges are picked according to size on orders from the packing-house which desires a preponder- ance of large or small sizes as the case may be to meet the requirement
RF2HBA10R–Rhizopus fungus, illustration. Some Rhizopus species are opportunistic agents of humans causing Mucormycosis, a serious fungal infection, usually in p
RMRJD91T–. The cereals in America. Grain. ENEMIES OF WHEAT 97. known remedy. A great deal of study has been given to the discovery or production of rust proof varieties of wlieat, with as yet little if any success. 147. Wheat Scab.—The scab fungus is believed to be tlie conidial stage of a fungus which in its ascigerous stage is called GibbereUa saubinettii (Mont.) Sacc The fungus attacks the glumes, causing dead sections of the spike, whose brown color is in striking contrast with the green healthy glumes. At times the whole spike is destroyed. It may be identified by the pink incrustations at the bas
RF2HBA10Y–Rhizopus fungus, illustration. Some Rhizopus species are opportunistic agents of humans causing Mucormycosis, a serious fungal infection, usually in p
![. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 30 DISEASES OF CROPS. plants, " sucking" their juices, and thereby causing disease. Prevention.—(1) Destroy all refuse from the pea crop, as it harbours the resting-spores of this fungus. (2) Parm- yard manure, from cattle fed on vetches and peas, should not be used for manuring land required for peas and vetches. The reason of this is, that the resting-spores of. Fig. 10.—Peronospoea vicie. The mould of vetcties and peas (caosiDg brownish patches on the leaves, etc.) Stock Photo](https://c8.alamy.com/comp/RDDYK0/the-diseases-of-crops-and-their-remedies-a-handbook-of-economic-biology-for-farmers-and-students-plant-diseases-30-diseases-of-crops-plants-quot-suckingquot-their-juices-and-thereby-causing-disease-prevention1-destroy-all-refuse-from-the-pea-crop-as-it-harbours-the-resting-spores-of-this-fungus-2-parm-yard-manure-from-cattle-fed-on-vetches-and-peas-should-not-be-used-for-manuring-land-required-for-peas-and-vetches-the-reason-of-this-is-that-the-resting-spores-of-fig-10peronospoea-vicie-the-mould-of-vetcties-and-peas-caosidg-brownish-patches-on-the-leaves-etc-RDDYK0.jpg ". The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 30 DISEASES OF CROPS. plants, " sucking" their juices, and thereby causing disease. Prevention.—(1) Destroy all refuse from the pea crop, as it harbours the resting-spores of this fungus. (2) Parm- yard manure, from cattle fed on vetches and peas, should not be used for manuring land required for peas and vetches. The reason of this is, that the resting-spores of. Fig. 10.—Peronospoea vicie. The mould of vetcties and peas (caosiDg brownish patches on the leaves, etc.) Stock Photo")
RMRDDYK0–. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 30 DISEASES OF CROPS. plants, " sucking" their juices, and thereby causing disease. Prevention.—(1) Destroy all refuse from the pea crop, as it harbours the resting-spores of this fungus. (2) Parm- yard manure, from cattle fed on vetches and peas, should not be used for manuring land required for peas and vetches. The reason of this is, that the resting-spores of. Fig. 10.—Peronospoea vicie. The mould of vetcties and peas (caosiDg brownish patches on the leaves, etc.)
RF2HBA10T–Rhizopus fungus, illustration. Some Rhizopus species are opportunistic agents of humans causing Mucormycosis, a serious fungal infection, usually in p
RMRP8PHE–. The American florist : a weekly journal for the trade. Floriculture; Florists. 368 The American Florist. Mar. 25, plenty of fresh air and to dry up the superfluous moisture from the miniature plants without causing strong draughts. The Late Frank H. Brard. (See obituary page 377.) over them or exposing them to the full sun, but it is sometimes very difiieult to avoid an outbreak of fungus among the young ferns when the weather hap- pens to remain damp and cloudy for several days together, as is liable to occur in late winter and early spring. The snails have voracious appetites for young fer
RMRG33GW–. California plant diseases. Plant diseases. Fig. 54.—Green and blue mold rot of lemon (Penicillium digitatum and italicum). ing black. A mass of gum exudes at this point. This fungus, which is the same as that causing the cottony mold, occasionally infects the tree itself, both with lemons and other citrus trees, with the effect just. Fig. 55.—Supposed effect of wither-tip fungus on lemon fruit (Colletotrichum gloeosporioides). described. The infection comes from spores produced by the growth of the fungus upon the green manure crop. Not serious. This effect is sometimes confused with that of
RMRH1MHE–. British fungi. Fungi -- Great Britain; Botany -- Great Britain; Lichens. DISEASES CAUSED BY FUNGI 55 during the winter on tlie dead, fallen leaves, and the fungus thus continues its annual cycle of development. In this instance the course of the fungus can be arrested by clearing away and burning all fallen infected leaves before the spores are liberated and dispersed by wind, animals, insects, etc., in the spring. Going to the other extreme, where the parasite has evolved the method of living along with its host-plant witliout causing injury, but, on the other hand, actually enabling the ho
![. Botany of the living plant. Botany; Plants. FUNGI. INTRODUCTORY 395 I '//;] P El: A ferment has been extracted from large cultures of a certain Botrytis, and found to act upon cell-walls, causing them to swell. Such swelling is a feature of the perforation by the invading hypha, which first softens the cell-wall, and then penetrates the softened mass, finally emerging on the other side (Fig. 294, iii.-viii.). This power of perforation has been found in certain cases to depend upon the nutrition of the Fungus: for instance, Sclerotinia sclerotioriun can only pene- trate living tissue after a Stock Photo](https://c8.alamy.com/comp/RH80X8/botany-of-the-living-plant-botany-plants-fungi-introductory-395-i-p-el-a-ferment-has-been-extracted-from-large-cultures-of-a-certain-botrytis-and-found-to-act-upon-cell-walls-causing-them-to-swell-such-swelling-is-a-feature-of-the-perforation-by-the-invading-hypha-which-first-softens-the-cell-wall-and-then-penetrates-the-softened-mass-finally-emerging-on-the-other-side-fig-294-iii-viii-this-power-of-perforation-has-been-found-in-certain-cases-to-depend-upon-the-nutrition-of-the-fungus-for-instance-sclerotinia-sclerotioriun-can-only-pene-trate-living-tissue-after-a-RH80X8.jpg ". Botany of the living plant. Botany; Plants. FUNGI. INTRODUCTORY 395 I '//;] P El: A ferment has been extracted from large cultures of a certain Botrytis, and found to act upon cell-walls, causing them to swell. Such swelling is a feature of the perforation by the invading hypha, which first softens the cell-wall, and then penetrates the softened mass, finally emerging on the other side (Fig. 294, iii.-viii.). This power of perforation has been found in certain cases to depend upon the nutrition of the Fungus: for instance, Sclerotinia sclerotioriun can only pene- trate living tissue after a Stock Photo")
RMRH80X8–. Botany of the living plant. Botany; Plants. FUNGI. INTRODUCTORY 395 I '//;] P El: A ferment has been extracted from large cultures of a certain Botrytis, and found to act upon cell-walls, causing them to swell. Such swelling is a feature of the perforation by the invading hypha, which first softens the cell-wall, and then penetrates the softened mass, finally emerging on the other side (Fig. 294, iii.-viii.). This power of perforation has been found in certain cases to depend upon the nutrition of the Fungus: for instance, Sclerotinia sclerotioriun can only pene- trate living tissue after a
RMRDE4RD–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 661 Soon the sclerotia form as mustard-seed-like bodies. They are produced in great abundance on all media but neither these struc- tures nor the mycelium have yet been seen to bear spores of any kind. The fungus was first studied by Halsted =' and later by many others. It was described and named by Saccardo from speci- mens communicated by Stevens. S. cepivorum Berk. Minute, spherical, gregarious, black. It is found on various species of Allium, causing rot.. Fig. 447.—S. roUsii, sclerotia. Afte
RF2JE3P5X–Fungi Trichophyton mentagrophytes, the cause of athlete's foot (tinea pedis), scalp ringworm (tinea capitus), and nail infection (onychomycosis), illu
![. Botany of the living plant. Botany; Plants. Fig. 322. A, a sclerotium of Peziza, which has germinated and given rise to numerous trumpet-shaped discs. B, section through such a sclerotium (sc), and the Peziza disc (d) to which it has given rise. b= stalk. a=asci. Magnified and slightly diagrammatic. (From Marshall Ward.) purpurea, the Ergot of Rye, a fungus which causes a disease on Rye-crops. The fungus attacks the ovaries of the Rye and other Grasses at the flowering period, spreading over them and causing the condition known as " Honey-Dew." This is the conidial stage, and it is Stock Photo](https://c8.alamy.com/comp/RH4RW7/botany-of-the-living-plant-botany-plants-fig-322-a-a-sclerotium-of-peziza-which-has-germinated-and-given-rise-to-numerous-trumpet-shaped-discs-b-section-through-such-a-sclerotium-sc-and-the-peziza-disc-d-to-which-it-has-given-rise-b=-stalk-a=asci-magnified-and-slightly-diagrammatic-from-marshall-ward-purpurea-the-ergot-of-rye-a-fungus-which-causes-a-disease-on-rye-crops-the-fungus-attacks-the-ovaries-of-the-rye-and-other-grasses-at-the-flowering-period-spreading-over-them-and-causing-the-condition-known-as-quot-honey-dewquot-this-is-the-conidial-stage-and-it-is-RH4RW7.jpg ". Botany of the living plant. Botany; Plants. Fig. 322. A, a sclerotium of Peziza, which has germinated and given rise to numerous trumpet-shaped discs. B, section through such a sclerotium (sc), and the Peziza disc (d) to which it has given rise. b= stalk. a=asci. Magnified and slightly diagrammatic. (From Marshall Ward.) purpurea, the Ergot of Rye, a fungus which causes a disease on Rye-crops. The fungus attacks the ovaries of the Rye and other Grasses at the flowering period, spreading over them and causing the condition known as " Honey-Dew." This is the conidial stage, and it is Stock Photo")
RMRH4RW7–. Botany of the living plant. Botany; Plants. Fig. 322. A, a sclerotium of Peziza, which has germinated and given rise to numerous trumpet-shaped discs. B, section through such a sclerotium (sc), and the Peziza disc (d) to which it has given rise. b= stalk. a=asci. Magnified and slightly diagrammatic. (From Marshall Ward.) purpurea, the Ergot of Rye, a fungus which causes a disease on Rye-crops. The fungus attacks the ovaries of the Rye and other Grasses at the flowering period, spreading over them and causing the condition known as " Honey-Dew." This is the conidial stage, and it is
RF2JE3P5Y–Fungi Trichophyton mentagrophytes, the cause of athlete's foot (tinea pedis), scalp ringworm (tinea capitus), and nail infection (onychomycosis), illu
