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RM2AWM6WP–Annual report of the Quebec Society for the Protection of Plants from Insects and Fungous Diseases . The Hud-moth—Stages and Parasites (original). 1. Full grown larva. 2. Newly hatchedlarva. 3. Pupa-ventral side. 4. Pupa-dorsal side. 5. Full grown moth and baseof the male antenna. 6. Moth with wings folded. 7. Pentarthou minutum, anegg parasite. 8. Pimpla conquisitor, a pupal parasite. 9. Bassiis earinoiies, femaleinsect, and abdomens of male and female. REPORT OF THE SOCIETY , 123 higher. In Nova Scotia Sanders records injury to 59.56 per cent of theblossoms, and in unsprayed orchards in Queb
![. Minnesota plant diseases. Plant diseases. 68 Minnesota Plant Diseases. body of an insect there is considerable chance for aeration on account of- the large number of air-tubes which traverse the insect body. This very probably accounts very largely for the popularity of the insects as fungus hosts. Of these fungi the insect molds are very abundant as is also the "burnt wood" fungus known as the caterpillar fungus, and these two groups of fungi are responsible for most of the disease epidemics of insects. Plant lice have been known to sufifer from attacks of both of these fungi. The Stock Photo](https://c8.alamy.com/comp/PG45CM/minnesota-plant-diseases-plant-diseases-68-minnesota-plant-diseases-body-of-an-insect-there-is-considerable-chance-for-aeration-on-account-of-the-large-number-of-air-tubes-which-traverse-the-insect-body-this-very-probably-accounts-very-largely-for-the-popularity-of-the-insects-as-fungus-hosts-of-these-fungi-the-insect-molds-are-very-abundant-as-is-also-the-quotburnt-woodquot-fungus-known-as-the-caterpillar-fungus-and-these-two-groups-of-fungi-are-responsible-for-most-of-the-disease-epidemics-of-insects-plant-lice-have-been-known-to-sufifer-from-attacks-of-both-of-these-fungi-the-PG45CM.jpg ". Minnesota plant diseases. Plant diseases. 68 Minnesota Plant Diseases. body of an insect there is considerable chance for aeration on account of- the large number of air-tubes which traverse the insect body. This very probably accounts very largely for the popularity of the insects as fungus hosts. Of these fungi the insect molds are very abundant as is also the "burnt wood" fungus known as the caterpillar fungus, and these two groups of fungi are responsible for most of the disease epidemics of insects. Plant lice have been known to sufifer from attacks of both of these fungi. The Stock Photo")
RMPG45CM–. Minnesota plant diseases. Plant diseases. 68 Minnesota Plant Diseases. body of an insect there is considerable chance for aeration on account of- the large number of air-tubes which traverse the insect body. This very probably accounts very largely for the popularity of the insects as fungus hosts. Of these fungi the insect molds are very abundant as is also the "burnt wood" fungus known as the caterpillar fungus, and these two groups of fungi are responsible for most of the disease epidemics of insects. Plant lice have been known to sufifer from attacks of both of these fungi. The
RMMCNKF3–. strands of a Marasmius, which is no longer regarded as more than saprophytic in habit. The Fungi infecting Bug Punctures [Stigmatomycosis). A type of disease not previously recognised has in recent
RM2AWMA16–Annual report of the Quebec Society for the Protection of Plants from Insects and Fungous Diseases .
RMPG4EK2–. Minnesota plant diseases. Plant diseases. 362 Minnesota Plant Diseases. palisade fashion on the surface of the pocket. Each sac contains about eight spores, which on germination may directly cause in- fection of a host plant. The fungus of this disease is very closely related to the peach leaf-curl fungus and to others forming witches'-broom on birch, alder and cherry trees. It is a sac- fungus with an arrangement of sacs similar to that in the true cup fungi, but has no true cup, since the sacs occur directly on the tissues of the host.. Fig. 193.—Plum pockets. These plums are devoid of sto
![. Minnesota plant diseases. Plant diseases. ;74 Minnesota Plant Diseases. occurs on other more or less closely related plants. The fungus mycelium gains entrance to the plant in the spring and first pro- duces cluster cups. These are followed by the summer spores, throughout the summer months, forming small red-brown patches. ]"lG. 199.—Leaf rust of roses. The cluster-cup stage on the stems and leaves. On left is a stem distorted by the cluster-cup cushions. Photograph by H. Cuzner upon large, dark, red-brown spots in great abundance, on the lower surface of the leaves. The summer-spores Stock Photo](https://c8.alamy.com/comp/RDEW29/minnesota-plant-diseases-plant-diseases-74-minnesota-plant-diseases-occurs-on-other-more-or-less-closely-related-plants-the-fungus-mycelium-gains-entrance-to-the-plant-in-the-spring-and-first-pro-duces-cluster-cups-these-are-followed-by-the-summer-spores-throughout-the-summer-months-forming-small-red-brown-patches-quotlg-199leaf-rust-of-roses-the-cluster-cup-stage-on-the-stems-and-leaves-on-left-is-a-stem-distorted-by-the-cluster-cup-cushions-photograph-by-h-cuzner-upon-large-dark-red-brown-spots-in-great-abundance-on-the-lower-surface-of-the-leaves-the-summer-spores-RDEW29.jpg ". Minnesota plant diseases. Plant diseases. ;74 Minnesota Plant Diseases. occurs on other more or less closely related plants. The fungus mycelium gains entrance to the plant in the spring and first pro- duces cluster cups. These are followed by the summer spores, throughout the summer months, forming small red-brown patches. ]"lG. 199.—Leaf rust of roses. The cluster-cup stage on the stems and leaves. On left is a stem distorted by the cluster-cup cushions. Photograph by H. Cuzner upon large, dark, red-brown spots in great abundance, on the lower surface of the leaves. The summer-spores Stock Photo")
RMRDEW29–. Minnesota plant diseases. Plant diseases. ;74 Minnesota Plant Diseases. occurs on other more or less closely related plants. The fungus mycelium gains entrance to the plant in the spring and first pro- duces cluster cups. These are followed by the summer spores, throughout the summer months, forming small red-brown patches. ]"lG. 199.—Leaf rust of roses. The cluster-cup stage on the stems and leaves. On left is a stem distorted by the cluster-cup cushions. Photograph by H. Cuzner upon large, dark, red-brown spots in great abundance, on the lower surface of the leaves. The summer-spores
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 57 though some weak points in the plant organization may be re- sponsible for the successful attack of the parasite, as has been experimentally proven within the last year. In other words, the most successful parasitic fungi are those which can stimulate the affected parts of host plants to extraordinary effort, or at least do not immediately injure those parts.. Fig. 26.—"Birds-nest" witches'-broom on red cedar caused by the birds-nest rust fungus (Gymnosporangium nidus-avis). The bush-like broom stands vertical o Stock Photo](https://c8.alamy.com/comp/PG45D0/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-57-though-some-weak-points-in-the-plant-organization-may-be-re-sponsible-for-the-successful-attack-of-the-parasite-as-has-been-experimentally-proven-within-the-last-year-in-other-words-the-most-successful-parasitic-fungi-are-those-which-can-stimulate-the-affected-parts-of-host-plants-to-extraordinary-effort-or-at-least-do-not-immediately-injure-those-parts-fig-26quotbirds-nestquot-witches-broom-on-red-cedar-caused-by-the-birds-nest-rust-fungus-gymnosporangium-nidus-avis-the-bush-like-broom-stands-vertical-o-PG45D0.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 57 though some weak points in the plant organization may be re- sponsible for the successful attack of the parasite, as has been experimentally proven within the last year. In other words, the most successful parasitic fungi are those which can stimulate the affected parts of host plants to extraordinary effort, or at least do not immediately injure those parts.. Fig. 26.—"Birds-nest" witches'-broom on red cedar caused by the birds-nest rust fungus (Gymnosporangium nidus-avis). The bush-like broom stands vertical o Stock Photo")
RMPG45D0–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 57 though some weak points in the plant organization may be re- sponsible for the successful attack of the parasite, as has been experimentally proven within the last year. In other words, the most successful parasitic fungi are those which can stimulate the affected parts of host plants to extraordinary effort, or at least do not immediately injure those parts.. Fig. 26.—"Birds-nest" witches'-broom on red cedar caused by the birds-nest rust fungus (Gymnosporangium nidus-avis). The bush-like broom stands vertical o
RMME84EX–. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . â e
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. ii3 long spindle-shaped, consisting of a string of cells. Thick- walled spores are also produced, consisting of several cells, and are capable of resting over in the soil for some time before ger- minating. The chief method of distribution of the fungus is by means of the spores which cling to the seeds of the flax. Flax seed should therefore be treated before seeding to de- stroy the fungus spores clinging to the coats. Professor BoUey has recommended the following treatment and preventive measures: "Use formaldehyde a Stock Photo](https://c8.alamy.com/comp/RDE3AE/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-ii3-long-spindle-shaped-consisting-of-a-string-of-cells-thick-walled-spores-are-also-produced-consisting-of-several-cells-and-are-capable-of-resting-over-in-the-soil-for-some-time-before-ger-minating-the-chief-method-of-distribution-of-the-fungus-is-by-means-of-the-spores-which-cling-to-the-seeds-of-the-flax-flax-seed-should-therefore-be-treated-before-seeding-to-de-stroy-the-fungus-spores-clinging-to-the-coats-professor-bouey-has-recommended-the-following-treatment-and-preventive-measures-quotuse-formaldehyde-a-RDE3AE.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. ii3 long spindle-shaped, consisting of a string of cells. Thick- walled spores are also produced, consisting of several cells, and are capable of resting over in the soil for some time before ger- minating. The chief method of distribution of the fungus is by means of the spores which cling to the seeds of the flax. Flax seed should therefore be treated before seeding to de- stroy the fungus spores clinging to the coats. Professor BoUey has recommended the following treatment and preventive measures: "Use formaldehyde a Stock Photo")
RMRDE3AE–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. ii3 long spindle-shaped, consisting of a string of cells. Thick- walled spores are also produced, consisting of several cells, and are capable of resting over in the soil for some time before ger- minating. The chief method of distribution of the fungus is by means of the spores which cling to the seeds of the flax. Flax seed should therefore be treated before seeding to de- stroy the fungus spores clinging to the coats. Professor BoUey has recommended the following treatment and preventive measures: "Use formaldehyde a
RMPG45F7–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 11 at least in higher forms, is highly organized. In lowly forms of fungi, where the plant body is but a single, small, more or less rounded cell of microscopic size, absorption takes place over the entire surface of the little plant and there is no specialized region for the performance of this function. In all of the higher forms absorption takes place through a system of much- branched, fine threads of microscopic size. In a mushroom, for instance, these threads penetrate the soil for a considerable distance, often for fe
RMRDD8TF–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 569 celium is at work witliin the leaf. On the under surface these patches show at first a faint light grey shimmer, which later de- velops into the grey mold-like growth of the fully developed patches of the summer spores. These patches spread rapidly and the whole leaf, in the course of a few weeks, dies, becomes brittle and useless as a starch-making organ and dangerous as a pro-. FlG. 197.—Downy mildew of grape. On the right is a healthy bunch of grapes; on the left a bunch badly diseased. Original. ducer of the fungus s
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 245 Dry rot or house fungus rot [Merulius lacrymans (Wulf.) Schum.]. This fungus is one of the most destructive of timber rots both on ac- count of its action and its frequent oc- currence. It is one of the simplest of the pore fungi, hav- ing only shallow pores on a flat pros- trate fruiting body. It may almost be termed a domesti- cated fungus for it appears almost ex- clusively in the neighborhood of dwellings and' is very seldom seen native in the woods. It has therefore been called by the Ger- m a n s '^h a u s- schwamm Stock Photo](https://c8.alamy.com/comp/PG4F49/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-245-dry-rot-or-house-fungus-rot-merulius-lacrymans-wulf-schum-this-fungus-is-one-of-the-most-destructive-of-timber-rots-both-on-ac-count-of-its-action-and-its-frequent-oc-currence-it-is-one-of-the-simplest-of-the-pore-fungi-hav-ing-only-shallow-pores-on-a-flat-pros-trate-fruiting-body-it-may-almost-be-termed-a-domesti-cated-fungus-for-it-appears-almost-ex-clusively-in-the-neighborhood-of-dwellings-and-is-very-seldom-seen-native-in-the-woods-it-has-therefore-been-called-by-the-ger-m-a-n-s-h-a-u-s-schwamm-PG4F49.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 245 Dry rot or house fungus rot [Merulius lacrymans (Wulf.) Schum.]. This fungus is one of the most destructive of timber rots both on ac- count of its action and its frequent oc- currence. It is one of the simplest of the pore fungi, hav- ing only shallow pores on a flat pros- trate fruiting body. It may almost be termed a domesti- cated fungus for it appears almost ex- clusively in the neighborhood of dwellings and' is very seldom seen native in the woods. It has therefore been called by the Ger- m a n s '^h a u s- schwamm Stock Photo")
RMPG4F49–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 245 Dry rot or house fungus rot [Merulius lacrymans (Wulf.) Schum.]. This fungus is one of the most destructive of timber rots both on ac- count of its action and its frequent oc- currence. It is one of the simplest of the pore fungi, hav- ing only shallow pores on a flat pros- trate fruiting body. It may almost be termed a domesti- cated fungus for it appears almost ex- clusively in the neighborhood of dwellings and' is very seldom seen native in the woods. It has therefore been called by the Ger- m a n s '^h a u s- schwamm
RMMCK88C–. Fig. 13. Botrytis disease of the tulip : (o) bulb showing black sclerotia, (b) fungal growth on the bulb.
