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Canker on pear tree Stock Photos and Images
RF2HJFR4Y–Apple leaves damaged by Choreutis pariana Apple Leaf Skeletonizer. The larvae (caterpillars) feed on fruit trees: apple, pear and cherry in orchards
RMKK76F1–Dead shoot caused by a disease lesion of pear canker, Neonectria ditissima, lower on the branch, Berkshire, June
RMMP3N5B–Avocado tree leaves covered with holes, young growing plant spot disease, Asuncion, Paraguay
RM2KG1TJW–Pear canker or nectria canker (Neonectria ditissima) lesion cause necrosis on peripheral wood and leaves, Berkshire, September
RMPC38DX–Dead shoot caused by a disease lesion of pear canker, Neonectria ditissima, lower on the branch, Berkshire, June
RMRM8NE9–. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). Fig. 67.—Growing twig of apple blighted by artificial inoculalion ivitli bacteria from active canker on limb of apple tree. Fig. 66.—Canker on pear tree result- ing from inoculation iviih bacteria from active canker on apple tree.. 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.. Corne
![Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] DIDYRIELLA 209 DIDYMELLA (Sacc.) Perithecia immersed, membranaceous, asci 4-8-spored, paraphyses present; spores elongated, i-septate, hyaline. Differs from Sphaerella in having paraphyses. Orange-tree canker {Didymella ciiri., Noack) forms long canker-like v/ounds with thickened margins on the branches of orange-trees in Brazil. The first symptom of disease is the Fig. 59.— VenturiiZ pirina. i, conidial form of fungus on pear leaf; 2, conidial form of fungus on pear, causing Stock Photo](https://c8.alamy.com/comp/T1HJR6/diseases-of-cultivated-plants-and-diseases-of-cultivated-plants-and-trees-diseasesofcultiv00massuoft-year-1910-didyriella-209-didymella-sacc-perithecia-immersed-membranaceous-asci-4-8-spored-paraphyses-present-spores-elongated-i-septate-hyaline-differs-from-sphaerella-in-having-paraphyses-orange-tree-canker-didymella-ciiri-noack-forms-long-canker-like-vounds-with-thickened-margins-on-the-branches-of-orange-trees-in-brazil-the-first-symptom-of-disease-is-the-fig-59-venturiiz-pirina-i-conidial-form-of-fungus-on-pear-leaf-2-conidial-form-of-fungus-on-pear-causing-T1HJR6.jpg "Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] DIDYRIELLA 209 DIDYMELLA (Sacc.) Perithecia immersed, membranaceous, asci 4-8-spored, paraphyses present; spores elongated, i-septate, hyaline. Differs from Sphaerella in having paraphyses. Orange-tree canker {Didymella ciiri., Noack) forms long canker-like v/ounds with thickened margins on the branches of orange-trees in Brazil. The first symptom of disease is the Fig. 59.— VenturiiZ pirina. i, conidial form of fungus on pear leaf; 2, conidial form of fungus on pear, causing Stock Photo")
RMT1HJR6–Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] DIDYRIELLA 209 DIDYMELLA (Sacc.) Perithecia immersed, membranaceous, asci 4-8-spored, paraphyses present; spores elongated, i-septate, hyaline. Differs from Sphaerella in having paraphyses. Orange-tree canker {Didymella ciiri., Noack) forms long canker-like v/ounds with thickened margins on the branches of orange-trees in Brazil. The first symptom of disease is the Fig. 59.— VenturiiZ pirina. i, conidial form of fungus on pear leaf; 2, conidial form of fungus on pear, causing
RF2HJFR4T–Apple leaves damaged by Choreutis pariana Apple Leaf Skeletonizer. The larvae (caterpillars) feed on fruit trees: apple, pear and cherry in orchards
RMMP3N90–Avocado tree leaves covered with holes, young growing plant spot disease, Asuncion, Paraguay
RM2KG1THW–Pear canker or nectria canker (Neonectria ditissima) lesion cause necrosis on peripheral wood and leaves, Berkshire, September
RMF7XFCT–Branch dieback on pear caused by a canker, Nectria galligena, at base of damage, Berkshire, England, September
RMF2TP7G–Branch dieback on a pear caused by a canker, Neonectria ditissima, at the base of the damage, Berkshire, September