RMRE0PBG–. Agricultural botany, theoretical and practical. Botany, Economic; Botany. POTATO ' WART' ;i3 round. All produce resting oospores which are developed within the tissues of the host, and set free when the latter decays; some of the oospores arise without a definite fertilisation act. Plasmopara viticola Berk, causes the ' downy or false mildew' on the vine, a disease far more destructive, and quite different from, the ' true vine-mildew,' mentioned on p. 757. The fungus attacks the leaves, young shoots and berries of the vine, causing these parts to turn brown and fall off. Bremia Lactvca Kege
RF2JE3P61–Fungi Trichophyton mentagrophytes, the cause of athlete's foot (tinea pedis), scalp ringworm (tinea capitus), and nail infection (onychomycosis), illu
RMRDC16C–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. 408 UBEDINEAE. cone rust. This disease is found on the cones of spruce. The aecidia are brown somewhat flattened spheres, and appear in large numbers on cones distinguished by their scales standing stiffly open even in damp weather (Fig. 243). The germ- tubes of the fungus find entrance in spring into the flowers or young spruce-cones, and the mycelium lives parasitic in the green scales without causing any marked c
RF2JE3P5H–Fungi Trichophyton mentagrophytes, the cause of athlete's foot (tinea pedis), scalp ringworm (tinea capitus), and nail infection (onychomycosis), illu
RMREKYE1–. Citrus fruits;. Citrus fruit industry; Citrus fruit industry. 282 Citrus Fruits swimming into the stomates or natural breathing pores and causing decay. This fungus causes most trouble near the coast, and low-hanging fruit need not be picked early in the interior valleys on this account. Occasionally oranges are picked according to size on orders from the packing-house which desires a preponder- ance of large or small sizes as the case may be to meet the requirements of some certain market. Sometimes, also, in the case of a very heavy crop, it is advisable to thin the fruit on the trees rath
RF2JE3P5P–Fungi Trichophyton mentagrophytes, the cause of athlete's foot (tinea pedis), scalp ringworm (tinea capitus), and nail infection (onychomycosis), illu
RMRGW7TE–. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Bui. 102, Bureau of Entomology, U. 5. Dept. of Agriculture. Plate IX.. Upper Figure, Sporotrichum Fungus Infecting Adult White Flies, Causing Them to Remain Attached to Underside of Leaf, Instead of Dropping as is Usual. Lower Figure, Larv/e and Pup/e of the Citrus and Cloudy-Winged White Flies Killed by Fumigation and Later Developing the White-Fringe Fungus. (Original.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and ap
RF2JE3P4F–Fungi Trichophyton mentagrophytes, the cause of athlete's foot (tinea pedis), scalp ringworm (tinea capitus), and nail infection (onychomycosis), illu
RMRDXNXD–. Botany of the living plant. Botany. 4o6 BOTANY OF THE LIVING PLANT hypha, which is beheved to contain a digestivefernieut (Fig. 342, 1. n.). A ferment has been extracted from large cultures of a certam Boirylis, and found to act upon cell-walls, causing them to swell. Such swelling is a feature of the perforation by the invading hypha, which first softens the cell-waU, and then seems to sink into the softened mass, finally emerging on the other side (Fig. 342, iii.-vm.). This power of perforation has been found in certain cases to depend upon the nutrition of the Fungus : for in- stance, Sde
RF2JE3P4J–Fungi Trichophyton mentagrophytes, the cause of athlete's foot (tinea pedis), scalp ringworm (tinea capitus), and nail infection (onychomycosis), illu
RMRG33J4–. California plant diseases. Plant diseases. 1126 UNIVERSITY OF CALIFORNIA EXPERIMENT STATION. Blue and Green Mold (Penicillium italicum and P. digitatum). See Orange. Twig Blight (Sclerotinia .lioertiana). The twigs die back from the tip in moist weather, showing to some extent a white moldy fungus upon the surface in which may be imbedded small, hard, seed-like bodies or sclerotia, at first white but finally becom-. Fig. 54.—Green and blue mold rot of lemon (Penicillium digitatum and italicum). ing black. A mass of gum exudes at this point. This fungus, which is the same as that causing the
RF2JE3P60–Fungi Trichophyton mentagrophytes, the cause of athlete's foot (tinea pedis), scalp ringworm (tinea capitus), and nail infection (onychomycosis), illu
RMRDAAJ4–. A text-book of botany for secondary schools. Botany. Fig. 150.—Mushroom with spine-hke Fig. 151.—The common edible coral processes instead of gills. — After fungus.—After Gibson. Gibson. that attack forest-trees. The mycelium usually spreads between the bark and the wood, sending special absorbing branches into the wood, often even into the heart wood, causing decay and weakening of the stem. The spore- bearing structures are sent to the surface, and appear as toadstools, bracket Fungi, etc. Spores are produced in great profusion and infect other trees, the new mycelium using wounds to effec
RF2JE3P5C–Fungi Trichophyton mentagrophytes, the cause of athlete's foot (tinea pedis), scalp ringworm (tinea capitus), and nail infection (onychomycosis), illu
RMRDE4M0–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases.. eral fungi suffocate plants, causing death with or with- out true parasitism. A shelf fungus not uncommon in Min- nesota grows on the ground and often envelopes the bases of shrubs or sap- lings with its dark brown fruiting body. When it meets seedlings this envelopment may prevent the further growth of the host and suffocation re- sults. One of the black fungi attacks several kinds of grass plants and prevents the unfold- ing of the leaves and finally causes the death of its host plant. Stunting of plants and plant parts.
![. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 28 DISEASES OF CROPS. the larva of this insect causes considerable damage to the crops of Russia. Prevention.—As the caterpillars feed upon nettles and low-growing grasses, these should be cleared away. Cure.—A good dusting with lime or soot is a sure remedy for this pest. The Pea Mildew {Erysiphe Martii, Fig. 9) is very destructive, as it " grows on both sides of the leaves," causing white spots. The spores of this fungus throw out. >.zoo. Fig. 9.—Pea Mildew (Erys Stock Photo](https://c8.alamy.com/comp/RDGX8P/the-diseases-of-crops-and-their-remedies-a-handbook-of-economic-biology-for-farmers-and-students-plant-diseases-28-diseases-of-crops-the-larva-of-this-insect-causes-considerable-damage-to-the-crops-of-russia-preventionas-the-caterpillars-feed-upon-nettles-and-low-growing-grasses-these-should-be-cleared-away-curea-good-dusting-with-lime-or-soot-is-a-sure-remedy-for-this-pest-the-pea-mildew-erysiphe-martii-fig-9-is-very-destructive-as-it-quot-grows-on-both-sides-of-the-leavesquot-causing-white-spots-the-spores-of-this-fungus-throw-out-gtzoo-fig-9pea-mildew-erys-RDGX8P.jpg ". The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 28 DISEASES OF CROPS. the larva of this insect causes considerable damage to the crops of Russia. Prevention.—As the caterpillars feed upon nettles and low-growing grasses, these should be cleared away. Cure.—A good dusting with lime or soot is a sure remedy for this pest. The Pea Mildew {Erysiphe Martii, Fig. 9) is very destructive, as it " grows on both sides of the leaves," causing white spots. The spores of this fungus throw out. >.zoo. Fig. 9.—Pea Mildew (Erys Stock Photo")
RMRDGX8P–. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 28 DISEASES OF CROPS. the larva of this insect causes considerable damage to the crops of Russia. Prevention.—As the caterpillars feed upon nettles and low-growing grasses, these should be cleared away. Cure.—A good dusting with lime or soot is a sure remedy for this pest. The Pea Mildew {Erysiphe Martii, Fig. 9) is very destructive, as it " grows on both sides of the leaves," causing white spots. The spores of this fungus throw out. >.zoo. Fig. 9.—Pea Mildew (Erys
![. The fungi which cause plant disease . Plant diseases; Fungi. 610 THE FUNGI WHICH. CAUSE PLANT DISEASE A genus of some seventy-five species. C. glomerulosum Sacc. on Juniperus leaves is often reported as Sporodesmium glomerulosum. C. carpophUum (L6v.) Aderh.*^- '"â ^''^' *^^ Aderhold by inocu- lations, properly controlled, showed this fungus capable of causing gummosis of prunaceous hosts though C. herbarium did not do so. Effuse, hyphsB simple or short-branched, densely aggregated, septate, conidia elongate-fusoid, obtuse, 4 to 5-septate, slightly con- stricted at the septa. It is commo Stock Photo](https://c8.alamy.com/comp/RDE504/the-fungi-which-cause-plant-disease-plant-diseases-fungi-610-the-fungi-which-cause-plant-disease-a-genus-of-some-seventy-five-species-c-glomerulosum-sacc-on-juniperus-leaves-is-often-reported-as-sporodesmium-glomerulosum-c-carpophuum-l6v-aderh-quot-aderhold-by-inocu-lations-properly-controlled-showed-this-fungus-capable-of-causing-gummosis-of-prunaceous-hosts-though-c-herbarium-did-not-do-so-effuse-hyphsb-simple-or-short-branched-densely-aggregated-septate-conidia-elongate-fusoid-obtuse-4-to-5-septate-slightly-con-stricted-at-the-septa-it-is-commo-RDE504.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 610 THE FUNGI WHICH. CAUSE PLANT DISEASE A genus of some seventy-five species. C. glomerulosum Sacc. on Juniperus leaves is often reported as Sporodesmium glomerulosum. C. carpophUum (L6v.) Aderh.*^- '"â ^''^' *^^ Aderhold by inocu- lations, properly controlled, showed this fungus capable of causing gummosis of prunaceous hosts though C. herbarium did not do so. Effuse, hyphsB simple or short-branched, densely aggregated, septate, conidia elongate-fusoid, obtuse, 4 to 5-septate, slightly con- stricted at the septa. It is commo Stock Photo")
RMRDE504–. The fungi which cause plant disease . Plant diseases; Fungi. 610 THE FUNGI WHICH. CAUSE PLANT DISEASE A genus of some seventy-five species. C. glomerulosum Sacc. on Juniperus leaves is often reported as Sporodesmium glomerulosum. C. carpophUum (L6v.) Aderh.*^- '"â ^''^' *^^ Aderhold by inocu- lations, properly controlled, showed this fungus capable of causing gummosis of prunaceous hosts though C. herbarium did not do so. Effuse, hyphsB simple or short-branched, densely aggregated, septate, conidia elongate-fusoid, obtuse, 4 to 5-septate, slightly con- stricted at the septa. It is commo
RMRDEX44–. Diseases of economic plants . Plant diseases. 90 DISEASES OF ECONOMIC PLANTS. Fig. 35. — Hypochnose, showing aclerotia on twig at left and rhizomorphic strands pn twig at right. Original. gether with the sclerotia •and extending along the twig longitudinally are also found silvery, glis- tening, thread-like, fun- gous growths. This fungus hibernates in the sclerotia on or near the terminal bud and thence invades the new twigs as they develop, reaching out upon each leaf, spreading over its under surface in almost invisible thinness, and causing it to droop, die, and eventually to fall away.