RMRDEXBA–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 195 up of compounds accompanied by the production of gases just as is effected by yeast plants in bread- and beer-making processes. These fermentation processes are of many kinds. Butter becomes rancid and milk may be broken up and soured by the action of these bacteria. Upon the action of milk-fermenting bacteria depend other processes in certain methods of curing hay and ensilage. Again, fermenting bac- teria are the agents of fermentation in the production of vin- egar. Nitrifying bacteria. Of great importance in agricult
RMPG45DA–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 53 ual, it is living parasitically on the remainder of the host plant. That the broom itself is not injured, but rather stimulated, in its growth is seen, by the production of such numerous and large-sized branches. But the ultimate effect upon the whole. Fig. 23.—Witches'-broom on balsam fir, caused by a rust fungus (Aecidium elatinuin). The branches of the broom are vertical instead of horizontal, as are the normal, un- diseased branches in the right of the picture. Original. plant is injurious because the normal balance o
RMME83T1–. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . «••iönge oon Bostrichus Hneatns in Äiefern= l)olj, im £luer= unb 8ängöid)nitt; in natür= lid)er ©röße. D^ad) 9titjema=So§. tief magered^t in ben (Stamm l^ineingel^en auf bem 30tuttergange ftef)enbe, alfo ben fur^e Saroengänge (gig. 68) I)aben (oergl 2lnioeient)eit bet- A^ferö an ben 1' 4—1' ©äuge luerbeu im (yrü[)linge geboI)rt, bie 3uli, unb im Stuguft erfd)eint ber Ääfer. ') aJergl. tarfd) in ©ntom. 9lad)r. 1890, pag. 219.
RMRDE3EF–. Minnesota plant diseases. Plant diseases. FiG. 143.—Spores of crown rust of wheat (Puccinia coronata). w. Win- ter spores, with a crown of finger- like protuberances at the top of each spore; from the wheat plant, a. Summer spores from the wheat plant, c. Cluster-cup spores from the alder-leaved buckthorn. Highly magnified. After Arthur and Hol- way. mon wild grasses, including squirrel tail grass (Hordeum jubatum), and also that the rust from these can infect wheat plants. This is a very discouraging feature, for it seems almost impossible to eliminate all of these weeds. Unless this is don
RMPG45DC–. Minnesota plant diseases. Plant diseases. 52 Minnesota Plant Diseases.. B3 < I. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Freeman, Edward Monroe, 1875-. Saint Paul, Minn.
RMRG32PP–. California plant diseases. Plant diseases. 1164 UNIVERSITY OF CALIFORNIA—EXPERIMENT STATION.. Fig. 85.—Rose mildew (Sijhaerothcca humuli).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Smith, Ralph E. (Ralph Eliot), 1874-1953; Smith, Elizabeth H. (Elizabeth Hight), 1877-1933. Berkeley, Cal. : Agricultural Experiment Station
![. Minnesota plant diseases. Plant diseases. ;74 Minnesota Plant Diseases. occurs on other more or less closely related plants. The fungus mycelium gains entrance to the plant in the spring and first pro- duces cluster cups. These are followed by the summer spores, throughout the summer months, forming small red-brown patches. ]"lG. 199.—Leaf rust of roses. The cluster-cup stage on the stems and leaves. On left is a stem distorted by the cluster-cup cushions. Photograph by H. Cuzner upon large, dark, red-brown spots in great abundance, on the lower surface of the leaves. The summer-spores Stock Photo](https://c8.alamy.com/comp/PG4EJA/minnesota-plant-diseases-plant-diseases-74-minnesota-plant-diseases-occurs-on-other-more-or-less-closely-related-plants-the-fungus-mycelium-gains-entrance-to-the-plant-in-the-spring-and-first-pro-duces-cluster-cups-these-are-followed-by-the-summer-spores-throughout-the-summer-months-forming-small-red-brown-patches-quotlg-199leaf-rust-of-roses-the-cluster-cup-stage-on-the-stems-and-leaves-on-left-is-a-stem-distorted-by-the-cluster-cup-cushions-photograph-by-h-cuzner-upon-large-dark-red-brown-spots-in-great-abundance-on-the-lower-surface-of-the-leaves-the-summer-spores-PG4EJA.jpg ". Minnesota plant diseases. Plant diseases. ;74 Minnesota Plant Diseases. occurs on other more or less closely related plants. The fungus mycelium gains entrance to the plant in the spring and first pro- duces cluster cups. These are followed by the summer spores, throughout the summer months, forming small red-brown patches. ]"lG. 199.—Leaf rust of roses. The cluster-cup stage on the stems and leaves. On left is a stem distorted by the cluster-cup cushions. Photograph by H. Cuzner upon large, dark, red-brown spots in great abundance, on the lower surface of the leaves. The summer-spores Stock Photo")
RMPG4EJA–. Minnesota plant diseases. Plant diseases. ;74 Minnesota Plant Diseases. occurs on other more or less closely related plants. The fungus mycelium gains entrance to the plant in the spring and first pro- duces cluster cups. These are followed by the summer spores, throughout the summer months, forming small red-brown patches. ]"lG. 199.—Leaf rust of roses. The cluster-cup stage on the stems and leaves. On left is a stem distorted by the cluster-cup cushions. Photograph by H. Cuzner upon large, dark, red-brown spots in great abundance, on the lower surface of the leaves. The summer-spores
RMRG33MJ–. California plant diseases. Plant diseases. 1122 UNIVERSITY OF CALIFORNIA—EXPERIMENT STATION. soil from about the bud and thoroughly cultivating or digging about the tree. Water must not be allowed to stand about the trunk or the soil remain continually saturated. After thus improving conditions, the tree itself may be treated by taking out narrow slits of bark on several sides of the trunk, extending from the ground up to the fork. These slits should pass through the gummy portion and also the unaffected bark. This will usually suffice to effect a cure if taken in time and if soil con- ditio
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases-. FiG. 171.—Downy mildew of melons and cucumbers. 1. A spore-bearing thread; sp. young spores; 2, 2' and 2", mature spores of the ordinary form. 3. Spore-bearing thread emerging from an air-pore on a leaf. 4. A cluster of spore-bearing threads taken from a cucumber leaf in dry weather, t, unusual types of spore-bearing threads and spores. 6. A short stalked spore from a muskmelon leaf. 7. Cells of a cucumber leaf with the fungus mycelium between them; sucker threads h, h' and h". 8. An unusual type of spore from the Stock Photo](https://c8.alamy.com/comp/PG4ENE/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-fig-171downy-mildew-of-melons-and-cucumbers-1-a-spore-bearing-thread-sp-young-spores-2-2-and-2quot-mature-spores-of-the-ordinary-form-3-spore-bearing-thread-emerging-from-an-air-pore-on-a-leaf-4-a-cluster-of-spore-bearing-threads-taken-from-a-cucumber-leaf-in-dry-weather-t-unusual-types-of-spore-bearing-threads-and-spores-6-a-short-stalked-spore-from-a-muskmelon-leaf-7-cells-of-a-cucumber-leaf-with-the-fungus-mycelium-between-them-sucker-threads-h-h-and-hquot-8-an-unusual-type-of-spore-from-the-PG4ENE.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases-. FiG. 171.—Downy mildew of melons and cucumbers. 1. A spore-bearing thread; sp. young spores; 2, 2' and 2", mature spores of the ordinary form. 3. Spore-bearing thread emerging from an air-pore on a leaf. 4. A cluster of spore-bearing threads taken from a cucumber leaf in dry weather, t, unusual types of spore-bearing threads and spores. 6. A short stalked spore from a muskmelon leaf. 7. Cells of a cucumber leaf with the fungus mycelium between them; sucker threads h, h' and h". 8. An unusual type of spore from the Stock Photo")
RMPG4ENE–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases-. FiG. 171.—Downy mildew of melons and cucumbers. 1. A spore-bearing thread; sp. young spores; 2, 2' and 2", mature spores of the ordinary form. 3. Spore-bearing thread emerging from an air-pore on a leaf. 4. A cluster of spore-bearing threads taken from a cucumber leaf in dry weather, t, unusual types of spore-bearing threads and spores. 6. A short stalked spore from a muskmelon leaf. 7. Cells of a cucumber leaf with the fungus mycelium between them; sucker threads h, h' and h". 8. An unusual type of spore from the
RMMCMRKY–. Fig. 42 RosELLiNiA Spp. (A) ASCUS OF R. BUNODES. (B) ASCUS OF R. SUBICULATA. (C) AsCUS OF R. PARAGUAYENSIS (?) (E) AsCUS OF R. PePO. (F) Terminal Hyphae from Conidial Fructification of Pepo. (G) External Hypha characteristic of Rosellinia Spp.