![. The blight canker of apple trees ... Apples. 10 / / Hsconsin State ^Horticultural Society foliage, remaining pale and gray. Growers often refer to such trees as having "mouse ear" leaves. As the season advances and the cankers spread, the leaves often die and dry up on the. FlG. 7—Canker on pear tree resulting from inoculation with bacteria from active canker on apple tree. Fig.8—Pruned stub canker that has spread down side of limb during early spring of second year. Diseased tissue cleaned away, trsated with corrosive sublimate and painted. Good calluses formed. Canker ceased to s Stock Photo](https://c8.alamy.com/comp/RHJ7FF/the-blight-canker-of-apple-trees-apples-10-hsconsin-state-horticultural-society-foliage-remaining-pale-and-gray-growers-often-refer-to-such-trees-as-having-quotmouse-earquot-leaves-as-the-season-advances-and-the-cankers-spread-the-leaves-often-die-and-dry-up-on-the-flg-7canker-on-pear-tree-resulting-from-inoculation-with-bacteria-from-active-canker-on-apple-tree-fig8pruned-stub-canker-that-has-spread-down-side-of-limb-during-early-spring-of-second-year-diseased-tissue-cleaned-away-trsated-with-corrosive-sublimate-and-painted-good-calluses-formed-canker-ceased-to-s-RHJ7FF.jpg ". The blight canker of apple trees ... Apples. 10 / / Hsconsin State ^Horticultural Society foliage, remaining pale and gray. Growers often refer to such trees as having "mouse ear" leaves. As the season advances and the cankers spread, the leaves often die and dry up on the. FlG. 7—Canker on pear tree resulting from inoculation with bacteria from active canker on apple tree. Fig.8—Pruned stub canker that has spread down side of limb during early spring of second year. Diseased tissue cleaned away, trsated with corrosive sublimate and painted. Good calluses formed. Canker ceased to s Stock Photo")
RMRHJ7FF–. The blight canker of apple trees ... Apples. 10 / / Hsconsin State ^Horticultural Society foliage, remaining pale and gray. Growers often refer to such trees as having "mouse ear" leaves. As the season advances and the cankers spread, the leaves often die and dry up on the. FlG. 7—Canker on pear tree resulting from inoculation with bacteria from active canker on apple tree. Fig.8—Pruned stub canker that has spread down side of limb during early spring of second year. Diseased tissue cleaned away, trsated with corrosive sublimate and painted. Good calluses formed. Canker ceased to s
RMW2D2MY–Nectria pear canker, Neonectria ditissima, lesion and dead brown leaves on a pear branch, Berkshire, June
RF2HJFR4K–Apple leaves damaged by Choreutis pariana Apple Leaf Skeletonizer. The larvae (caterpillars) feed on fruit trees: apple, pear and cherry in orchards
RMMP3N0J–Avocado tree leaves covered with holes, young growing plant spot disease, Asuncion, Paraguay
RMEW3KD3–Common Pear, Pyrus communis, with Cankers, Nectria galligena, and lichens on wood of old tree, Berkshire, England, June
RMRM8NE1–. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). Fig. 67.—Growing twig of apple blighted by artificial inoculalion ivitli bacteria from active canker on limb of apple tree. Fig. 66.—Canker on pear tree result- ing from inoculation iviih bacteria from active canker on apple tree.. Fig. 68.— Blossom and spur blight of apple resulting from artificial ino:u- lation with bacteria from canker on limb of apple tree. Note the small cankers that have formed about the base of the spurs. *. Please note that these
RMW2D2MT–Nectria pear canker, Neonectria ditissima, lesion and dead brown leaves on a pear branch, Berkshire, June
RF2HJFR4R–Apple leaves damaged by Choreutis pariana Apple Leaf Skeletonizer. The larvae (caterpillars) feed on fruit trees: apple, pear and cherry in orchards
RMMP3M5Y–Avocado tree leaves covered with holes, young growing plant spot disease, Asuncion, Paraguay
RM2CDX33K–. Annual report of the Fruit Growers' Association of Ontario, 1902 . ng to black corky spots in July, each with a minute opening in it.Pear Leaf Blister (Phytoptus pyri). 2. The following insects which feed on the leaves of apple (which see) also feed on theleaves of pear. Bed-Humped Apple-Tree Caterpillar (Oedemasia concinna). Fall ^e6-TForw(Hyphantria cunea). Tent Caterpillar (Clisiocampa). Yellow necked Caterpillar (Datana miniatra). Canker Worms (Anisopteryx). Bud Moth (Tmetocera ocellana). Tussock Moth (Orgyia leucostigma). Cecropia Moth (Samia cecropia). June Beetle (Lachnosterna fusca).