RMRDE52W–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 587 the injured cuticle and causing rot. A ring of pink conidiophores and conidia is formed around the margin of the scab. Inoculation tests showed the fungus unable to penetrate through sound cuticle though it readily made entrance through wounds. It has been occasionally reported on living twigs and leaves and as a common saprophyte has long been known. The first account of it in America was from New York ^^ in 1902 though it was described in 1899 as injuring pears in Germany.^^^ Mycogone Link
RMRR1D52–. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Vol. IX. No. 219, THE AGRICULTURAL NEWS. 299. A HANDBOOK OF THE FUNGUS DISEASES OF WEST INDIAN PLAXTS, By Keith Bancroft, B.A. Geo. Fuli/mn <C- Sons, Ltd., Loivdon. This book, as its name indicates, contains, in a small compass, a short account of each of the diseases of plants grown in the West Indies, more especially of those which are of economic importance The diseases are arranged according to the systematic classification of the fungi causing them, and not under the names of the various host plants. This d
![. The Canadian horticulturist [monthly], 1897. Gardening; Canadian periodicals. VALLEY OF THE DON.. Fig. 114S. —I'l.n.M Pockkts. E. hnijip^'S. There arc several forms of exoascus, affecting tlie cherry and plum, but the effects differ; that in the ])lum for causing what is commonl}' i-alled "plum pockets " (Fig. 1148). Since the fungus is perennial and lives over winter in the leaf buds, it is evident that trees once affected is likely to show the disease the succeed- ing season, providing climatic condi- tions are favorable. The remoxal of old canes, leaves no hiding place for worm Stock Photo](https://c8.alamy.com/comp/RFXE5K/the-canadian-horticulturist-monthly-1897-gardening-canadian-periodicals-valley-of-the-don-fig-114s-ilnm-pockkts-e-hnijips-there-arc-several-forms-of-exoascus-affecting-tlie-cherry-and-plum-but-the-effects-differ-that-in-the-lum-for-causing-what-is-commonl-i-alled-quotplum-pockets-quot-fig-1148-since-the-fungus-is-perennial-and-lives-over-winter-in-the-leaf-buds-it-is-evident-that-trees-once-affected-is-likely-to-show-the-disease-the-succeed-ing-season-providing-climatic-condi-tions-are-favorable-the-remoxal-of-old-canes-leaves-no-hiding-place-for-worm-RFXE5K.jpg ". The Canadian horticulturist [monthly], 1897. Gardening; Canadian periodicals. VALLEY OF THE DON.. Fig. 114S. —I'l.n.M Pockkts. E. hnijip^'S. There arc several forms of exoascus, affecting tlie cherry and plum, but the effects differ; that in the ])lum for causing what is commonl}' i-alled "plum pockets " (Fig. 1148). Since the fungus is perennial and lives over winter in the leaf buds, it is evident that trees once affected is likely to show the disease the succeed- ing season, providing climatic condi- tions are favorable. The remoxal of old canes, leaves no hiding place for worm Stock Photo")
RMRFXE5K–. The Canadian horticulturist [monthly], 1897. Gardening; Canadian periodicals. VALLEY OF THE DON.. Fig. 114S. —I'l.n.M Pockkts. E. hnijip^'S. There arc several forms of exoascus, affecting tlie cherry and plum, but the effects differ; that in the ])lum for causing what is commonl}' i-alled "plum pockets " (Fig. 1148). Since the fungus is perennial and lives over winter in the leaf buds, it is evident that trees once affected is likely to show the disease the succeed- ing season, providing climatic condi- tions are favorable. The remoxal of old canes, leaves no hiding place for worm
![. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 28 DISEASES OF CROPS. tte larva of tlds insect causes considerable damage to the crops of Eussia. Prevention.—As the caterpUlars feed upon nettles and low-growing grasses, these should be cleared away. Cure.—A good dusting with lime or soot is a sure remedy for this pest. The Pea Mildew {Erysiphe Martii, Fig. 9) is very destructive, as it " grows on both sides of the leaves," causing white spots. The spores of this fungus throw out. Fig. 9.—Pea Mildew {Erysiphe Martii Stock Photo](https://c8.alamy.com/comp/RDDYK4/the-diseases-of-crops-and-their-remedies-a-handbook-of-economic-biology-for-farmers-and-students-plant-diseases-28-diseases-of-crops-tte-larva-of-tlds-insect-causes-considerable-damage-to-the-crops-of-eussia-preventionas-the-caterpulars-feed-upon-nettles-and-low-growing-grasses-these-should-be-cleared-away-curea-good-dusting-with-lime-or-soot-is-a-sure-remedy-for-this-pest-the-pea-mildew-erysiphe-martii-fig-9-is-very-destructive-as-it-quot-grows-on-both-sides-of-the-leavesquot-causing-white-spots-the-spores-of-this-fungus-throw-out-fig-9pea-mildew-erysiphe-martii-RDDYK4.jpg ". The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 28 DISEASES OF CROPS. tte larva of tlds insect causes considerable damage to the crops of Eussia. Prevention.—As the caterpUlars feed upon nettles and low-growing grasses, these should be cleared away. Cure.—A good dusting with lime or soot is a sure remedy for this pest. The Pea Mildew {Erysiphe Martii, Fig. 9) is very destructive, as it " grows on both sides of the leaves," causing white spots. The spores of this fungus throw out. Fig. 9.—Pea Mildew {Erysiphe Martii Stock Photo")
RMRDDYK4–. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 28 DISEASES OF CROPS. tte larva of tlds insect causes considerable damage to the crops of Eussia. Prevention.—As the caterpUlars feed upon nettles and low-growing grasses, these should be cleared away. Cure.—A good dusting with lime or soot is a sure remedy for this pest. The Pea Mildew {Erysiphe Martii, Fig. 9) is very destructive, as it " grows on both sides of the leaves," causing white spots. The spores of this fungus throw out. Fig. 9.—Pea Mildew {Erysiphe Martii
RMRH81NC–. Botany of the living plant. Botany. 4o6 BOTANY OF THE LWING PLANT hypha, which is believed to contain a digestive ferment (Fig. 342, i. ii.). A ferment has been extracted from large cultures of a certain Botrytis, and found to act upon cell-walls, causing them to swell. Such swelling is a feature of the perforation by the invading hypha, which first softens the cell-wall, and then seems to sink into the softened mass, finally emerging on the other side (Fig. 342, iii.-viii.). This power of perforation has been found in certain cases to depend upon the nutrition of the Fungus : for in- stance
RMRM74TH–. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). Diseases of the Sugar Beet, 349 The leaves were usuall}^ unaffected until large portions of the fleshy roots had rotted. Cultures from diseased parts again yielded a fungus with structural characters exactly similar to those of the sore shin and damping off fungus. When the beet fungus was first isolated and studied I was sur- prised to find a fungus agreeing in structural details with the one causing damping off, radish rot, &c. The growth character
RMRGN610–. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. 12 MASS. EXPERIMENT STATION BULLETIN 422. Figure 11. Plum Pockets or Plum Bladders. Note large misshapen specimens, in comparison with healthy plum at lower left. Photo courtesy of Plant Pathology Department. Cornell University. Black knot, another common disease of beach plums, is caused by a fungus {Plowrightia morbosa). It develops in twigs and branches causing irregular knots which may become quite large. The surest method of control is to cut out and burn the knots. This should be done before January
RMRDPFXN–. My garden, its plan and culture together with a general description of its geology, botany, and natural history. Gardening. Fig. 852.âPuccinia lychnidearum, nat. size and magnified. Fig. 853.âHelmiiu..osporium pyrorum (x 700 diam.). Fig. 854.âSiberian Crab â Fungus (X 700 diam.). The fruit-trees are subject to the attack of a black fungus, of which we note particularly two.species, one the Helminthosporium tyrorum (fig 853), which attacks sometimes the Louise Bonne pear, and very frequently the Easter Beurr6, causing the fruit to crack and prematurely rot; so that really it is a very importa
RMRFXHEH–. Canadian forest industries January-June 1921. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. March 15, 1931 CANADA LUMBERMAN 93 Another very essential point is to remove all bark adhering to the surface of the wood to be treated. The bark, especially the thin layer called inner-bark, is practically impermeable and will prevent the preservative from reaching the wood, thus causing weak spots in the surface, from which fungus will have access to the untreated portion and render the treatment practically useless. A point closely related to this is t
RMRR1E4B–. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Vol. IX. No. 210. TffE AGRICULTURAL NEWS. 159 In the Agaricaceae, tlie fructification is of the type usually known as a toadstool. On the under surface of the umbrella-like expansion are long radiating gills, over the surface of which is the hymeniuni. The fructifications may or may not be stalked, and the stalk may be central or lateral, but the gills are. a constant feature. To this group belong Jlarasmius san-hnri, the fungus caus- ing root disease of sugar-cane (Fig. 27); Jfarasmins semim- tiis, causing disease
RMRGN604–. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. Figure 11. Plum Pockets or Plum Bladders. Note large misshapen specimens, in comparison with healthy plum at lower left. Photo courtesy of Plant Pathology Department. Cornell University. Black knot, another common disease of beach plums, is caused by a fungus {Plowrightia morbosa). It develops in twigs and branches causing irregular knots which may become quite large. The surest method of control is to cut out and burn the knots. This should be done before January 1, since the winter spores are formed fro
![. Farm forestry [microform]. Trees, Care of; Tree planting; Forêts privées; Arbres; Woodlots; Arbres. 8 food supply for the trees. Frequently the buruiug kills the >liailtnv roots or leaves them unprotected. The living tissue beneath the bark of the tree close to the ground becomes so heated that it is either killed or partly destroyed. The first visil)le effect may be seen in the form of a fungous growth aliout the base of the tree. Tliis parasitic fungus gradually weakens the tree, making it subjeet to insect ]>est^. and tinally causing its death, but the real and first cause was the Stock Photo](https://c8.alamy.com/comp/RENG7M/farm-forestry-microform-trees-care-of-tree-planting-forts-prives-arbres-woodlots-arbres-8-food-supply-for-the-trees-frequently-the-buruiug-kills-the-gtliailtnv-roots-or-leaves-them-unprotected-the-living-tissue-beneath-the-bark-of-the-tree-close-to-the-ground-becomes-so-heated-that-it-is-either-killed-or-partly-destroyed-the-first-visille-effect-may-be-seen-in-the-form-of-a-fungous-growth-aliout-the-base-of-the-tree-tliis-parasitic-fungus-gradually-weakens-the-tree-making-it-subjeet-to-insect-gtest-and-tinally-causing-its-death-but-the-real-and-first-cause-was-the-RENG7M.jpg ". Farm forestry [microform]. Trees, Care of; Tree planting; Forêts privées; Arbres; Woodlots; Arbres. 8 food supply for the trees. Frequently the buruiug kills the >liailtnv roots or leaves them unprotected. The living tissue beneath the bark of the tree close to the ground becomes so heated that it is either killed or partly destroyed. The first visil)le effect may be seen in the form of a fungous growth aliout the base of the tree. Tliis parasitic fungus gradually weakens the tree, making it subjeet to insect ]>est^. and tinally causing its death, but the real and first cause was the Stock Photo")
RMRENG7M–. Farm forestry [microform]. Trees, Care of; Tree planting; Forêts privées; Arbres; Woodlots; Arbres. 8 food supply for the trees. Frequently the buruiug kills the >liailtnv roots or leaves them unprotected. The living tissue beneath the bark of the tree close to the ground becomes so heated that it is either killed or partly destroyed. The first visil)le effect may be seen in the form of a fungous growth aliout the base of the tree. Tliis parasitic fungus gradually weakens the tree, making it subjeet to insect ]>est^. and tinally causing its death, but the real and first cause was the