![. Minnesota plant diseases. Plant diseases. 220 Minnesota Plant Diseases. on standing." [Mass. Bull. No. 80â1902.] Only the clear blue fluid should be used. This solution is recommended only when the staining of the foliage and fruits by bordeaux is objectionable, e. g., in fruits nearing maturity and on green- house plants. It has been recom- mended for fungus parasites as the powdery mildews which possess a conspicuous and superficial mycelium. A solution of copper carbonate (one pound to forty gallons of water) with- out ammonia has also been recom- mended for fruit rots. Copper acetat Stock Photo](https://c8.alamy.com/comp/RDEX6P/minnesota-plant-diseases-plant-diseases-220-minnesota-plant-diseases-on-standingquot-mass-bull-no-801902-only-the-clear-blue-fluid-should-be-used-this-solution-is-recommended-only-when-the-staining-of-the-foliage-and-fruits-by-bordeaux-is-objectionable-e-g-in-fruits-nearing-maturity-and-on-green-house-plants-it-has-been-recom-mended-for-fungus-parasites-as-the-powdery-mildews-which-possess-a-conspicuous-and-superficial-mycelium-a-solution-of-copper-carbonate-one-pound-to-forty-gallons-of-water-with-out-ammonia-has-also-been-recom-mended-for-fruit-rots-copper-acetat-RDEX6P.jpg ". Minnesota plant diseases. Plant diseases. 220 Minnesota Plant Diseases. on standing." [Mass. Bull. No. 80â1902.] Only the clear blue fluid should be used. This solution is recommended only when the staining of the foliage and fruits by bordeaux is objectionable, e. g., in fruits nearing maturity and on green- house plants. It has been recom- mended for fungus parasites as the powdery mildews which possess a conspicuous and superficial mycelium. A solution of copper carbonate (one pound to forty gallons of water) with- out ammonia has also been recom- mended for fruit rots. Copper acetat Stock Photo")
RMRDEX6P–. Minnesota plant diseases. Plant diseases. 220 Minnesota Plant Diseases. on standing." [Mass. Bull. No. 80â1902.] Only the clear blue fluid should be used. This solution is recommended only when the staining of the foliage and fruits by bordeaux is objectionable, e. g., in fruits nearing maturity and on green- house plants. It has been recom- mended for fungus parasites as the powdery mildews which possess a conspicuous and superficial mycelium. A solution of copper carbonate (one pound to forty gallons of water) with- out ammonia has also been recom- mended for fruit rots. Copper acetat
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. "3 Black molds (Mucorinece in part). These fungi are exceed- ingly common plants found on starchy materials and hence often called'bread molds. ylthough they have descended from water-inhabiting plants they have retained almost no trace of an aquatic habit, with the exception of the requirement of a moist atmosphere for growth. That is to say, there is no formation of swimming spores; for all of the spores, except the resting spores, are distributed by the wind, though aided in some cases by a special explosive apparat Stock Photo](https://c8.alamy.com/comp/PG4FKA/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-quot3-black-molds-mucorinece-in-part-these-fungi-are-exceed-ingly-common-plants-found-on-starchy-materials-and-hence-often-calledbread-molds-ylthough-they-have-descended-from-water-inhabiting-plants-they-have-retained-almost-no-trace-of-an-aquatic-habit-with-the-exception-of-the-requirement-of-a-moist-atmosphere-for-growth-that-is-to-say-there-is-no-formation-of-swimming-spores-for-all-of-the-spores-except-the-resting-spores-are-distributed-by-the-wind-though-aided-in-some-cases-by-a-special-explosive-apparat-PG4FKA.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. "3 Black molds (Mucorinece in part). These fungi are exceed- ingly common plants found on starchy materials and hence often called'bread molds. ylthough they have descended from water-inhabiting plants they have retained almost no trace of an aquatic habit, with the exception of the requirement of a moist atmosphere for growth. That is to say, there is no formation of swimming spores; for all of the spores, except the resting spores, are distributed by the wind, though aided in some cases by a special explosive apparat Stock Photo")
RMPG4FKA–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. "3 Black molds (Mucorinece in part). These fungi are exceed- ingly common plants found on starchy materials and hence often called'bread molds. ylthough they have descended from water-inhabiting plants they have retained almost no trace of an aquatic habit, with the exception of the requirement of a moist atmosphere for growth. That is to say, there is no formation of swimming spores; for all of the spores, except the resting spores, are distributed by the wind, though aided in some cases by a special explosive apparat
RMRDEXYC–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 39 plant debris from year to year. Often apparently earth-inhabit- ing fungi can be traced back to their attachment to wood lying buried in the soil, and many plants which may apparently live both on the soil and on the wood belong to this category.. Fig. is.—An earth-dwelling fungus (Lepiota procera) of the gill fungi. Original. Among the earth-inhabiting fungi the mushroom group is per- haps most prominent, but a host of other fungi have a similar habit. Club fungi, many pore fungi, puflf balls, carrion fungi, cup fungi, a
RMPG4FCN–. Minnesota plant diseases. Plant diseases. 172 Minnesota Plant Diseases. and not a few timber diseases can be traced to this group. Most forms are, however, saprophytes. The common smothering- fungus which is found at the base of young shrubs and trees is a smooth-shelf fungus. (Figs. 81, 82, 117, 118.) Club fungi {Clavariacea). As the common name implies, these fungi have club-shaped fruiting bodies. The club in some forms is single and thus simple. In other forms it may be branched and the most common of our club fungi are very abundantly branched thus forming dense tufts. The palisade surf
RMME833H–. Die krankheiten der pflanzen, ein handbuch fur land-und forstwirte, gartner, gartenfreunde und botaniker . m- 46. ®ic 'ßtDZXQcifabz (Jassus sexnotatus). A unb B ern)ad)fenc ©ifabe in iier= lcl)iebener ©telUing gefe^en/|C junge, eben an§ bem (gi auögefd)lüp[te 6ifabe, D 24 ©tunbcn alteä, bunHer gemorbeneä ^nnge in i^-oxm flügellofer ?arüen; A bi§ D in glei(i)er 35ergrü^erung. C ein ©tiicE ^afer mit ©nippen oon (Siern, welä)i nnter ber Dbert)nut in§ 33Iatt eingefd)oben finb nnb fid) bort entmid'elt l)aben, of)ne am Statte irgcnb eine ^Beränbcning I)eriior3ubringen, mieandjgig.F bei ftärferer S
![. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1147. Fig. 71.—Shoulder spot of orange.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Smith, Ralph E. (Ralph Eliot), 1874-1953; Smith, Elizabeth H. (Elizabeth Hight), 1877-1933. Berkeley, Cal. : Agricultural Experiment Station Stock Photo](https://c8.alamy.com/comp/RG335H/california-plant-diseases-plant-diseases-bulletin-218-california-plant-diseases-1147-fig-71shoulder-spot-of-orange-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-smith-ralph-e-ralph-eliot-1874-1953-smith-elizabeth-h-elizabeth-hight-1877-1933-berkeley-cal-agricultural-experiment-station-RG335H.jpg ". California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1147. Fig. 71.—Shoulder spot of orange.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Smith, Ralph E. (Ralph Eliot), 1874-1953; Smith, Elizabeth H. (Elizabeth Hight), 1877-1933. Berkeley, Cal. : Agricultural Experiment Station Stock Photo")
RMRG335H–. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1147. Fig. 71.—Shoulder spot of orange.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Smith, Ralph E. (Ralph Eliot), 1874-1953; Smith, Elizabeth H. (Elizabeth Hight), 1877-1933. Berkeley, Cal. : Agricultural Experiment Station
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 12 = mycelium, minute spheres about the size of a pin point. They are at first white, then become yellow and finally dark brown to black. They are the sac capsules and bear one or more spher- ical or pear-shaped sacs with two to eight spores in each, ac- cording to the species. The capsular wall has no special meth- od of opening but it may often possess elaborately-shaped threads known as appendages, which are often much branched and form a crown or circle around the case. Such may as- -'â --" .../â sist in the distrib Stock Photo](https://c8.alamy.com/comp/PG4FJ8/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-12-=-mycelium-minute-spheres-about-the-size-of-a-pin-point-they-are-at-first-white-then-become-yellow-and-finally-dark-brown-to-black-they-are-the-sac-capsules-and-bear-one-or-more-spher-ical-or-pear-shaped-sacs-with-two-to-eight-spores-in-each-ac-cording-to-the-species-the-capsular-wall-has-no-special-meth-od-of-opening-but-it-may-often-possess-elaborately-shaped-threads-known-as-appendages-which-are-often-much-branched-and-form-a-crown-or-circle-around-the-case-such-may-as-quot-sist-in-the-distrib-PG4FJ8.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 12 = mycelium, minute spheres about the size of a pin point. They are at first white, then become yellow and finally dark brown to black. They are the sac capsules and bear one or more spher- ical or pear-shaped sacs with two to eight spores in each, ac- cording to the species. The capsular wall has no special meth- od of opening but it may often possess elaborately-shaped threads known as appendages, which are often much branched and form a crown or circle around the case. Such may as- -'â --" .../â sist in the distrib Stock Photo")
RMPG4FJ8–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 12 = mycelium, minute spheres about the size of a pin point. They are at first white, then become yellow and finally dark brown to black. They are the sac capsules and bear one or more spher- ical or pear-shaped sacs with two to eight spores in each, ac- cording to the species. The capsular wall has no special meth- od of opening but it may often possess elaborately-shaped threads known as appendages, which are often much branched and form a crown or circle around the case. Such may as- -'â --" .../â sist in the distrib
RMME83KJ–. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker .
![. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1093 Hollow Apple. Figure 20. A peculiar condition found in one or two instances.. The affected fruit is sunken in on one side and has a misshapen appearance. On cutting through the apple large hollow cavities are found corresponding to the sunken areas on the surface. Due apparently to some injury- while the fruit was small.. Fig. 20.—Hollow apple. Club Tip. Terminal buds die back or fail to grow and enlarged swellings develop at the ends of the living portion of the twigs. Lateral shoots may develop later f Stock Photo](https://c8.alamy.com/comp/RG34EJ/california-plant-diseases-plant-diseases-bulletin-218-california-plant-diseases-1093-hollow-apple-figure-20-a-peculiar-condition-found-in-one-or-two-instances-the-affected-fruit-is-sunken-in-on-one-side-and-has-a-misshapen-appearance-on-cutting-through-the-apple-large-hollow-cavities-are-found-corresponding-to-the-sunken-areas-on-the-surface-due-apparently-to-some-injury-while-the-fruit-was-small-fig-20hollow-apple-club-tip-terminal-buds-die-back-or-fail-to-grow-and-enlarged-swellings-develop-at-the-ends-of-the-living-portion-of-the-twigs-lateral-shoots-may-develop-later-f-RG34EJ.jpg ". California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1093 Hollow Apple. Figure 20. A peculiar condition found in one or two instances.. The affected fruit is sunken in on one side and has a misshapen appearance. On cutting through the apple large hollow cavities are found corresponding to the sunken areas on the surface. Due apparently to some injury- while the fruit was small.. Fig. 20.—Hollow apple. Club Tip. Terminal buds die back or fail to grow and enlarged swellings develop at the ends of the living portion of the twigs. Lateral shoots may develop later f Stock Photo")
RMRG34EJ–. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1093 Hollow Apple. Figure 20. A peculiar condition found in one or two instances.. The affected fruit is sunken in on one side and has a misshapen appearance. On cutting through the apple large hollow cavities are found corresponding to the sunken areas on the surface. Due apparently to some injury- while the fruit was small.. Fig. 20.—Hollow apple. Club Tip. Terminal buds die back or fail to grow and enlarged swellings develop at the ends of the living portion of the twigs. Lateral shoots may develop later f
RMPG4EP2–. Minnesota plant diseases. Plant diseases. Fig. 16S.—Potato blight. Early stages of the blight on the leaves. After Clinton. usually much branched, so that a miniature bush-like structure is produced and each branch terminates in a spore. These spores, as is true for most of the downy mildews, are in reality spore cases, for when placed in water they later give rise to a large number of swimming spores. When the latter come to rest they germinate into a tube which causes infection of the host plant. As far as is known at present, no winter spores are produced. The mycelium, however, is capabl
RMME837M–. Die krankheiten der pflanzen, ein handbuch fur land-und forstwirte, gartner, gartenfreunde und botaniker . nenpuppen ummanbelu; fdion nadj etina 5el)n Sagen fried)t au§ biefen bie fliege au§. (SS folgen fid) loegen ber rafd^en (Sntioideluug mel)rere ©enerationen im 3a^re, aie§l)alb bie Mbenblätter ben ganjen ©ommer über in biefer 2ßeife befd)äbigt loerben tonnen. (Sin grünblid;e§ ©cgeumittel ift nod) nid)t gefunben. 3(m erften möd)te nod) Reifen ein jeitigeS rafd)e§ nnb fleißigeg 2tbblatteu ber befalleneu Slätter, in benen bie SKaben nod) entt)alten finb, fobalb foldje 33lätter bemerfbar mer
![. Minnesota plant diseases. Plant diseases. 368 Minnesota Plant Diseases. "If after two or three days there remain portions which are unchanged in color the vineyard is treated a second time, partic- tilar attention being paid to the parts omitted at the first treat- ment." Lodeman (The Spraying of Plants, p. 295.) Downy mildew of vines [Plasmopara viticola (B. & C.) Berl.]. This is a very destructive disease of vines originating in the United States, but since about 1878 causing enormous destruc-. VlG. 196.âDowny mildew of grape. Under surface of a leaf, showing down of mildew t Stock Photo](https://c8.alamy.com/comp/RDE339/minnesota-plant-diseases-plant-diseases-368-minnesota-plant-diseases-quotif-after-two-or-three-days-there-remain-portions-which-are-unchanged-in-color-the-vineyard-is-treated-a-second-time-partic-tilar-attention-being-paid-to-the-parts-omitted-at-the-first-treat-mentquot-lodeman-the-spraying-of-plants-p-295-downy-mildew-of-vines-plasmopara-viticola-b-amp-c-berl-this-is-a-very-destructive-disease-of-vines-originating-in-the-united-states-but-since-about-1878-causing-enormous-destruc-vlg-196downy-mildew-of-grape-under-surface-of-a-leaf-showing-down-of-mildew-t-RDE339.jpg ". Minnesota plant diseases. Plant diseases. 368 Minnesota Plant Diseases. "If after two or three days there remain portions which are unchanged in color the vineyard is treated a second time, partic- tilar attention being paid to the parts omitted at the first treat- ment." Lodeman (The Spraying of Plants, p. 295.) Downy mildew of vines [Plasmopara viticola (B. & C.) Berl.]. This is a very destructive disease of vines originating in the United States, but since about 1878 causing enormous destruc-. VlG. 196.âDowny mildew of grape. Under surface of a leaf, showing down of mildew t Stock Photo")
RMRDE339–. Minnesota plant diseases. Plant diseases. 368 Minnesota Plant Diseases. "If after two or three days there remain portions which are unchanged in color the vineyard is treated a second time, partic- tilar attention being paid to the parts omitted at the first treat- ment." Lodeman (The Spraying of Plants, p. 295.) Downy mildew of vines [Plasmopara viticola (B. & C.) Berl.]. This is a very destructive disease of vines originating in the United States, but since about 1878 causing enormous destruc-. VlG. 196.âDowny mildew of grape. Under surface of a leaf, showing down of mildew t
RMPG4EHD–. Minnesota plant diseases. Plant diseases. 396 Minnesota Plant Diseases. site on many wild plants and is also found on cultivated plants. It is found in great abundance on plants of the crowfoot and pea families. It appears on wild vetches as an extensive, fine, white mycelium, which bears the summer spores as a starchy powder, typical for the powdery mildews. The spore-sac-cap- sules are formed in the late summer and fall and appear as small black bodies about the size of a very small pin-point. The cap- sules have unbranched, brown appendages, which are inter- woven with the mycelial hyphae
RMME84FE–. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . m- 22. ^tc^tcnftamm mit Ucberwattung üon ^d)(M' öjunbcn, im dtcrfrf)nitt, uerfleincrt. SIiiö ber l'age ber brei ©d)äluninbcu unb aii§ ben 3 Wib ben ©taimii breiinal tu uiel}riäl)rigeu 3iiüfd)eu= räumen, ba§> erftc 9)ial im l)albcu Umfange gefc^ält i)atte. 9(1 al^e bürg. angegriffen mirb; ebenfo bie Sßei^tanne; x)xtx geitig fid^ entmicfelnben 53or!e mit 3—5, ^äxd}m meift mit 12 bi§ 14 Sauren gefd)ält. 3(n(^ 2anb!)i3l3er, mie @fd)e unb ^ic§e merben angegangen, non lefeterer peitfd)e
RMRDRXH9–. Law and regulations concerning plant quarantine service in Japan. Plant quarantine; Plant diseases. The official stamp certifying admission as the result of the iospection.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Japan. Imperial plant quarantine station. Japan. Imperial plant quarantine station
RMPG4FBT–. Minnesota plant diseases. Plant diseases. I7J Minnesota Plant Diseases. covering below which attaches the edge of the cap to the stem. At maturity this ruptures and a part of it remains at- tached to the stem as a so-called ring. They are all earth-in- habiting saprophytes and most forms are edible while a few are poisonous. (Figs. 5, 10, 36, 81, 85, 120 to 127, 163.) Gill fungi (Agaricacece). In this group of fungi the palisade layer is spread over structures known as gills. These gills are plate- or leaf-like bodies arranged on the under side of an um- brella-like cap and run from the stal
RMMCK87P–. Fig. 24. Colletotrichum oligochcetum growing on cotton-wool, straw, and wood. [Facing page 94
RMRDEWWA–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 263 with, this parasite is probably not very destructive to timbers in this state. It has been observed on living shade trees.. Fig. 129.—Fruiting bodies of the fatty Pholiota (Fholiota adiposa), in a wound of an oak tree trunk. Original. The scurfy Pholiota rot (Pholiota squarrosa Midi.). This is a close relative of ths fatty Pholiota and forms fruiting bodies which resemble those of the latter. They are not so viscid in rainy weather and are persistently scurfy. It occurs on logs,. Please note that these images are extract
RMPG4FD5–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 167 fungi is in almost all cases of a gelatinous consistency, especial- ly in the interior, and this is due to the gelatinization of the outer portion of the fungus threads, which compose it. The threads, therefore, appear as a very loose network in a great mass of gelatine. Near the surface of the fruiting body the thread walls do not gelatinize but, by the dense network there produced, form a tough covering. The basidia usually cover a special area as they do in the common Jews' ear fungus. In the young basidium a fusion o
RMME8326–. Die krankheiten der pflanzen, ein handbuch fur land-und forstwirte, gartner, gartenfreunde und botaniker . g^ig. 55. von Diastrophus ©alle von Diastrophus Ral>i 3(11 PotentiUa. (xw einem 33rombeerftengel. A bie ganje ©alle, eine Ärnmnumg beö @tengel§ oeranlaffenb. B C.uer= fdjnitt ber ©alle, m ermeitertcs Waxi be§ ©tengelS, h ber .Oolsi^ing be§= felben, in meld)em 6 8arDenfümmorn ju jel)en finb. DOU Potentilla argeutea unb canescens^i 3(11 SBrombccr- n. ^- Diastrophus Rubi Hartig^ erjeugt an beu ©teugelu unfrer Srom= .f)imbeer= bcer= uub .spimbeerfträudier eine 3-8 cm lange, bi§ 1 cm biet
![. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1149 PEA. Mildew (Erysiplie polygoni). Covers the plants and pods with a white mildew. Most prevalent in wet weather and is usually only serious on the winter crop. Dust the vines with dry sulphur at the first appearance of the trouble. In cloudy weather spraying with Bordeaux mixture is most effective. Blight (Ascochyta pisi). Produces black spots on the leaves and pods and seriously injures the vine. Most troublesome in wet weather.. Please note that these images are extracted from scanned page images that Stock Photo](https://c8.alamy.com/comp/RG3333/california-plant-diseases-plant-diseases-bulletin-218-california-plant-diseases-1149-pea-mildew-erysiplie-polygoni-covers-the-plants-and-pods-with-a-white-mildew-most-prevalent-in-wet-weather-and-is-usually-only-serious-on-the-winter-crop-dust-the-vines-with-dry-sulphur-at-the-first-appearance-of-the-trouble-in-cloudy-weather-spraying-with-bordeaux-mixture-is-most-effective-blight-ascochyta-pisi-produces-black-spots-on-the-leaves-and-pods-and-seriously-injures-the-vine-most-troublesome-in-wet-weather-please-note-that-these-images-are-extracted-from-scanned-page-images-that-RG3333.jpg ". California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1149 PEA. Mildew (Erysiplie polygoni). Covers the plants and pods with a white mildew. Most prevalent in wet weather and is usually only serious on the winter crop. Dust the vines with dry sulphur at the first appearance of the trouble. In cloudy weather spraying with Bordeaux mixture is most effective. Blight (Ascochyta pisi). Produces black spots on the leaves and pods and seriously injures the vine. Most troublesome in wet weather.. Please note that these images are extracted from scanned page images that Stock Photo")
RMRG3333–. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1149 PEA. Mildew (Erysiplie polygoni). Covers the plants and pods with a white mildew. Most prevalent in wet weather and is usually only serious on the winter crop. Dust the vines with dry sulphur at the first appearance of the trouble. In cloudy weather spraying with Bordeaux mixture is most effective. Blight (Ascochyta pisi). Produces black spots on the leaves and pods and seriously injures the vine. Most troublesome in wet weather.. Please note that these images are extracted from scanned page images that
RMPG4FFW–. Minnesota plant diseases. Plant diseases. 144 Minnesota Plant Diseases. merous intermediate conditions exist showing great differences not only in the number of hairs but in the kinds produced. The spores are usu- ally oval in shape and s i n g 1 e-celled, though some are somewhat elongat- ed and many-celled. The explosive appa- ratus for spore or sac ejection has al- ready been noted. It is in the true cup fungi that these de- vices reach the greatest degree of perfection. Acces- sory spore-forms are not at all common. The smaller forms of the true cup fungi abound on dead sticks or dead st
![. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . i^iö- 23. Sorosporium Saponariao A'W., A (Btiuf ciuei? ^'iirilifdinittec^ burd) oiu'bc= fallcncc- i^Kitt uoii ('erastium arveuso, a ^ic ^^luf^'U= un^ Mo 3iincuieitc, tf (>JcfäBbün^cl. 3(uf bn- ^uueufcite u ift bcr H^ilj ^urd) bic"(ipii'^crmi6 m t)cruor(iemad})cu uuD ftcut eiue biete ^^il^niaffe ss, i'^ar, üou ber l)ier uur ^er eine 5tanö ',u icl)cn ift. s bic iuuerite jüncvte 3d)id)t Dee 2poreulai-|er§, mo bie viporeutuäucl nod) in bcr iBik'^uiu-j beciriffeu fiub; Sj bic älter Stock Photo](https://c8.alamy.com/comp/ME83JA/die-krankheiten-der-pflanzen-ein-handbuch-fr-land-und-forstwirte-grtner-gartenfreunde-und-botaniker-ii-23-sorosporium-saponariao-aw-a-btiuf-ciuei-iirilifdinittec-burd-oiubc=-fallcncc-ikitt-uoii-erastium-arveuso-a-ic-lufu=-un-mo-3iincuieitc-tf-gtjcfbbncl-3uf-bn-uueufcite-u-ift-bcr-hilj-urd-bicquotipiicrmi6-m-tcruoriemadcu-uud-ftcut-eiue-biete-ilniaffe-ss-iar-ou-ber-lier-uur-er-eine-5tan-u-iclcn-ift-s-bic-iuuerite-jncvte-3didt-dee-2poreulai-er-mo-bie-viporeutuucl-nod-in-bcr-ibikuiu-j-beciriffeu-fiub-sj-bic-lter-ME83JA.jpg ". Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . i^iö- 23. Sorosporium Saponariao A'W., A (Btiuf ciuei? ^'iirilifdinittec^ burd) oiu'bc= fallcncc- i^Kitt uoii ('erastium arveuso, a ^ic ^^luf^'U= un^ Mo 3iincuieitc, tf (>JcfäBbün^cl. 3(uf bn- ^uueufcite u ift bcr H^ilj ^urd) bic"(ipii'^crmi6 m t)cruor(iemad})cu uuD ftcut eiue biete ^^il^niaffe ss, i'^ar, üou ber l)ier uur ^er eine 5tanö ',u icl)cn ift. s bic iuuerite jüncvte 3d)id)t Dee 2poreulai-|er§, mo bie viporeutuäucl nod) in bcr iBik'^uiu-j beciriffeu fiub; Sj bic älter Stock Photo")
RMME83JA–. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . i^iö- 23. Sorosporium Saponariao A'W., A (Btiuf ciuei? ^'iirilifdinittec^ burd) oiu'bc= fallcncc- i^Kitt uoii ('erastium arveuso, a ^ic ^^luf^'U= un^ Mo 3iincuieitc, tf (>JcfäBbün^cl. 3(uf bn- ^uueufcite u ift bcr H^ilj ^urd) bic"(ipii'^crmi6 m t)cruor(iemad})cu uuD ftcut eiue biete ^^il^niaffe ss, i'^ar, üou ber l)ier uur ^er eine 5tanö ',u icl)cn ift. s bic iuuerite jüncvte 3d)id)t Dee 2poreulai-|er§, mo bie viporeutuäucl nod) in bcr iBik'^uiu-j beciriffeu fiub; Sj bic älter
RMRDRXGY–. Law and regulations concerning plant quarantine service in Japan. Plant quarantine; Plant diseases. The official stamp certifying exemption of the inspection.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Japan. Imperial plant quarantine station. Japan. Imperial plant quarantine station
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 307 great numbers. These spores are small, oval, or cylindrical, colorless cells. Their production is accompanied by the secre- tion of a sugary fluid known as "honey dew," which is at- tractive to insects. The latter in their search for the "honey dew" distribute the summer spores from plant to plant and rapidly spread the disease. Toward the end of the summer, the formation of summer spores ceases and the underlying fun- gus mass becomes more compact and hard, and the external threads form several layer Stock Photo](https://c8.alamy.com/comp/PG4ET8/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-307-great-numbers-these-spores-are-small-oval-or-cylindrical-colorless-cells-their-production-is-accompanied-by-the-secre-tion-of-a-sugary-fluid-known-as-quothoney-dewquot-which-is-at-tractive-to-insects-the-latter-in-their-search-for-the-quothoney-dewquot-distribute-the-summer-spores-from-plant-to-plant-and-rapidly-spread-the-disease-toward-the-end-of-the-summer-the-formation-of-summer-spores-ceases-and-the-underlying-fun-gus-mass-becomes-more-compact-and-hard-and-the-external-threads-form-several-layer-PG4ET8.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 307 great numbers. These spores are small, oval, or cylindrical, colorless cells. Their production is accompanied by the secre- tion of a sugary fluid known as "honey dew," which is at- tractive to insects. The latter in their search for the "honey dew" distribute the summer spores from plant to plant and rapidly spread the disease. Toward the end of the summer, the formation of summer spores ceases and the underlying fun- gus mass becomes more compact and hard, and the external threads form several layer Stock Photo")
RMPG4ET8–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 307 great numbers. These spores are small, oval, or cylindrical, colorless cells. Their production is accompanied by the secre- tion of a sugary fluid known as "honey dew," which is at- tractive to insects. The latter in their search for the "honey dew" distribute the summer spores from plant to plant and rapidly spread the disease. Toward the end of the summer, the formation of summer spores ceases and the underlying fun- gus mass becomes more compact and hard, and the external threads form several layer
RMRG332H–. California plant diseases. Plant diseases. i 0 , 1 Fig. 74.—Curl leaf of peach (Exoascus defor- mans). Spray with Bordeaux mixture if the trouble is serious enough to make it profitable. PEACH. Leaf Curl {Exoascus deformans). Figure 74. Many of the leaves are curled and deformed in a char- acteristic manner as they develop in the spring. These afterward wither and fall, together with much of the fruit. A new crop of leaves then develops in a normal manner. Spray with Bordeaux mixture or lime-sulphur just fig. 75. Peach before the buds open in spring. blight (Coryneum r xr a beyennkii). Blig
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 311 count is taken from a bulletin of the North Dakota Ag. Ex. Sta. by H. L. Bolley, who first discovered the true cause of the dis- ease. "The plants are attacked at all ages and die early or late in the stage of growth according to the time and intensity of the attack. If the soil is much afifected, that is to say "flax sick," most of the plants are killed before they get through the surface of the ground. Such areas appear m a field of flax as centers of disease, which enlarge throughout the summer as new p Stock Photo](https://c8.alamy.com/comp/PG4ERW/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-311-count-is-taken-from-a-bulletin-of-the-north-dakota-ag-ex-sta-by-h-l-bolley-who-first-discovered-the-true-cause-of-the-dis-ease-quotthe-plants-are-attacked-at-all-ages-and-die-early-or-late-in-the-stage-of-growth-according-to-the-time-and-intensity-of-the-attack-if-the-soil-is-much-afifected-that-is-to-say-quotflax-sickquot-most-of-the-plants-are-killed-before-they-get-through-the-surface-of-the-ground-such-areas-appear-m-a-field-of-flax-as-centers-of-disease-which-enlarge-throughout-the-summer-as-new-p-PG4ERW.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 311 count is taken from a bulletin of the North Dakota Ag. Ex. Sta. by H. L. Bolley, who first discovered the true cause of the dis- ease. "The plants are attacked at all ages and die early or late in the stage of growth according to the time and intensity of the attack. If the soil is much afifected, that is to say "flax sick," most of the plants are killed before they get through the surface of the ground. Such areas appear m a field of flax as centers of disease, which enlarge throughout the summer as new p Stock Photo")
RMPG4ERW–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 311 count is taken from a bulletin of the North Dakota Ag. Ex. Sta. by H. L. Bolley, who first discovered the true cause of the dis- ease. "The plants are attacked at all ages and die early or late in the stage of growth according to the time and intensity of the attack. If the soil is much afifected, that is to say "flax sick," most of the plants are killed before they get through the surface of the ground. Such areas appear m a field of flax as centers of disease, which enlarge throughout the summer as new p
RMME830H–. Die krankheiten der pflanzen, ein handbuch fur land-und forstwirte, gartner, gartenfreunde und botaniker . gig- 60. Scr Stübfotttpfcifcr (Botys marga- ritaliä). 3ftaupe unb ^uppe nebft Lierfponnenen unb in 8üd)ern äuge» freffenen 3iap§fd)oten.