![. Florists' review [microform]. Floriculture. Skptembeb 4, 1913. The Florists* Review 11. Greenhouse Built Over Boiling Spring in Yellowstone Park. it in check, and if so how is it to be applied? L. K. I have seen a little of the disease referred to, but never on any consider- able scale. It may have had its incep- tion in the cutting bench, a fungus in * the sand causing the trouble. It is ? more probable, however, that in your case it has been due in large measure to uncongenial atmospheric and soil conditions. A leaky roof would be sure to help spread fungous diseases. Spraying with a fungi Stock Photo](https://c8.alamy.com/comp/RRWB1M/florists-review-microform-floriculture-skptembeb-4-1913-the-florists-review-11-greenhouse-built-over-boiling-spring-in-yellowstone-park-it-in-check-and-if-so-how-is-it-to-be-applied-l-k-i-have-seen-a-little-of-the-disease-referred-to-but-never-on-any-consider-able-scale-it-may-have-had-its-incep-tion-in-the-cutting-bench-a-fungus-in-the-sand-causing-the-trouble-it-is-more-probable-however-that-in-your-case-it-has-been-due-in-large-measure-to-uncongenial-atmospheric-and-soil-conditions-a-leaky-roof-would-be-sure-to-help-spread-fungous-diseases-spraying-with-a-fungi-RRWB1M.jpg ". Florists' review [microform]. Floriculture. Skptembeb 4, 1913. The Florists* Review 11. Greenhouse Built Over Boiling Spring in Yellowstone Park. it in check, and if so how is it to be applied? L. K. I have seen a little of the disease referred to, but never on any consider- able scale. It may have had its incep- tion in the cutting bench, a fungus in * the sand causing the trouble. It is ? more probable, however, that in your case it has been due in large measure to uncongenial atmospheric and soil conditions. A leaky roof would be sure to help spread fungous diseases. Spraying with a fungi Stock Photo")
RMRRWB1M–. Florists' review [microform]. Floriculture. Skptembeb 4, 1913. The Florists* Review 11. Greenhouse Built Over Boiling Spring in Yellowstone Park. it in check, and if so how is it to be applied? L. K. I have seen a little of the disease referred to, but never on any consider- able scale. It may have had its incep- tion in the cutting bench, a fungus in * the sand causing the trouble. It is ? more probable, however, that in your case it has been due in large measure to uncongenial atmospheric and soil conditions. A leaky roof would be sure to help spread fungous diseases. Spraying with a fungi
RMREMH66–. Circular. Agriculture -- Massachusetts. Circular No. 51. (Revision of No. 40.) March, 1915. MASSACHUSETTS AGRICULTURAL EXPERIMENT STATION, AMHERST. DOWNY MILDEW OE CUCUMBERS. (Peronoplasmopara cubensis (B & C) CI.) By George E. Stone. Downy mildew, which is not difificult to distinguish from other leaf fungi, is most likely to occur on greenhouse cucumbers in August and September, and has never been observed by us in greenhouses in the winter. The fungus occurs on the under side of the leaf, causing whitish or yellowish angular spots (see Eig. i,) and these spots are more prominent on gr
RMREMH7G–. Circular. Agriculture -- Massachusetts. Circular No. 40. April, 1914. MASSACHUSETTS AGRICULTURAL EXPERIMENT STATION, AMHERST. DOWNY MILDEW OF CUCUMBERS. (Peronoplasmopara cubensis (B. & C.) CI.) By George E. Stone. Downy mildew, which is not difficult to distinguish from other leaf fungi, is most likely to occur on greenhouse cucumbers in August and September, and has never been observed by us in greenhouses in the winter. The fungus occurs on the under side of the leaf, causing whitish or yellowish angular spots on the leaves (see Fig. i), and these spots are more prominent on greenhous
![. Florists' review [microform]. Floriculture. 14 The Florists'Review Jllv 31, 11)13. lasters. Professor Galloway; as long a^^o as 1896, stated that this was caused by a fungus which enters the plant near the surface of the ground and fills up the water vessels of the stems, causing the plants to wilt and finally die. This disease shows itself most from the middle of July to the mid- dle of August. On cutting open the stems of affected plants near the sur- face of the ground, a dark discoloration is found in the outer edge of the harder woody portion of the stem, where it joins the solt bark po Stock Photo](https://c8.alamy.com/comp/RRTYG9/florists-review-microform-floriculture-14-the-floristsreview-jllv-31-1113-lasters-professor-galloway-as-long-ao-as-1896-stated-that-this-was-caused-by-a-fungus-which-enters-the-plant-near-the-surface-of-the-ground-and-fills-up-the-water-vessels-of-the-stems-causing-the-plants-to-wilt-and-finally-die-this-disease-shows-itself-most-from-the-middle-of-july-to-the-mid-dle-of-august-on-cutting-open-the-stems-of-affected-plants-near-the-sur-face-of-the-ground-a-dark-discoloration-is-found-in-the-outer-edge-of-the-harder-woody-portion-of-the-stem-where-it-joins-the-solt-bark-po-RRTYG9.jpg ". Florists' review [microform]. Floriculture. 14 The Florists'Review Jllv 31, 11)13. lasters. Professor Galloway; as long a^^o as 1896, stated that this was caused by a fungus which enters the plant near the surface of the ground and fills up the water vessels of the stems, causing the plants to wilt and finally die. This disease shows itself most from the middle of July to the mid- dle of August. On cutting open the stems of affected plants near the sur- face of the ground, a dark discoloration is found in the outer edge of the harder woody portion of the stem, where it joins the solt bark po Stock Photo")
RMRRTYG9–. Florists' review [microform]. Floriculture. 14 The Florists'Review Jllv 31, 11)13. lasters. Professor Galloway; as long a^^o as 1896, stated that this was caused by a fungus which enters the plant near the surface of the ground and fills up the water vessels of the stems, causing the plants to wilt and finally die. This disease shows itself most from the middle of July to the mid- dle of August. On cutting open the stems of affected plants near the sur- face of the ground, a dark discoloration is found in the outer edge of the harder woody portion of the stem, where it joins the solt bark po
RMREMGCG–. Circular. Agriculture; Agriculture -- United States. FUNGOUS DISEASES IN SHIPMENTS OF SUGAR CANE. 13 The organisms causing root-rot are wound parasites, usually living a saprophytic life in the soil. Wlien the cane is weakened from any cause, such as drought, poor cultivation, etc., the fungus can make an entrance into the roots. The root fii'st shows a reddening of the surface, followed by a brown discoloration, and finally a slow disin- tegration. Plants so affected are weak and dwarfed and easily blown over by the wind or uprooted. The lower leaf sheaths are frequently enveloped hi a wlii
![. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. THE BEACH PLUM 13 Brown rot, a er' common disease of peaches, cherries, and plums, is caused by the fungus Monilinia jruc ticola, which sometimes causes severe loss in one of several ways. It ma' infect (1) the blossoms, preventing the set of fruit (called "blossom blight"); (2) the twigs (called "twig blight); (3) large limbs, causing cankers; or (4) green or ripe fruit, especially where it has been injured by insects, causing it to rot. These (lecaed fruits dry, shri"el, and be- Stock Photo](https://c8.alamy.com/comp/RGN5Y8/bulletin-massachusetts-agricultural-experiment-station-agriculture-massachusetts-the-beach-plum-13-brown-rot-a-er-common-disease-of-peaches-cherries-and-plums-is-caused-by-the-fungus-monilinia-jruc-ticola-which-sometimes-causes-severe-loss-in-one-of-several-ways-it-ma-infect-1-the-blossoms-preventing-the-set-of-fruit-called-quotblossom-blightquot-2-the-twigs-called-quottwig-blight-3-large-limbs-causing-cankers-or-4-green-or-ripe-fruit-especially-where-it-has-been-injured-by-insects-causing-it-to-rot-these-lecaed-fruits-dry-shriquotel-and-be-RGN5Y8.jpg ". Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. THE BEACH PLUM 13 Brown rot, a er' common disease of peaches, cherries, and plums, is caused by the fungus Monilinia jruc ticola, which sometimes causes severe loss in one of several ways. It ma' infect (1) the blossoms, preventing the set of fruit (called "blossom blight"); (2) the twigs (called "twig blight); (3) large limbs, causing cankers; or (4) green or ripe fruit, especially where it has been injured by insects, causing it to rot. These (lecaed fruits dry, shri"el, and be- Stock Photo")
RMRGN5Y8–. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. THE BEACH PLUM 13 Brown rot, a er' common disease of peaches, cherries, and plums, is caused by the fungus Monilinia jruc ticola, which sometimes causes severe loss in one of several ways. It ma' infect (1) the blossoms, preventing the set of fruit (called "blossom blight"); (2) the twigs (called "twig blight); (3) large limbs, causing cankers; or (4) green or ripe fruit, especially where it has been injured by insects, causing it to rot. These (lecaed fruits dry, shri"el, and be-
RMREF7BF–. Comparative morphology of Fungi. Fungi. 324 COMPARATIVE MORPHOLOGY OF FUNGI forms maturing in the overwintering fruit, in the other representatives of the subgenus Stromatinia. In the forms on Rosaceae, the conidia are also formed on the fruits (often predominantly on these) so that an infec- tion from fruit may take place. In this manner the fungus may spread extremely rapidly, especially on stored fruit, causing the fruit industry enormous losses. The change, here described in detail for S. Urnula, of an imperfect form developing in spring on the young shoots of a host to a perfect form de
RMRG3424–. California plant diseases. Plant diseases. 1112 UNIVERSITY OF CALIFORNIA EXPERIMENT STATION. Root Knot (Nematode). Figure 41. Causes swellings all over the main and smaller roots. Found only in greenhouses. See page 1076. Control as in Stem Rot. Leaf Spot (Altcrnaria hrassicw, var. nigresccns). This fungus has been known to do considerable damage in a few cases, causing large dead spots, later covered with the black fruiting fungus. Not important as yet. Can be controlled with Bordeaux mixture. CURRANT. Mildew (Sphaerothcca mors-uvw). A white, powdery mildew on the leaves and fruit. Dust wit
![. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1095 APRICOT. Shot-Hole and Fruit Spot (Coryneum beyerinkii). Figure 22. This fungus is the same as that causing the peach blight and produces in the apricot a spotting of the fruit, shot-hole effect in the leaves and killing of the buds. Spray with Bordeaux mixture during November and again in spring just as the buds open. See bulletin 203, page 33, California Experiment Station.. Fio. 22.—Apricot shot-hole and leaf spot (.Coryneum beyerinkii),. Please note that these images are extracted from scanned page i Stock Photo](https://c8.alamy.com/comp/RG34DA/california-plant-diseases-plant-diseases-bulletin-218-california-plant-diseases-1095-apricot-shot-hole-and-fruit-spot-coryneum-beyerinkii-figure-22-this-fungus-is-the-same-as-that-causing-the-peach-blight-and-produces-in-the-apricot-a-spotting-of-the-fruit-shot-hole-effect-in-the-leaves-and-killing-of-the-buds-spray-with-bordeaux-mixture-during-november-and-again-in-spring-just-as-the-buds-open-see-bulletin-203-page-33-california-experiment-station-fio-22apricot-shot-hole-and-leaf-spot-coryneum-beyerinkii-please-note-that-these-images-are-extracted-from-scanned-page-i-RG34DA.jpg ". California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1095 APRICOT. Shot-Hole and Fruit Spot (Coryneum beyerinkii). Figure 22. This fungus is the same as that causing the peach blight and produces in the apricot a spotting of the fruit, shot-hole effect in the leaves and killing of the buds. Spray with Bordeaux mixture during November and again in spring just as the buds open. See bulletin 203, page 33, California Experiment Station.. Fio. 22.—Apricot shot-hole and leaf spot (.Coryneum beyerinkii),. Please note that these images are extracted from scanned page i Stock Photo")
RMRG34DA–. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1095 APRICOT. Shot-Hole and Fruit Spot (Coryneum beyerinkii). Figure 22. This fungus is the same as that causing the peach blight and produces in the apricot a spotting of the fruit, shot-hole effect in the leaves and killing of the buds. Spray with Bordeaux mixture during November and again in spring just as the buds open. See bulletin 203, page 33, California Experiment Station.. Fio. 22.—Apricot shot-hole and leaf spot (.Coryneum beyerinkii),. Please note that these images are extracted from scanned page i
RMRE3J4B–. Veterinary toxicology. Poisonous plants; Poisons; Veterinary drugs; Veterinary pharmacology. POISONOUS PLANTS 163 POISONING DUE TO DISEASED FORAGE AND MOULDS. The fungi apt to affect forage are Ustilago carbo, or smut, attacking grasses and grains ; Ustilago maydis, affecting. Fig. 8.—Smut of Oats. A, panicle of oats attacked from below upwards ; B, spikelet with the fungus in an early stage of growth; C, free spores of Ustilago carbo; D, spores germinating and producing yeast-like buds. (From Smith's ' Veterinary Hygiene.') maize; Pucciniagraminis, causing rust and mildew in grains; Clavice
![. Botany of the living plant. Botany. EU-MYCETES. ASCOMYCETES 437 wliich causes a disease on Rye-crops. The fungus attacks the ovaries of the Rye and other Grasses at the flowering period, spreading over them and causing the condition known as " Honey-Dew." This is the conidial stage, and it is spread from plant to plant by insects, which are attracted by a sugary secretion in which the conidia float (Fig. 369, rt, b ; also Fig. 341, p. 406). But the effect becomes more apparent as the crop ripens, for in place of the normal grains long curved bodies project from the ear (Fig. 369, c Stock Photo](https://c8.alamy.com/comp/RDY64P/botany-of-the-living-plant-botany-eu-mycetes-ascomycetes-437-wliich-causes-a-disease-on-rye-crops-the-fungus-attacks-the-ovaries-of-the-rye-and-other-grasses-at-the-flowering-period-spreading-over-them-and-causing-the-condition-known-as-quot-honey-dewquot-this-is-the-conidial-stage-and-it-is-spread-from-plant-to-plant-by-insects-which-are-attracted-by-a-sugary-secretion-in-which-the-conidia-float-fig-369-rt-b-also-fig-341-p-406-but-the-effect-becomes-more-apparent-as-the-crop-ripens-for-in-place-of-the-normal-grains-long-curved-bodies-project-from-the-ear-fig-369-c-RDY64P.jpg ". Botany of the living plant. Botany. EU-MYCETES. ASCOMYCETES 437 wliich causes a disease on Rye-crops. The fungus attacks the ovaries of the Rye and other Grasses at the flowering period, spreading over them and causing the condition known as " Honey-Dew." This is the conidial stage, and it is spread from plant to plant by insects, which are attracted by a sugary secretion in which the conidia float (Fig. 369, rt, b ; also Fig. 341, p. 406). But the effect becomes more apparent as the crop ripens, for in place of the normal grains long curved bodies project from the ear (Fig. 369, c Stock Photo")
RMRDY64P–. Botany of the living plant. Botany. EU-MYCETES. ASCOMYCETES 437 wliich causes a disease on Rye-crops. The fungus attacks the ovaries of the Rye and other Grasses at the flowering period, spreading over them and causing the condition known as " Honey-Dew." This is the conidial stage, and it is spread from plant to plant by insects, which are attracted by a sugary secretion in which the conidia float (Fig. 369, rt, b ; also Fig. 341, p. 406). But the effect becomes more apparent as the crop ripens, for in place of the normal grains long curved bodies project from the ear (Fig. 369, c
![. Florists' review [microform]. Floriculture. 60 The Florists' Review July 80. 1914. miscellaneous expenses incident thereto, $32,490." Vegetable Forcing CLUB SOOT ON CU0X7MBEBS. Can you tell me what causes club root on cucumbers? Is there any pre- rentivet H. H. Club Foot is caused by a fungus which develops within the cells of the roots, causing them to become distorted and often to die. After the plants die the spores become mixed with the soil, ready to fasten on some other host plant when conditions are favorable. Many of the common weeds are sub- ject to club root, but it is not usu Stock Photo](https://c8.alamy.com/comp/RRTEWE/florists-review-microform-floriculture-60-the-florists-review-july-80-1914-miscellaneous-expenses-incident-thereto-32490quot-vegetable-forcing-club-soot-on-cu0x7mbebs-can-you-tell-me-what-causes-club-root-on-cucumbers-is-there-any-pre-rentivet-h-h-club-foot-is-caused-by-a-fungus-which-develops-within-the-cells-of-the-roots-causing-them-to-become-distorted-and-often-to-die-after-the-plants-die-the-spores-become-mixed-with-the-soil-ready-to-fasten-on-some-other-host-plant-when-conditions-are-favorable-many-of-the-common-weeds-are-sub-ject-to-club-root-but-it-is-not-usu-RRTEWE.jpg ". Florists' review [microform]. Floriculture. 60 The Florists' Review July 80. 1914. miscellaneous expenses incident thereto, $32,490." Vegetable Forcing CLUB SOOT ON CU0X7MBEBS. Can you tell me what causes club root on cucumbers? Is there any pre- rentivet H. H. Club Foot is caused by a fungus which develops within the cells of the roots, causing them to become distorted and often to die. After the plants die the spores become mixed with the soil, ready to fasten on some other host plant when conditions are favorable. Many of the common weeds are sub- ject to club root, but it is not usu Stock Photo")
RMRRTEWE–. Florists' review [microform]. Floriculture. 60 The Florists' Review July 80. 1914. miscellaneous expenses incident thereto, $32,490." Vegetable Forcing CLUB SOOT ON CU0X7MBEBS. Can you tell me what causes club root on cucumbers? Is there any pre- rentivet H. H. Club Foot is caused by a fungus which develops within the cells of the roots, causing them to become distorted and often to die. After the plants die the spores become mixed with the soil, ready to fasten on some other host plant when conditions are favorable. Many of the common weeds are sub- ject to club root, but it is not usu
![. Botany of the living plant. Botany. EU-MYCETES.- (a) ASCOMYCETK^ which causes a disease on Rye-crops. The fungus attacks the ovaries of the Rye and other Grasses at the (lowering period, spreading over them and causing the condition known as " Honey-Dew." Tliis is the conichal stage, and it is spread from plant to plant i)y insects, which are attracted by a sugary secretion in which the conidia float (Fig. 369, a, b] also Fig. 341, p. 406). ISut the effect becomes more apparent as the crop ripens, for in place of the normal grains long curved bodies project from the ear (Fig. 369, Stock Photo](https://c8.alamy.com/comp/RH8E0P/botany-of-the-living-plant-botany-eu-mycetes-a-ascomycetk-which-causes-a-disease-on-rye-crops-the-fungus-attacks-the-ovaries-of-the-rye-and-other-grasses-at-the-lowering-period-spreading-over-them-and-causing-the-condition-known-as-quot-honey-dewquot-tliis-is-the-conichal-stage-and-it-is-spread-from-plant-to-plant-iy-insects-which-are-attracted-by-a-sugary-secretion-in-which-the-conidia-float-fig-369-a-b-also-fig-341-p-406-isut-the-effect-becomes-more-apparent-as-the-crop-ripens-for-in-place-of-the-normal-grains-long-curved-bodies-project-from-the-ear-fig-369-RH8E0P.jpg ". Botany of the living plant. Botany. EU-MYCETES.- (a) ASCOMYCETK^ which causes a disease on Rye-crops. The fungus attacks the ovaries of the Rye and other Grasses at the (lowering period, spreading over them and causing the condition known as " Honey-Dew." Tliis is the conichal stage, and it is spread from plant to plant i)y insects, which are attracted by a sugary secretion in which the conidia float (Fig. 369, a, b] also Fig. 341, p. 406). ISut the effect becomes more apparent as the crop ripens, for in place of the normal grains long curved bodies project from the ear (Fig. 369, Stock Photo")
RMRH8E0P–. Botany of the living plant. Botany. EU-MYCETES.- (a) ASCOMYCETK^ which causes a disease on Rye-crops. The fungus attacks the ovaries of the Rye and other Grasses at the (lowering period, spreading over them and causing the condition known as " Honey-Dew." Tliis is the conichal stage, and it is spread from plant to plant i)y insects, which are attracted by a sugary secretion in which the conidia float (Fig. 369, a, b] also Fig. 341, p. 406). ISut the effect becomes more apparent as the crop ripens, for in place of the normal grains long curved bodies project from the ear (Fig. 369,
RMRDFE05–. Manual of tree diseases . Trees. MAPLE DISEASES 227 In wet seasons defoliation may result. The illustrations show the effect of these diseases on the leaf (Figs. 37 and 38). Many of the other leaf-spots of maple appear similar to these, however, and no accurate determination can be made without a microscopic ex- amination of the fungus. The leaf-spot caused by Phyllo- sticta minima is characterized by light brown cir- cular spots with numerous black dot-like fruiting- bodies near the center (Fig. 37). The general char- acters of leaf- spots, and the life history of the fungi causing them, ar
RMRDJFDP–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 204 FUNGOUS DISEASES OF PLANTS. Fig. 77 b. Alfalfa defoliated by the Leaf Spot Fungus. (Photo- graph by H. H. Whetzel) Small sooty brown or black spots about -X- inch in diameter are 1 D produced, first evident on the upper surfaces of the leaves (Fig. 78). In these spots there appear later in the season the relatively simple, sessile apothecia, which are formed beneath the epidermis and break through at maturity. The spots are often very numer- ous, causing defoliation of many of
![. Better fruit. Fruit-culture. April 1922 BETTER FRUIT Page Twenty-three Spraying Roses TF BLACK spot appeared on the leaves of •'- your rose bushes last year, and the leave? dropped off before the cold weather, now is the time to begin treating them for this year. This disease of the rose bush is icnown as "black spot" and is caused by a fungus. Besides causing the leaves to drop too soon, it may cause the buds to begin opening again in the fall, with the result that the bloom for the following year is much lessened. Black spot grows on the leaves in the summer and then stays over i Stock Photo](https://c8.alamy.com/comp/RHTMKJ/better-fruit-fruit-culture-april-1922-better-fruit-page-twenty-three-spraying-roses-tf-black-spot-appeared-on-the-leaves-of-your-rose-bushes-last-year-and-the-leave-dropped-off-before-the-cold-weather-now-is-the-time-to-begin-treating-them-for-this-year-this-disease-of-the-rose-bush-is-icnown-as-quotblack-spotquot-and-is-caused-by-a-fungus-besides-causing-the-leaves-to-drop-too-soon-it-may-cause-the-buds-to-begin-opening-again-in-the-fall-with-the-result-that-the-bloom-for-the-following-year-is-much-lessened-black-spot-grows-on-the-leaves-in-the-summer-and-then-stays-over-i-RHTMKJ.jpg ". Better fruit. Fruit-culture. April 1922 BETTER FRUIT Page Twenty-three Spraying Roses TF BLACK spot appeared on the leaves of •'- your rose bushes last year, and the leave? dropped off before the cold weather, now is the time to begin treating them for this year. This disease of the rose bush is icnown as "black spot" and is caused by a fungus. Besides causing the leaves to drop too soon, it may cause the buds to begin opening again in the fall, with the result that the bloom for the following year is much lessened. Black spot grows on the leaves in the summer and then stays over i Stock Photo")
RMRHTMKJ–. Better fruit. Fruit-culture. April 1922 BETTER FRUIT Page Twenty-three Spraying Roses TF BLACK spot appeared on the leaves of •'- your rose bushes last year, and the leave? dropped off before the cold weather, now is the time to begin treating them for this year. This disease of the rose bush is icnown as "black spot" and is caused by a fungus. Besides causing the leaves to drop too soon, it may cause the buds to begin opening again in the fall, with the result that the bloom for the following year is much lessened. Black spot grows on the leaves in the summer and then stays over i
RMREM30N–. Circular. Agriculture; Agriculture -- United States. Fig. 2.—a -l-ycar-olcl white-piiie tree with chermes causing scaly bark. The chermes are still present, the white areas being their colonies. Fig. 3.—a 4-year-old white- pine tree with chermes causing scaly bark. The chermes have died out. At the left and below is the scar caused by some mechanical injury. for verification of his identification of the fungus. Further, the 1 Spaulding, Perley. The blister rust of white pine. U. S. Department of Agriculture, Bureau of Plant Industry, Bulletin 206, S8 pp., 5 figs., 2 pis., 1011. 2 Clinton, G.