RMRDEXDX–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. i»i exceedingly poisonous and fungus eaters must take good care that they are familiar with the poisonous varieties found in the state. (Figs. Frontispiece, 6 to 8, lo, i8, 20, 81, 86 to 89, 116, 128 to 132.) Puff-balls and their allies (G aster amy cetes). All of the re- maining basidium-bearing fungi have closed fruiting bodies. The basidia are borne inside of this structure either in palisades lining the surface of chambers or in irregular fashion on loose threads throughout the fruiting body. The latter arrangement. Fig.
RMPG4FCE–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. J 73 I o. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Freeman, Edward Monroe, 1875-. Saint Paul, Minn.
![. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . 5iö- "'â ©ic^rotc Spinne (Tetra nyciiustelarius),ca.40fad) ftärter treteu Mc Wübm auf, unb befto auf= .ueraröfeert. falleuDcr ift bie iöofd)äbigung. lanw pflegt ba% Stock Photo](https://c8.alamy.com/comp/ME848F/die-krankheiten-der-pflanzen-ein-handbuch-fr-land-und-forstwirte-grtner-gartenfreunde-und-botaniker-5i-quot-icrotc-spinne-tetra-nyciiustelariusca40fad-ftrter-treteu-mc-wbm-auf-unb-befto-auf=-uerarfeert-falleudcr-ift-bie-iofdbigung-lanw-pflegt-ba-ME848F.jpg ". Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . 5iö- "'â ©ic^rotc Spinne (Tetra nyciiustelarius),ca.40fad) ftärter treteu Mc Wübm auf, unb befto auf= .ueraröfeert. falleuDcr ift bie iöofd)äbigung. lanw pflegt ba% Stock Photo")
RMME848F–. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . 5iö- "'â ©ic^rotc Spinne (Tetra nyciiustelarius),ca.40fad) ftärter treteu Mc Wübm auf, unb befto auf= .ueraröfeert. falleuDcr ift bie iöofd)äbigung. lanw pflegt ba%
RMRDE31P–. Minnesota plant diseases. Plant diseases. 390 Minnesota Plant Diseases. remain in the cells of the host. The cluster-cups are found on the leaves of some coniferous tree. Spruces in the neighbor- hood of affected cow- berry plants often show an abundance of cluster cups and are usually most seriously attacked in the lower branches. It has not been proven in our American plants that these two stages are con- nected, but there seems to be considerable proba- bility that such is the case. Rust of a n emon e (Puccinia fusca Relh.). Anemone, Thalictrum and allied genera are sub- ject to the attac
RMPG4F4Y–. Minnesota plant diseases. Plant diseases. . Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Freeman, Edward Monroe, 1875-. Saint Paul, Minn.
RMME844C–. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . Jig. 35. Thrips cerealiuui am Dlüc^gen; a—e nerfrfitcbene (Srfranfung§= formen öer ^H'titn.^^e biircl) ben (Sinflnf; ber l)tnter ber oberften @d)eibe ft^enben :iierc, nerfleinert; x bic gelben ^Binben an bcr oberften Scheibe. Sei f eine )ülcl)e Sdjeibe anfgeroIU, oon ber Snnenfeite gefetien, luo fertige Snfeften unb öaroeii jn [eben finb, in natür» Ucl)cr (i5rö|e; b unb g biefe ocrgröfecrt.
RMRDE4DF–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 131 parts of the insect-body, build up a mycelium which consumes all of the interior of the host except the chitinous skin. It thus stores up an enormous amount of nutrient material in the form of a storage organ or sclerotium, which is an exact cast, not only of the external form of the insect but also of the in- ternal organs. When this storage organ has rested for some time, and when conditions of moisture and temperature are favorable, it sends up, usually one or more, rarely two, stalks, which come above ground. Here th
RMPG4F4D–. Minnesota plant diseases. Plant diseases. 24<6 Minnesota Plant Diseases.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Freeman, Edward Monroe, 1875-. Saint Paul, Minn.
RMRDE4H8–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 111 favorable. Then it shows itself to be a spore-case and forms internally numerous swimming spores, which escape and spread the disease. Some of the downy mildews, however, have learned still more thoroughly the terrestrial habit and have al- most entirely forgotten the ways of aquatic fungi. In these the spore-like body really acts as a spore, grows out directly into a thread and does not develop swimming spores at all, although in some forms it starts out as though it were going to form them and then abandons the attempt
RMPG4EKF–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 355 Among these molds the bkie (or green) mold is perhaps the most common. (See Chapter IX.) So common are the spores of these fungi in the atmosphere that one can find them at all times of the year, often in great abundance, everywhere. An- other common soft-rot of fruits is found in certain kinds of black mold. (See Chapter VIII.) The effect of these rots is a rapid softening of the affected parts of the fruit and, as the fungus spreads, the fruit is finally entirely softened and rendered worthless. The fungi gain entrance
RMME7T28–. Die Mittel zur Bekämpfung der Pflanzenkrankheiten . 2lbb. 26. ©tteubüje mit febernber SRcinigung^nabct.
RMRG41DW–. California plant diseases. Plant diseases. Fig. 9.—Shot-hole of almond (Cercospora circumscissa).. Fig. 10.—Almond rust (Puccinia pruni),. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Smith, Ralph E. (Ralph Eliot), 1874-1953; Smith, Elizabeth H. (Elizabeth Hight), 1877-1933. Berkeley, Cal. : Agricultural Experiment Station
RMPG4FAD–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 187 dung-dwelling habits. They may exist as timber rots but are seldom if ever abundant enough to cause serious damage. <Figs. 13, 81.) Carrion fungi {Phallineas). More unrecognizable still as puff-ball relatives are the car- rion fungi. In the very early stages of the fruiting body, however, this relationship be- comes somewhat clear. The mycelium usually forms whit- ish strands and upon these strands arise the fruiting bod- ies as small spheres or pear- shaped objects and as they in- crease in size look superficial- ly
![. Drawn by] U- ^- ^orer Fig. 23 Metarrhizium anisoplioe Sorok Septohasidium extend over whole colonies, spreading over the surface of leaves or enveloping leaves or branches. An undescribed Empusa species appears to be fairly common on Coccus viridis, the common green scale, developing within the body so that its victims merely look dry and brown. Aspergillus flavus is very common on Pseudococcus calceolarice, the sugar- cane mealy bug ; VerticilUum heterocladum has been found on citrus white fly in a Barbados gully. Aphides are frequently found covered with a Hormodendron sp. which has been e Stock Photo](https://c8.alamy.com/comp/MCNDP4/drawn-by-u-orer-fig-23-metarrhizium-anisoplioe-sorok-septohasidium-extend-over-whole-colonies-spreading-over-the-surface-of-leaves-or-enveloping-leaves-or-branches-an-undescribed-empusa-species-appears-to-be-fairly-common-on-coccus-viridis-the-common-green-scale-developing-within-the-body-so-that-its-victims-merely-look-dry-and-brown-aspergillus-flavus-is-very-common-on-pseudococcus-calceolarice-the-sugar-cane-mealy-bug-verticiluum-heterocladum-has-been-found-on-citrus-white-fly-in-a-barbados-gully-aphides-are-frequently-found-covered-with-a-hormodendron-sp-which-has-been-e-MCNDP4.jpg ". Drawn by] U- ^- ^orer Fig. 23 Metarrhizium anisoplioe Sorok Septohasidium extend over whole colonies, spreading over the surface of leaves or enveloping leaves or branches. An undescribed Empusa species appears to be fairly common on Coccus viridis, the common green scale, developing within the body so that its victims merely look dry and brown. Aspergillus flavus is very common on Pseudococcus calceolarice, the sugar- cane mealy bug ; VerticilUum heterocladum has been found on citrus white fly in a Barbados gully. Aphides are frequently found covered with a Hormodendron sp. which has been e Stock Photo")
RMMCNDP4–. Drawn by] U- ^- ^orer Fig. 23 Metarrhizium anisoplioe Sorok Septohasidium extend over whole colonies, spreading over the surface of leaves or enveloping leaves or branches. An undescribed Empusa species appears to be fairly common on Coccus viridis, the common green scale, developing within the body so that its victims merely look dry and brown. Aspergillus flavus is very common on Pseudococcus calceolarice, the sugar- cane mealy bug ; VerticilUum heterocladum has been found on citrus white fly in a Barbados gully. Aphides are frequently found covered with a Hormodendron sp. which has been e
RMRG33G7–. California plant diseases. Plant diseases. 1128 UNIVERSITY OF CALIFORNIA—EXPERIMENT STATION. time. It has even been found that the most healthy, green leaves, if picked from the tree and placed in a moist chamber, soon become cov- ered with this wither-tip fungus. Trees suffering from gum disease, gophers, drouth or any other influence which causes them to lose their vitality and begin to weaken and die back in the branches soon develop an abundance of this organism. It is also likely that citrus insects, like the red spider and any other which punctures or injures the fruit, may promote the
RMPG45CT–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 59 the rest of the plant. Then arise the carbuncle-like swellings of the leaves. If a kernel of the cob is attacked it increases perhaps tenfold in size. During this increase of size the fungus is also gaining strength and keeping pace with its partner plant-part, and when the proper moment has arrived for the formation of its spores it proceeds rapidly and utilizes all the extra food stored up by the swollen host plant-parts and de- stroys the latter rapidly. Such a parasite stimulates its host to unusual activity for a lon
RMRDE4G5–. Minnesota plant diseases. Plant diseases. Fig. 47. — An insect mold. (Fly chol- era fungus.) 1. A cluster of threads with spores cling- ing to hairs on the insect's body. 2. Fungus threads from the fat-body of an insect. 3. Spore -bearing threads, highly m a g n i fi e d. 4. Above, a single spore; below, germinating spore, forming a sec- ondary spore. Highly magnified. After Brefeld. are sent into the threads of the host plant where they obtain nourishment for the para- site. They are also found on certain of the blue-mold group of fungi. Insect molds {EntomophthorinecE). Of all the algal fu
RMPG45DN–. Minnesota plant diseases. Plant diseases. 34 Minnesota Plant Diseases. very much lower temperatures. Very many spores of our fungi must be able to endure forty degrees below zero Fahr. to pass the winter. In fact many can undergo still lower temper- atures and survive. Conditions of spore germination. When a spore is placed under proper conditions of moisture, temperature and of other factors, it germinates, i. e., grows out into a fine thread which, if conditions remain favorable, develops directly into the fun- gus mycelium. By far the largest majority of fungus spores are capable of germi
RMME831H–. Die krankheiten der pflanzen, ein handbuch fur land-und forstwirte, gartner, gartenfreunde und botaniker . gig. 5fi. ©allen Uon Anlax Hieracii an llioracium murorum. A ©allen im 3^1ütonftanbe. B ©alle unmittelbar über bem SKur^elftocf an ©teile be§ (Stengels, nur ein 2üurjelblatt ift üoll= fommen eutmidelt. C ©urc^fdjuitt burd) bie ©alle, jeigt hal fdjtuanimige ©emebe, in meld)em jerftrent üiele rnube, l)ol3ige, üS)z Saröenfammern fid) befiiiben. ') S3ergl.3;^oma§, «ßerlibr. b. bo^ 33er. SSranbeuburg 1888, pag. XXIV
![. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 379 infects a rose plant. The mycelium, thus produced, soon com- mences the formation of summer spores. It is the abundance of the latter spores, and the rapid infection by their means, that makes the rose mildew dangerous. Flowers of sulphur dusted on the leaves of the plant are chief- ly employed to prevent the germination of the summer spores. The mycelium is also killed by the sulphur treatment. "For greenhouse treatment paint hot water pipes with mixture of sul-. FlG. 204.—Powdery mildew of roses, showing the super Stock Photo](https://c8.alamy.com/comp/RDE32H/minnesota-plant-diseases-plant-diseases-minnesota-plant-diseases-379-infects-a-rose-plant-the-mycelium-thus-produced-soon-com-mences-the-formation-of-summer-spores-it-is-the-abundance-of-the-latter-spores-and-the-rapid-infection-by-their-means-that-makes-the-rose-mildew-dangerous-flowers-of-sulphur-dusted-on-the-leaves-of-the-plant-are-chief-ly-employed-to-prevent-the-germination-of-the-summer-spores-the-mycelium-is-also-killed-by-the-sulphur-treatment-quotfor-greenhouse-treatment-paint-hot-water-pipes-with-mixture-of-sul-flg-204powdery-mildew-of-roses-showing-the-super-RDE32H.jpg ". Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 379 infects a rose plant. The mycelium, thus produced, soon com- mences the formation of summer spores. It is the abundance of the latter spores, and the rapid infection by their means, that makes the rose mildew dangerous. Flowers of sulphur dusted on the leaves of the plant are chief- ly employed to prevent the germination of the summer spores. The mycelium is also killed by the sulphur treatment. "For greenhouse treatment paint hot water pipes with mixture of sul-. FlG. 204.—Powdery mildew of roses, showing the super Stock Photo")
RMRDE32H–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 379 infects a rose plant. The mycelium, thus produced, soon com- mences the formation of summer spores. It is the abundance of the latter spores, and the rapid infection by their means, that makes the rose mildew dangerous. Flowers of sulphur dusted on the leaves of the plant are chief- ly employed to prevent the germination of the summer spores. The mycelium is also killed by the sulphur treatment. "For greenhouse treatment paint hot water pipes with mixture of sul-. FlG. 204.—Powdery mildew of roses, showing the super
RMPG4EP7–. Minnesota plant diseases. Plant diseases. 325 Minnesota Plant Diseases. >ft<f ife; «' The leaf blight of celery (Cercospora apii Fr.). The fungus, causing this disease is a loose spored, imperfect fungus. It causes the formation of red- dish to brownish spots on the leaves, which may spread and increase in size until the leaf is seriously injured. The fungus thrives well on plants in dry || situations and is particularly ! effective against young plants. When badly affected the leaf turns yellow and finally brown. Spots may also appear on the stem. The spores arise from upright fungus-
RMME8389–. Die krankheiten der pflanzen, ein handbuch fur land-und forstwirte, gartner, gartenfreunde und botaniker . 82 I. *4l&f(f)nttt: Äran!f)eiten u. Se[(!^äbiöung., melcE)e b. Siere oerurfad)! trerben ®ie Söintergeneration ftimmt mit berjcnigen ber ^^ritflicge qani überein unb fotttmt oft mit biefer jufammen oor: c§ finb i^anj al)nlic()e 5)^abeu unb ^puppen mie bei jener, vodäje an bcn jungen ^flän3d)en be§ SBintcrgetreibeö jiuifd)en ben 23Iattfd)eiben leben unb biejelben SBernnberungen unb S^x-- ftörungen mie bei ber gritfliege «eranlaffen. SBenn bie getöteten ^flanjen öcrfaulen, fo fommen bi
![. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1059 managed, there is no reason why agriculture and mining should not both be carried on to mutual advantage and without antagonism. The specific effects of smelter fumes upon vegetation can not be stated or described in such a manner as to make their identification absolutely certain. In a general way it may be said that such effects consist in a spotting or burning of the leaves, and we may also say that there can be no injury without such spotting or burning. In other words, there is no such thing as an i Stock Photo](https://c8.alamy.com/comp/RG41NN/california-plant-diseases-plant-diseases-bulletin-218-california-plant-diseases-1059-managed-there-is-no-reason-why-agriculture-and-mining-should-not-both-be-carried-on-to-mutual-advantage-and-without-antagonism-the-specific-effects-of-smelter-fumes-upon-vegetation-can-not-be-stated-or-described-in-such-a-manner-as-to-make-their-identification-absolutely-certain-in-a-general-way-it-may-be-said-that-such-effects-consist-in-a-spotting-or-burning-of-the-leaves-and-we-may-also-say-that-there-can-be-no-injury-without-such-spotting-or-burning-in-other-words-there-is-no-such-thing-as-an-i-RG41NN.jpg ". California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1059 managed, there is no reason why agriculture and mining should not both be carried on to mutual advantage and without antagonism. The specific effects of smelter fumes upon vegetation can not be stated or described in such a manner as to make their identification absolutely certain. In a general way it may be said that such effects consist in a spotting or burning of the leaves, and we may also say that there can be no injury without such spotting or burning. In other words, there is no such thing as an i Stock Photo")
RMRG41NN–. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1059 managed, there is no reason why agriculture and mining should not both be carried on to mutual advantage and without antagonism. The specific effects of smelter fumes upon vegetation can not be stated or described in such a manner as to make their identification absolutely certain. In a general way it may be said that such effects consist in a spotting or burning of the leaves, and we may also say that there can be no injury without such spotting or burning. In other words, there is no such thing as an i
RMPG4F0M–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 269 3 S. if 5'W tar. In this condition it rests over until spring, when the cup fruiting-bodies are produced. Several cups spring from each spot and each cup is lined, on its inner surface, with a pal- isade of sacs containing eight spores each. Between the sacs. ⦠â¢â ^^t- * § '«â .' are numerous sterile fungus threads. Spotted leaves should be collected in the fall and burned to prevent a spread of the dis- ease in the following spring. The formation of the sac spores is thereby effectively prevented.. Please note that
RMMCP8JY–. Pholo Fig. 97 [Dept. of Agri., Jamaica BONNYGATE DISEASE OF BANANA Inset 1. Conidial Fructifications on Head of Bulb Inset 2. Conidial Fructifications in Pure Culture ON Sterilized Potato
![. Minnesota plant diseases. Plant diseases. Fic. 194.—Black rot of apple. After Clinton. fruit, when attacked, turns at first a reddish brown but later be- comes blaclf. On attacked portions of the tree the fungus pro- duces its spores. It is an "imperfect" fungus and produces spores in small capsules, which appear on the leaf, twig or fruit spots as tiny black warts. These open to the exterior by minute pores through which the spores, which are cut off of threads lin- ing the interior of the capsule, are thrown out. The treatment which is used against the apple scab is usually recom Stock Photo](https://c8.alamy.com/comp/RDE33G/minnesota-plant-diseases-plant-diseases-fic-194black-rot-of-apple-after-clinton-fruit-when-attacked-turns-at-first-a-reddish-brown-but-later-be-comes-blaclf-on-attacked-portions-of-the-tree-the-fungus-pro-duces-its-spores-it-is-an-quotimperfectquot-fungus-and-produces-spores-in-small-capsules-which-appear-on-the-leaf-twig-or-fruit-spots-as-tiny-black-warts-these-open-to-the-exterior-by-minute-pores-through-which-the-spores-which-are-cut-off-of-threads-lin-ing-the-interior-of-the-capsule-are-thrown-out-the-treatment-which-is-used-against-the-apple-scab-is-usually-recom-RDE33G.jpg ". Minnesota plant diseases. Plant diseases. Fic. 194.—Black rot of apple. After Clinton. fruit, when attacked, turns at first a reddish brown but later be- comes blaclf. On attacked portions of the tree the fungus pro- duces its spores. It is an "imperfect" fungus and produces spores in small capsules, which appear on the leaf, twig or fruit spots as tiny black warts. These open to the exterior by minute pores through which the spores, which are cut off of threads lin- ing the interior of the capsule, are thrown out. The treatment which is used against the apple scab is usually recom Stock Photo")
RMRDE33G–. Minnesota plant diseases. Plant diseases. Fic. 194.—Black rot of apple. After Clinton. fruit, when attacked, turns at first a reddish brown but later be- comes blaclf. On attacked portions of the tree the fungus pro- duces its spores. It is an "imperfect" fungus and produces spores in small capsules, which appear on the leaf, twig or fruit spots as tiny black warts. These open to the exterior by minute pores through which the spores, which are cut off of threads lin- ing the interior of the capsule, are thrown out. The treatment which is used against the apple scab is usually recom
RMPG4FK6–. Minnesota plant diseases. Plant diseases. Fig. 47. — An insect mold. (Fly chol- era fungus.) 1. A cluster of threads with spores cling- ing to hairs on the insect's body. 2. Fungus threads from the fat-body of an insect. 3. Spore -bearing threads, highly m a g n i fi e d. 4. Above, a single spore; below, germinating spore, forming a sec- ondary spore. Highly magnified. After Brefeld. are sent into the threads of the host plant where they obtain nourishment for the para- site. They are also found on certain of the blue-mold group of fungi. Insect molds {EntomophthorinecE). Of all the algal fu
![. Minnesota plant diseases. Plant diseases. 214 Minnesota Plant Diseases. are eaten by man or used in the manufacture of wine. In the first place spraying at the time of maturity of the fruit is seldom if ever necessary. In the case of earlier sprays it has been shown that no danger exists to man from the eating of such fruits. It has been estimated that of grapes sprayed with bordeaux in the usual way an adult may eat "three hundred to five hundred pounds per day without ill eiTects of copper." Even in the case. Fic. 105.—A simple type of barrel pump used in tlie horticultural depar Stock Photo](https://c8.alamy.com/comp/RDEX80/minnesota-plant-diseases-plant-diseases-214-minnesota-plant-diseases-are-eaten-by-man-or-used-in-the-manufacture-of-wine-in-the-first-place-spraying-at-the-time-of-maturity-of-the-fruit-is-seldom-if-ever-necessary-in-the-case-of-earlier-sprays-it-has-been-shown-that-no-danger-exists-to-man-from-the-eating-of-such-fruits-it-has-been-estimated-that-of-grapes-sprayed-with-bordeaux-in-the-usual-way-an-adult-may-eat-quotthree-hundred-to-five-hundred-pounds-per-day-without-ill-eitects-of-copperquot-even-in-the-case-fic-105a-simple-type-of-barrel-pump-used-in-tlie-horticultural-depar-RDEX80.jpg ". Minnesota plant diseases. Plant diseases. 214 Minnesota Plant Diseases. are eaten by man or used in the manufacture of wine. In the first place spraying at the time of maturity of the fruit is seldom if ever necessary. In the case of earlier sprays it has been shown that no danger exists to man from the eating of such fruits. It has been estimated that of grapes sprayed with bordeaux in the usual way an adult may eat "three hundred to five hundred pounds per day without ill eiTects of copper." Even in the case. Fic. 105.—A simple type of barrel pump used in tlie horticultural depar Stock Photo")
RMRDEX80–. Minnesota plant diseases. Plant diseases. 214 Minnesota Plant Diseases. are eaten by man or used in the manufacture of wine. In the first place spraying at the time of maturity of the fruit is seldom if ever necessary. In the case of earlier sprays it has been shown that no danger exists to man from the eating of such fruits. It has been estimated that of grapes sprayed with bordeaux in the usual way an adult may eat "three hundred to five hundred pounds per day without ill eiTects of copper." Even in the case. Fic. 105.—A simple type of barrel pump used in tlie horticultural depar
RMPG45F0–. Minnesota plant diseases. Plant diseases. 14 Minnesota Plant Diseases. be made by the plant to produce reproductive bodies and then one grand effort is made. A single mushroom may produce mil- lions of spores and shed them all in a single day. Not all para- sites, however, are small; but in some cases, as in the wound parasites, they may produce large shelf-like fruiting bodies. These plants are often saprophytic at first, becoming parasitic later. Storage organs. Most fungi use the food materials which have been absorbed from their various sources, for the immedi- ate production of fruiting
RMME7T5K–. Die Mittel zur Bekämpfung der Pflanzenkrankheiten . abb. 18. ©ammeltric^ttr fUr Onfeften.