![. British fungi. Fungi -- Great Britain; Botany -- Great Britain; Lichens. 54 BRITISH FUNGI Such fungi arc a source of great trouble to tlie gardener who selects damp, stuffy, hacWy lighted j^laces for his seed-beds, whereas when open well-ventilated localities are selected, the fungus is held in check. Many kinds of fungi that attack li-ing leaves, forming coloured patches or brownish spots, and causing the pre- mature fall of the leaf, are also short-lived. This, however, is not always the case. The large black patches resembling blotches of. " Smutted " oats, caused liy a fungus Stock Photo](https://c8.alamy.com/comp/RH1MHR/british-fungi-fungi-great-britain-botany-great-britain-lichens-54-british-fungi-such-fungi-arc-a-source-of-great-trouble-to-tlie-gardener-who-selects-damp-stuffy-hacwy-lighted-jlaces-for-his-seed-beds-whereas-when-open-well-ventilated-localities-are-selected-the-fungus-is-held-in-check-many-kinds-of-fungi-that-attack-li-ing-leaves-forming-coloured-patches-or-brownish-spots-and-causing-the-pre-mature-fall-of-the-leaf-are-also-short-lived-this-however-is-not-always-the-case-the-large-black-patches-resembling-blotches-of-quot-smutted-quot-oats-caused-liy-a-fungus-RH1MHR.jpg ". British fungi. Fungi -- Great Britain; Botany -- Great Britain; Lichens. 54 BRITISH FUNGI Such fungi arc a source of great trouble to tlie gardener who selects damp, stuffy, hacWy lighted j^laces for his seed-beds, whereas when open well-ventilated localities are selected, the fungus is held in check. Many kinds of fungi that attack li-ing leaves, forming coloured patches or brownish spots, and causing the pre- mature fall of the leaf, are also short-lived. This, however, is not always the case. The large black patches resembling blotches of. " Smutted " oats, caused liy a fungus Stock Photo")
RMRH1MHR–. British fungi. Fungi -- Great Britain; Botany -- Great Britain; Lichens. 54 BRITISH FUNGI Such fungi arc a source of great trouble to tlie gardener who selects damp, stuffy, hacWy lighted j^laces for his seed-beds, whereas when open well-ventilated localities are selected, the fungus is held in check. Many kinds of fungi that attack li-ing leaves, forming coloured patches or brownish spots, and causing the pre- mature fall of the leaf, are also short-lived. This, however, is not always the case. The large black patches resembling blotches of. " Smutted " oats, caused liy a fungus
RMRH8XGN–. Botany for high schools. Botany. Fig. 227. Fertilized egg sur- rounded by the envelop- ing threads which grow up around it. Figs. 225-227. — Fertilization in Sphaerotheca; one of the powdery mildews. (After Harper.) 437. The black fungi (Sphaeriales).—The black fungi include a vast number of the sac fungi, with many genera and species. The fruit bodies (perithecia) are black or dark brown; they occur singly, in troops or in masses, and sometimes are imbedded in a black stroma (a compact sterile fungus tissue). Many are saprophytes and many others are parasites on other plants, causing leaf s
RMRHTKDB–. Better fruit. Fruit-culture. March, 1921 BETTER FRUIT Small Fruit Diseases and Their Control By H. P. Barss, Plant Pathologist, Oregon Experiment Station LOGANBERRY Anthracnose: Small spots with light centers and dark margins on canes and leaves. May at- tack fruit, causing discoloration and shrivelling of drupelets of berry. Dry- ing up of fruit due to dry weather or lack of soil moisture, or root-cutting or borers may be mistaken for anthrac- nose effect. Caused by a fungus. Spread by spores produced in spots on canes and leaves. Favored by damp weather. Carried over on dead leaves and old
RMRH0W8K–. Bulletin. Agriculture. Fig. 9.—A section corky cells beneath. Fig. 10. A pycnidium of Phoma Pomi. The escaping spores may be seen above. thru a Fruit Spot. The the epidermis are shown above, while below are seen the brown and with- ered cells produced :n the later development of the spot. The fungus can be seen in the pocket in the center. colored. (Frontis- piece.) Numerous black specks ap- pear, sometimes causing the center of the spot to have an almost uniformly black appearance (Fig. 8). The tissue beneath the spot is rendered brown and corky to a depth of several cells (Fig. 9). Cold st
![. Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 67 Melilotas officinalis. F. Bjernemose; Falst. Korselitse. Trifolium procumbens. S. Tisvilde Hegn. Trifolium minus. J. Skive!. Trifolium repens. Common f. inst. Skaarup '"'/s 70. Trifolium hybridum f. inst. 0rsl0v (P. N.). Trifolium arvense. F. Ulkendal; S. Rervig, Tisvilde Havstok. Trifolium striatum. J; Skive!, Fredericia Void (Jak. Lge). Trifolium incarnatum. S. 0rsl0v (P. N.). Trifolium pratense common (Rostrup has found the attack of the fungus often causing the affected plants to form several quartered or quinque Stock Photo](https://c8.alamy.com/comp/RE395B/danish-fungi-as-represented-in-the-herbarium-of-e-rostrup-fungi-67-melilotas-officinalis-f-bjernemose-falst-korselitse-trifolium-procumbens-s-tisvilde-hegn-trifolium-minus-j-skive!-trifolium-repens-common-f-inst-skaarup-quots-70-trifolium-hybridum-f-inst-0rsl0v-p-n-trifolium-arvense-f-ulkendal-s-rervig-tisvilde-havstok-trifolium-striatum-j-skive!-fredericia-void-jak-lge-trifolium-incarnatum-s-0rsl0v-p-n-trifolium-pratense-common-rostrup-has-found-the-attack-of-the-fungus-often-causing-the-affected-plants-to-form-several-quartered-or-quinque-RE395B.jpg ". Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 67 Melilotas officinalis. F. Bjernemose; Falst. Korselitse. Trifolium procumbens. S. Tisvilde Hegn. Trifolium minus. J. Skive!. Trifolium repens. Common f. inst. Skaarup '"'/s 70. Trifolium hybridum f. inst. 0rsl0v (P. N.). Trifolium arvense. F. Ulkendal; S. Rervig, Tisvilde Havstok. Trifolium striatum. J; Skive!, Fredericia Void (Jak. Lge). Trifolium incarnatum. S. 0rsl0v (P. N.). Trifolium pratense common (Rostrup has found the attack of the fungus often causing the affected plants to form several quartered or quinque Stock Photo")
RMRE395B–. Danish fungi as represented in the herbarium of E. Rostrup;. Fungi. 67 Melilotas officinalis. F. Bjernemose; Falst. Korselitse. Trifolium procumbens. S. Tisvilde Hegn. Trifolium minus. J. Skive!. Trifolium repens. Common f. inst. Skaarup '"'/s 70. Trifolium hybridum f. inst. 0rsl0v (P. N.). Trifolium arvense. F. Ulkendal; S. Rervig, Tisvilde Havstok. Trifolium striatum. J; Skive!, Fredericia Void (Jak. Lge). Trifolium incarnatum. S. 0rsl0v (P. N.). Trifolium pratense common (Rostrup has found the attack of the fungus often causing the affected plants to form several quartered or quinque
![. Canadian forest industries 1894-1896. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. Fig. 6.—" Shelf" fungus on the stem ofapine. (Hartig.) a, sound wood; b, resinous " light" wood ; c, partly decayed wood or punk ; d, layer of living spore tubes ; e, old filled up spore tubes ; f, fluted upper surface of the fruiting body of the fungus, which gets its food through a great number of fine threads (the myceli- um), its vegetative tissue penetrating the wood and causing its decay. Illinois which have lain buried 60 or more feet d Stock Photo](https://c8.alamy.com/comp/RG0MTG/canadian-forest-industries-1894-1896-lumbering-forests-and-forestry-forest-products-wood-pulp-industry-wood-using-industries-fig-6quot-shelfquot-fungus-on-the-stem-ofapine-hartig-a-sound-wood-b-resinous-quot-lightquot-wood-c-partly-decayed-wood-or-punk-d-layer-of-living-spore-tubes-e-old-filled-up-spore-tubes-f-fluted-upper-surface-of-the-fruiting-body-of-the-fungus-which-gets-its-food-through-a-great-number-of-fine-threads-the-myceli-um-its-vegetative-tissue-penetrating-the-wood-and-causing-its-decay-illinois-which-have-lain-buried-60-or-more-feet-d-RG0MTG.jpg ". Canadian forest industries 1894-1896. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. Fig. 6.—" Shelf" fungus on the stem ofapine. (Hartig.) a, sound wood; b, resinous " light" wood ; c, partly decayed wood or punk ; d, layer of living spore tubes ; e, old filled up spore tubes ; f, fluted upper surface of the fruiting body of the fungus, which gets its food through a great number of fine threads (the myceli- um), its vegetative tissue penetrating the wood and causing its decay. Illinois which have lain buried 60 or more feet d Stock Photo")
RMRG0MTG–. Canadian forest industries 1894-1896. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. Fig. 6.—" Shelf" fungus on the stem ofapine. (Hartig.) a, sound wood; b, resinous " light" wood ; c, partly decayed wood or punk ; d, layer of living spore tubes ; e, old filled up spore tubes ; f, fluted upper surface of the fruiting body of the fungus, which gets its food through a great number of fine threads (the myceli- um), its vegetative tissue penetrating the wood and causing its decay. Illinois which have lain buried 60 or more feet d
 of the heads in shipment. It is caused either by Sey- toria apii or by a closely related fungus, S. apii-graveolentis. T Stock Photo")
RMRCCK8K–. Diseases of truck crops / Ralph E. Smith. Plant diseases; Plant parasites; Vegetables; Agricultural pests. 30 California Agricultural Extension Service [CiR. 119 Blight, Late Blight.^—In this disease, the leaves and stems are blighted and have dead areas dotted with small, black, spore pustules (fig. 15). This disease, if not controlled, causes much loss to celery in California, both by stunting the growth of the plants in the field and by causing slimy rot (''slime") of the heads in shipment. It is caused either by Sey- toria apii or by a closely related fungus, S. apii-graveolentis. T
RMRCDPB6–. Diseases of economic plants. Plant diseases. kj; Fig. 186. — Dry rot fungus (Merulius lacrymans) ; on the right the mycelium is visible as white strings. After Freeman. 4,000,000,000, necessitating an annual replacement of some 500,000,000 in the United States, indicates the enor- mous money values involved. This kind of decay is brought about by agencies similar, sometimes identical, with those causing rot in living trees,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrat
RMRCC6B1–. Diseases of economic plants. Plant diseases. Fi(i. 180. — Drj rut fungus (Merulius lacrymans) ; on the right the mycelium is visible as white strings. After Freeman. 4,000,000,000, necessitating an annual replacement of some 500,000,000 in the United States, indicates the enor- mous money values involved. This kind of decay is brought about by agencies similar, sometimes identical, with those causing rot in living trees,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustration
![. Diseases of economic plants. Plant diseases. TREES AND TIMBER 439 vated perithecia, the cluster surrounded by a border of dead tissue. Premature defoliation results. The disease is very abundant in all parts of the United States. In- fected materials should be burned in the fall. Powdery mildew, uncinulose. See oak. Powdery mildew, phyliactinose. See oak, FILBERT. See hazel. FIR Rust (Aecidium elatinum All). & Schw.). — This cluster-cup fungus has been noted in Minnesota."^ It produces bushy distortions, 'Svitches' brooms," by causing profuse branch- ing of the affected part of Stock Photo](https://c8.alamy.com/comp/RCC6AE/diseases-of-economic-plants-plant-diseases-trees-and-timber-439-vated-perithecia-the-cluster-surrounded-by-a-border-of-dead-tissue-premature-defoliation-results-the-disease-is-very-abundant-in-all-parts-of-the-united-states-in-fected-materials-should-be-burned-in-the-fall-powdery-mildew-uncinulose-see-oak-powdery-mildew-phyliactinose-see-oak-filbert-see-hazel-fir-rust-aecidium-elatinum-all-amp-schw-this-cluster-cup-fungus-has-been-noted-in-minnesotaquot-it-produces-bushy-distortions-svitches-broomsquot-by-causing-profuse-branch-ing-of-the-affected-part-of-RCC6AE.jpg ". Diseases of economic plants. Plant diseases. TREES AND TIMBER 439 vated perithecia, the cluster surrounded by a border of dead tissue. Premature defoliation results. The disease is very abundant in all parts of the United States. In- fected materials should be burned in the fall. Powdery mildew, uncinulose. See oak. Powdery mildew, phyliactinose. See oak, FILBERT. See hazel. FIR Rust (Aecidium elatinum All). & Schw.). — This cluster-cup fungus has been noted in Minnesota."^ It produces bushy distortions, 'Svitches' brooms," by causing profuse branch- ing of the affected part of Stock Photo")
RMRCC6AE–. Diseases of economic plants. Plant diseases. TREES AND TIMBER 439 vated perithecia, the cluster surrounded by a border of dead tissue. Premature defoliation results. The disease is very abundant in all parts of the United States. In- fected materials should be burned in the fall. Powdery mildew, uncinulose. See oak. Powdery mildew, phyliactinose. See oak, FILBERT. See hazel. FIR Rust (Aecidium elatinum All). & Schw.). — This cluster-cup fungus has been noted in Minnesota."^ It produces bushy distortions, 'Svitches' brooms," by causing profuse branch- ing of the affected part of
![. Diseases of economic plants. Plant diseases. TREES AND TIMBER 439 vated perithecia, the cluster surrounded by a border of dead tissue. Premature defoliation results. The disease is very abundant in all parts of the United States. In- fected materials should be burned in the fall. Powdery mildew, uncinulose. See oak. Powdery mildew, phyllactinose. See oak. FILBERT. See hazel. FIR Rust (Aecidium elatinum Alb. & Schw.). — This cluster-cup fungus has been noted in Minnesota.1 It produces bushy distortions, "witches' brooms," by causing profuse branch- ing of the affected part of th Stock Photo](https://c8.alamy.com/comp/RCDPAN/diseases-of-economic-plants-plant-diseases-trees-and-timber-439-vated-perithecia-the-cluster-surrounded-by-a-border-of-dead-tissue-premature-defoliation-results-the-disease-is-very-abundant-in-all-parts-of-the-united-states-in-fected-materials-should-be-burned-in-the-fall-powdery-mildew-uncinulose-see-oak-powdery-mildew-phyllactinose-see-oak-filbert-see-hazel-fir-rust-aecidium-elatinum-alb-amp-schw-this-cluster-cup-fungus-has-been-noted-in-minnesota1-it-produces-bushy-distortions-quotwitches-broomsquot-by-causing-profuse-branch-ing-of-the-affected-part-of-th-RCDPAN.jpg ". Diseases of economic plants. Plant diseases. TREES AND TIMBER 439 vated perithecia, the cluster surrounded by a border of dead tissue. Premature defoliation results. The disease is very abundant in all parts of the United States. In- fected materials should be burned in the fall. Powdery mildew, uncinulose. See oak. Powdery mildew, phyllactinose. See oak. FILBERT. See hazel. FIR Rust (Aecidium elatinum Alb. & Schw.). — This cluster-cup fungus has been noted in Minnesota.1 It produces bushy distortions, "witches' brooms," by causing profuse branch- ing of the affected part of th Stock Photo")
RMRCDPAN–. Diseases of economic plants. Plant diseases. TREES AND TIMBER 439 vated perithecia, the cluster surrounded by a border of dead tissue. Premature defoliation results. The disease is very abundant in all parts of the United States. In- fected materials should be burned in the fall. Powdery mildew, uncinulose. See oak. Powdery mildew, phyllactinose. See oak. FILBERT. See hazel. FIR Rust (Aecidium elatinum Alb. & Schw.). — This cluster-cup fungus has been noted in Minnesota.1 It produces bushy distortions, "witches' brooms," by causing profuse branch- ing of the affected part of th
![. Diseases of deciduous forest trees. Trees -- Diseases and pests. SAP-ROTS OF SPECIES OF DECIDUOUS TREES. 59 results in their gradual destruction, ultimately causing the death of the entire tree. The injury to the wood is only local, occurring gen- erally near the base of the trunk. The fungus is said to enter the trunk through injuries near the ground line or through wounds on the roots, and "spreads upward through the entire wood, reachilig, in specimens observed, the height of 10 feet. The entire wood »,;' the lower portion of the trunk becomes thoroughly infected before the fungus o Stock Photo](https://c8.alamy.com/comp/RCE2A7/diseases-of-deciduous-forest-trees-trees-diseases-and-pests-sap-rots-of-species-of-deciduous-trees-59-results-in-their-gradual-destruction-ultimately-causing-the-death-of-the-entire-tree-the-injury-to-the-wood-is-only-local-occurring-gen-erally-near-the-base-of-the-trunk-the-fungus-is-said-to-enter-the-trunk-through-injuries-near-the-ground-line-or-through-wounds-on-the-roots-and-quotspreads-upward-through-the-entire-wood-reachilig-in-specimens-observed-the-height-of-10-feet-the-entire-wood-the-lower-portion-of-the-trunk-becomes-thoroughly-infected-before-the-fungus-o-RCE2A7.jpg ". Diseases of deciduous forest trees. Trees -- Diseases and pests. SAP-ROTS OF SPECIES OF DECIDUOUS TREES. 59 results in their gradual destruction, ultimately causing the death of the entire tree. The injury to the wood is only local, occurring gen- erally near the base of the trunk. The fungus is said to enter the trunk through injuries near the ground line or through wounds on the roots, and "spreads upward through the entire wood, reachilig, in specimens observed, the height of 10 feet. The entire wood »,;' the lower portion of the trunk becomes thoroughly infected before the fungus o Stock Photo")
RMRCE2A7–. Diseases of deciduous forest trees. Trees -- Diseases and pests. SAP-ROTS OF SPECIES OF DECIDUOUS TREES. 59 results in their gradual destruction, ultimately causing the death of the entire tree. The injury to the wood is only local, occurring gen- erally near the base of the trunk. The fungus is said to enter the trunk through injuries near the ground line or through wounds on the roots, and "spreads upward through the entire wood, reachilig, in specimens observed, the height of 10 feet. The entire wood »,;' the lower portion of the trunk becomes thoroughly infected before the fungus o
RMRCD90T–. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. 3i6 DISEASES OF CROP-PLANTS Cytospora Rot. The fungus Cytospora Sacchari Butl., originally described from sugar-cane in India, has been found by J. R. Johnston on certain susceptible Barbados seedlings in Porto Rico, causing an affection of young shoots very similar in its nature and effects to the Hawaiian Iliau disease, but producing also nodal infections on older canes. The fungus occurs in Barbados, but is not known to be injurious. The leaf-sheaths of young shoots are firmly bound together by the mycelium :
![. Diseases of deciduous forest trees. Trees -- Diseases and pests. SAP-ROTS OF SPECIES OF DECIDUOUS TREES. 59 results in their gradual destruction, ultimately causing the death of the entire tree. The injury to the wood is only local, occurring gen- erally near the base of the trunk. The fiuigus is said to enter the trunk through injuries near the ground line or through wounds on the roots, and "spreads upward through the entire wood, reaching, in specimens observed, the height of 10 feet. The entire wood of the lower portion of the trunk becomes thoroughly infected before the fungus obta Stock Photo](https://c8.alamy.com/comp/RCDR38/diseases-of-deciduous-forest-trees-trees-diseases-and-pests-sap-rots-of-species-of-deciduous-trees-59-results-in-their-gradual-destruction-ultimately-causing-the-death-of-the-entire-tree-the-injury-to-the-wood-is-only-local-occurring-gen-erally-near-the-base-of-the-trunk-the-fiuigus-is-said-to-enter-the-trunk-through-injuries-near-the-ground-line-or-through-wounds-on-the-roots-and-quotspreads-upward-through-the-entire-wood-reaching-in-specimens-observed-the-height-of-10-feet-the-entire-wood-of-the-lower-portion-of-the-trunk-becomes-thoroughly-infected-before-the-fungus-obta-RCDR38.jpg ". Diseases of deciduous forest trees. Trees -- Diseases and pests. SAP-ROTS OF SPECIES OF DECIDUOUS TREES. 59 results in their gradual destruction, ultimately causing the death of the entire tree. The injury to the wood is only local, occurring gen- erally near the base of the trunk. The fiuigus is said to enter the trunk through injuries near the ground line or through wounds on the roots, and "spreads upward through the entire wood, reaching, in specimens observed, the height of 10 feet. The entire wood of the lower portion of the trunk becomes thoroughly infected before the fungus obta Stock Photo")
RMRCDR38–. Diseases of deciduous forest trees. Trees -- Diseases and pests. SAP-ROTS OF SPECIES OF DECIDUOUS TREES. 59 results in their gradual destruction, ultimately causing the death of the entire tree. The injury to the wood is only local, occurring gen- erally near the base of the trunk. The fiuigus is said to enter the trunk through injuries near the ground line or through wounds on the roots, and "spreads upward through the entire wood, reaching, in specimens observed, the height of 10 feet. The entire wood of the lower portion of the trunk becomes thoroughly infected before the fungus obta
![. Diseases of deciduous forest trees. Trees. SAP-ROTS OF SPECIES OF DECIDUOUS TREES. 59 results iii their gradual destruction, ultimately causing the death of the entire tree. The injury to the wood is only local, occurring gen- erally near the base of the trunk. The fungus is said to enter the trunk through injuries near the ground line or through wounds on the roots, and "spreads upward through the entire wood, reaching, in specimens observed, the height of 10 feet. The entire wood of the lower portion of the trunk becomes thoroughly infected before the fungus obtains sufficient vigor t Stock Photo](https://c8.alamy.com/comp/RCE2A8/diseases-of-deciduous-forest-trees-trees-sap-rots-of-species-of-deciduous-trees-59-results-iii-their-gradual-destruction-ultimately-causing-the-death-of-the-entire-tree-the-injury-to-the-wood-is-only-local-occurring-gen-erally-near-the-base-of-the-trunk-the-fungus-is-said-to-enter-the-trunk-through-injuries-near-the-ground-line-or-through-wounds-on-the-roots-and-quotspreads-upward-through-the-entire-wood-reaching-in-specimens-observed-the-height-of-10-feet-the-entire-wood-of-the-lower-portion-of-the-trunk-becomes-thoroughly-infected-before-the-fungus-obtains-sufficient-vigor-t-RCE2A8.jpg ". Diseases of deciduous forest trees. Trees. SAP-ROTS OF SPECIES OF DECIDUOUS TREES. 59 results iii their gradual destruction, ultimately causing the death of the entire tree. The injury to the wood is only local, occurring gen- erally near the base of the trunk. The fungus is said to enter the trunk through injuries near the ground line or through wounds on the roots, and "spreads upward through the entire wood, reaching, in specimens observed, the height of 10 feet. The entire wood of the lower portion of the trunk becomes thoroughly infected before the fungus obtains sufficient vigor t Stock Photo")
RMRCE2A8–. Diseases of deciduous forest trees. Trees. SAP-ROTS OF SPECIES OF DECIDUOUS TREES. 59 results iii their gradual destruction, ultimately causing the death of the entire tree. The injury to the wood is only local, occurring gen- erally near the base of the trunk. The fungus is said to enter the trunk through injuries near the ground line or through wounds on the roots, and "spreads upward through the entire wood, reaching, in specimens observed, the height of 10 feet. The entire wood of the lower portion of the trunk becomes thoroughly infected before the fungus obtains sufficient vigor t
RMRCDPRJ–. Diseases of economic plants. Plant diseases. 90 DISEASES OF ECONOMIC PLANTS. Fig. 35. — Hypochnose, showing sclerotia on twig at left and rhizomorphic strands on twig at right. Original, gether with the sclerotia and extending along the twig longitudinally are also found silvery, glis- tening, thread-like, fun- gous growths. This fungus hibernates in the sclerotia on or near the terminal bud and thence invades the new twigs as they develop, reaching out upon each leaf, spreading over its under surface in almost invisible thinness, and causing it to droop, die, and eventually to fall away. Th
RMRCC3D5–. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 408 UREDINEAE. cone rust. This disease is found on the cones of spruce. The aecidia are brown somewhat flattened spheres, and appear in large numbers on cones distinguished by their scales standing stiffly open even in damp weather (Fig. 243). The germ- tubes of the fungus find entrance in spring into the flowers or young spruce-cones, and the mycelium lives parasitic in the green scales without causing any marked cha
RMRCD96E–. Diseases of cultivated plants and trees. Plant diseases; Plants -- Wounds and injuries; Plants, Protection of; Trees -- Diseases and pests. 196 DISEASES OF CULTIVATED PLANTS the leaf-stalks. Its presence is indicated by the white patches bordered with orange-red. The fungus passes from the leaf- stalks into the root, penetrating to the heart, causing a rot. The conidial fruit first appears on the leaf-stalks, followed by the ascigerous form when the leaves are quite dead. Ascigerous form. Perithecia rounded, brown, asci oblong- clavate, 8-spored; spores hyaline, i-septate, upper cell ovate-
RMRCC6NN–. Diseases of economic plants. Plant diseases. 90 BIS EASES OF ECONOMIC PLANTS. Fig. 35. â Hypochnose, showing sclerotia on twig at left and rhizomorphic strands on twig at right. Original. gether with the sclerotia and extencUng along the twig longitudinally are also found silvery, glis- tening, thread-like, fun- gous growths. This fungus hibernates in the sclerotia on or near the terminal bud and thence invades the new twigs as â they develop, reaching out upon each leaf, spreading over its under surface in almost invisible thinness, and causing it to droop, die, and eventually to fall away.
RMRCDB4K–. Diseases and decays of Connecticut tobacco. Tobacco. Figure 2. Some fungi that cause tobacco diseeises, all greatly magnified. A-E, the mildew fungus Peronospora tahacina. A, Sporophore with developing summer spores at tips. B, Mature summer spores. C, Germination of the summer spores. D, Cross- section of a winter spore. E, Haustorium inside a leaf cell and a segment of mycelium between the leaf cells. F, Spores of the fungus Aliernaria tenuis, causing brown-spot and freckle rot. G, Mycelium of the same fungus. H, Sporophore and heads of the spores of one of the pole rot fungi, Botrytis cin
![. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 408 UREDINEAE. cono ru.st. This disease is I'ouud. on Llie cones oi' spruce. The aecidia are brown somewhat flattened spheres, and appear in lari^c ininibers on cones distinguished by their scales standing stiMly o})en even in damp weather (Fig. 243). The germ- tubes of the fungus find entrance in spring into the flowers or young spruce-cones, and the mycelium lives ]»arasitic in the green scales without causing any m Stock Photo](https://c8.alamy.com/comp/RCC3NN/diseases-of-plants-induced-by-cryptogamic-parasites-introduction-to-the-study-of-pathogenic-fungi-slime-fungi-bacteria-amp-algae-plant-diseases-parasitic-plants-fungi-408-uredineae-cono-rust-this-disease-is-iouud-on-llie-cones-oi-spruce-the-aecidia-are-brown-somewhat-flattened-spheres-and-appear-in-laric-ininibers-on-cones-distinguished-by-their-scales-standing-stimly-oen-even-in-damp-weather-fig-243-the-germ-tubes-of-the-fungus-find-entrance-in-spring-into-the-flowers-or-young-spruce-cones-and-the-mycelium-lives-arasitic-in-the-green-scales-without-causing-any-m-RCC3NN.jpg ". Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 408 UREDINEAE. cono ru.st. This disease is I'ouud. on Llie cones oi' spruce. The aecidia are brown somewhat flattened spheres, and appear in lari^c ininibers on cones distinguished by their scales standing stiMly o})en even in damp weather (Fig. 243). The germ- tubes of the fungus find entrance in spring into the flowers or young spruce-cones, and the mycelium lives ]»arasitic in the green scales without causing any m Stock Photo")
RMRCC3NN–. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 408 UREDINEAE. cono ru.st. This disease is I'ouud. on Llie cones oi' spruce. The aecidia are brown somewhat flattened spheres, and appear in lari^c ininibers on cones distinguished by their scales standing stiMly o})en even in damp weather (Fig. 243). The germ- tubes of the fungus find entrance in spring into the flowers or young spruce-cones, and the mycelium lives ]»arasitic in the green scales without causing any m
RMRCC6BR–. Diseases of economic plants. Plant diseases. Cereals 319 injury to the quality of the grain and diminution in quan- tity. Selby has shown that seedHngs in the field are often killed by this disease, which is carried over in the seed. In this way as high as 5.9 per cent of death in seedlings has been caused. It has recently been shown that the fungus that causes wheat scab grows also on corn causing root-rot, and winters. b a Fig. 167. — Wheat kernels: a, normal; b, shrunken and killed by scab. After Manns. on corn refuse. Wheat planted in fields that bore infected corn becomes badly diseased
RMRCC6MH–. Diseases of economic plants. Plant diseases. 84 Diseases of Economic Plants Self-boiled lime-sulfur, 8-8-50, applied as indicated for peach brown-rot, gives excellent results. -Curl 9^ (Taphrina deformans (Fcl.) Tul.).* — Throughout the peach-producing region this disease abounds, being par- ticularly injurious in moist localities. The annual loss approximates $3,000,000 in the United States. Curl is due to a fungus which grows in the leaves, causing the peculiar malformation which justly gives rise to its. Fig. 43. — Peach leaf-cui tkinson. popular name. This fungus destroys the utility of
RMRCDPE8–. Diseases of economic plants. Plant diseases. Cereals 319 injury to the quality of the grain and diminution in quan- tity. Selby has shown that seedlings in the field are often killed by this disease, which is carried over in the seed. In this way as high as 5.9 per cent of death in seedlings has been caused. It has recently been shown that the fungus that causes wheat scab grows also on corn causing root-rot, and winters. b a Fig. 167. — Wheat kernels: a, normal; h, shrunken and killed by- scab. After Manns. on corn refuse. Wheat planted in fields that bore infected corn becomes badly diseas
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