RMRDEWPC–. Minnesota plant diseases. Plant diseases. Fig. 134.—Powdery mildew of willow leaf (Uncinula salicis). The minute black spots are the spore-sac-capsules and under these can be seen the whitish mycelial coat of threads. Original. The sac-capsules are large compared with most other Min- nesota powdery mildews. They are black in color and have a ring of numerous, colorless, thread-appendages, each of which terminates in a single-pointed hook, in a manner similar to that of the vine powdery mildew. Each capsule contains at least several sacs, in each of which are found eight spores. The summer sp
RMPG4EJH–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 569 celium is at work witliin the leaf. On the under surface these patches show at first a faint light grey shimmer, which later de- velops into the grey mold-like growth of the fully developed patches of the summer spores. These patches spread rapidly and the whole leaf, in the course of a few weeks, dies, becomes brittle and useless as a starch-making organ and dangerous as a pro-. FlG. 197.—Downy mildew of grape. On the right is a healthy bunch of grapes; on the left a bunch badly diseased. Original. ducer of the fungus s
![. Fig. 33. " Buckeye " rot of tomato fruits. Stock Photo](https://c8.alamy.com/comp/MCK86K/fig-33-quot-buckeye-quot-rot-of-tomato-fruits-MCK86K.jpg ". Fig. 33. " Buckeye " rot of tomato fruits. Stock Photo")
![. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1123 tracted in the tank of the washing machine where the water becomes extremely infectious from the presence of spores brought in with the orchard soil and dust. This is easily controlled by disinfection of the wash water with copper sulphate. See Bulletin 190, California Experiment Station. Cottony Mold—White Rot (Sclerotinia libertiana). Figure 51. Causes decay of the fruit in the curing house with the production of an abundant white mold spreading over the lemons. In this mold. Fig. 51.—Cottony mold of l Stock Photo](https://c8.alamy.com/comp/RG33KP/california-plant-diseases-plant-diseases-bulletin-218-california-plant-diseases-1123-tracted-in-the-tank-of-the-washing-machine-where-the-water-becomes-extremely-infectious-from-the-presence-of-spores-brought-in-with-the-orchard-soil-and-dust-this-is-easily-controlled-by-disinfection-of-the-wash-water-with-copper-sulphate-see-bulletin-190-california-experiment-station-cottony-moldwhite-rot-sclerotinia-libertiana-figure-51-causes-decay-of-the-fruit-in-the-curing-house-with-the-production-of-an-abundant-white-mold-spreading-over-the-lemons-in-this-mold-fig-51cottony-mold-of-l-RG33KP.jpg ". California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1123 tracted in the tank of the washing machine where the water becomes extremely infectious from the presence of spores brought in with the orchard soil and dust. This is easily controlled by disinfection of the wash water with copper sulphate. See Bulletin 190, California Experiment Station. Cottony Mold—White Rot (Sclerotinia libertiana). Figure 51. Causes decay of the fruit in the curing house with the production of an abundant white mold spreading over the lemons. In this mold. Fig. 51.—Cottony mold of l Stock Photo")
RMRG33KP–. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1123 tracted in the tank of the washing machine where the water becomes extremely infectious from the presence of spores brought in with the orchard soil and dust. This is easily controlled by disinfection of the wash water with copper sulphate. See Bulletin 190, California Experiment Station. Cottony Mold—White Rot (Sclerotinia libertiana). Figure 51. Causes decay of the fruit in the curing house with the production of an abundant white mold spreading over the lemons. In this mold. Fig. 51.—Cottony mold of l
RMPG4FGJ–. Minnesota plant diseases. Plant diseases. 140 Minnesota Plant Diseases. plants are very minute and can usually only be clearly seen un- der a compound microscope. On the one hand these fungi show relationships with the sphere fungi, which are undoubted- ly their closest fungus relatives. They form sacs containing spores and these are contained in sac-capsules. The structure of the sacrcapsule is not however very similar to those of the sphere fungi. The cases are often long pear-shaped and the sacs are produced over a considerable period of time and do not all mature at once. Moreover, the s
RMME843X–. Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker . 5ig- 37. jTic 9icblauö. A bünne JRebcmrmriel mit 9b^ofitäten an ben Sauiv miirjedi. B eine 9Jobofität ucrgröBert, man fiel)t in ber 53icgung bie Saufe. <' eine gieblaus uou ber ®ur',e(, ftärfer nergröfeert. 3kc^ yjörblingcr. bicf)t gebräugt au ben 2öurjeln fi^en, erfdjeinen fie ale gelbe y^tdt. 'DJfau finbet fie an alten, birfeu ähirjcln bi§ ju ben jüngfleu bünnen S^ürjeUhen. Sin bicfereu 21Hirieln erzeugen fie feine 5Beränberuiui, ober t<o ent|tet)t l)bd)ften5 eine 2lUicl)eruug
![. Minnesota plant diseases. Plant diseases. Chapter XIX. Diseases of Garden Crops. Orange- or red-rust of raspberries and blackberries [Gyw- noconia interstitialis (Schlcct.) Lagh.]. This rust is chiefly known on account of the destruction occasioned by the cluster-cup stages, on the raspberries, blackberries and their allies. The cluster-cup stage differs from that of most of our common rusts by the absence of a cluster-cup wall, so that the chains of spores are spread out on the surface of the leaves. These spores are pro- duced in great numbers in early summer and late spring and form what Stock Photo](https://c8.alamy.com/comp/RDE3A9/minnesota-plant-diseases-plant-diseases-chapter-xix-diseases-of-garden-crops-orange-or-red-rust-of-raspberries-and-blackberries-gyw-noconia-interstitialis-schlcct-lagh-this-rust-is-chiefly-known-on-account-of-the-destruction-occasioned-by-the-cluster-cup-stages-on-the-raspberries-blackberries-and-their-allies-the-cluster-cup-stage-differs-from-that-of-most-of-our-common-rusts-by-the-absence-of-a-cluster-cup-wall-so-that-the-chains-of-spores-are-spread-out-on-the-surface-of-the-leaves-these-spores-are-pro-duced-in-great-numbers-in-early-summer-and-late-spring-and-form-what-RDE3A9.jpg ". Minnesota plant diseases. Plant diseases. Chapter XIX. Diseases of Garden Crops. Orange- or red-rust of raspberries and blackberries [Gyw- noconia interstitialis (Schlcct.) Lagh.]. This rust is chiefly known on account of the destruction occasioned by the cluster-cup stages, on the raspberries, blackberries and their allies. The cluster-cup stage differs from that of most of our common rusts by the absence of a cluster-cup wall, so that the chains of spores are spread out on the surface of the leaves. These spores are pro- duced in great numbers in early summer and late spring and form what Stock Photo")
RMRDE3A9–. Minnesota plant diseases. Plant diseases. Chapter XIX. Diseases of Garden Crops. Orange- or red-rust of raspberries and blackberries [Gyw- noconia interstitialis (Schlcct.) Lagh.]. This rust is chiefly known on account of the destruction occasioned by the cluster-cup stages, on the raspberries, blackberries and their allies. The cluster-cup stage differs from that of most of our common rusts by the absence of a cluster-cup wall, so that the chains of spores are spread out on the surface of the leaves. These spores are pro- duced in great numbers in early summer and late spring and form what
RMPG4FJR–. Minnesota plant diseases. Plant diseases. Fig. 49.—Plum-pocket fungus and loose-weft fungus. 1. A loose wefted collection of spore sacs, which is surrounded by barbed threads. A loose-weft fungus. 2. A small group of threads from 1, bearing a number of sacs. 3. Same as 2, showing a single sac with its sac-spores. 4. Plum-pocket fungus. Shows the spore-sacs of a plum- pocket fungus arranged in a palisade on the surface of the pocketed plum; c the cells of the plum; m fungus threads and h the fungus spore sacs. All highly magnified. 1, 2, 3 after Sachs; 4 after DeBary. poplars and cottonwoods
RMRDE4W8–. Minnesota plant diseases. Plant diseases. MINNESOTA PLANT DISEASES by E. M. Freeman, Ph. D. Assistant Professor of Botany University of Minnesota. Report of the Survey Botanical Series V Saint Paul, Minnesota, July ^i, I g,o$^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Freeman, Edward Monroe, 1875-. Saint Paul, Minn.
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