RMW2D2MP–Nectria pear canker, Neonectria ditissima, lesion and dead brown leaves on a pear branch, Berkshire, June
RMMP3MF0–Avocado tree leaves covered with holes, young growing plant spot disease, Asuncion, Paraguay
RMRM8N7D–. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). Blight Canker of the Apple Tree. 209 4. Blighted fruit of pear (natural infection). 5. Blighted fruit of apple (natural infection). (Two cultures from widely separated local- ities.) 6. Blighted fruit of apple (artificially infected from canker on apple limb). The pure ctiltures of bacteria from these dif- ferent sources were each carried through 12 differentiating kinds of media (see page 210) and a careftd record of growth, characters and reactions mad
RMW2D2N4–Nectria pear canker, Neonectria ditissima, lesion with living green and dead brown leaves on a pear branch, Berkshire, June
RMRH0Y8W–. Bulletin. Agriculture -- Ontario. 22 INSECTS AFFECTING THE CHERRY. The Cherry is affected by a number of the insects already considered in connection with other fruit-trees. The Pear-tree Slug is quite as abundant on the leaves of the Cherry-trees as on Pear-trees ; the Plum Curculio attacks the fruit, often very severely; the Tent-Caterpillars, Fall Web-worm, Tussock-moth, Canker-worms, Eye-Spotted Bud-moth, Leaf-rollers and Casebearers all devour the foliage; and the scale insects suck the sap and lower the vitality of the trees. In addition to these formidable enemies attention may be dra
RMW2D2ND–Nectria pear canker, Neonectria ditissima, lesion with living green and dead brown leaves on a pear branch, Berkshire, June
![. Common insects affecting fruit-trees [microform]. Insect pests; Fruits; Insectes nuisibles; Fruit. id INSECTS AFFECTING THE CHERRY. The Cherry is affected by a number of the insects already considered (n connection with other fruit-trees. The Pear-tree Slug is quite as abundant on the leaves of the Cherry-trees as on Pear-trees; the Plum Curculio attacks the fruit, often very severely; the Tent-caterpillars, Fall Web-worm, Tussock-moth, Canker-worms, Eyc-spoted Bud-moth, Leaf-rollers and Case-bearers all devour the foliape; and the scale insects suck the sap and lower the vitality of the tre Stock Photo](https://c8.alamy.com/comp/REN4BD/common-insects-affecting-fruit-trees-microform-insect-pests-fruits-insectes-nuisibles-fruit-id-insects-affecting-the-cherry-the-cherry-is-affected-by-a-number-of-the-insects-already-considered-n-connection-with-other-fruit-trees-the-pear-tree-slug-is-quite-as-abundant-on-the-leaves-of-the-cherry-trees-as-on-pear-trees-the-plum-curculio-attacks-the-fruit-often-very-severely-the-tent-caterpillars-fall-web-worm-tussock-moth-canker-worms-eyc-spoted-bud-moth-leaf-rollers-and-case-bearers-all-devour-the-foliape-and-the-scale-insects-suck-the-sap-and-lower-the-vitality-of-the-tre-REN4BD.jpg ". Common insects affecting fruit-trees [microform]. Insect pests; Fruits; Insectes nuisibles; Fruit. id INSECTS AFFECTING THE CHERRY. The Cherry is affected by a number of the insects already considered (n connection with other fruit-trees. The Pear-tree Slug is quite as abundant on the leaves of the Cherry-trees as on Pear-trees; the Plum Curculio attacks the fruit, often very severely; the Tent-caterpillars, Fall Web-worm, Tussock-moth, Canker-worms, Eyc-spoted Bud-moth, Leaf-rollers and Case-bearers all devour the foliape; and the scale insects suck the sap and lower the vitality of the tre Stock Photo")
RMREN4BD–. Common insects affecting fruit-trees [microform]. Insect pests; Fruits; Insectes nuisibles; Fruit. id INSECTS AFFECTING THE CHERRY. The Cherry is affected by a number of the insects already considered (n connection with other fruit-trees. The Pear-tree Slug is quite as abundant on the leaves of the Cherry-trees as on Pear-trees; the Plum Curculio attacks the fruit, often very severely; the Tent-caterpillars, Fall Web-worm, Tussock-moth, Canker-worms, Eyc-spoted Bud-moth, Leaf-rollers and Case-bearers all devour the foliape; and the scale insects suck the sap and lower the vitality of the tre
RMW2D2N7–Nectria pear canker, Neonectria ditissima, lesion with living green and dead brown leaves on a pear branch, Berkshire, June
RMRHJ8R8–. Black rot, leaf spot and canker of pomaceous fruits. Black rot; Leaf spots; Canker (Plant disease); Apples. Bulletin 379 . Plate IX -:**%**. NATURAL CANKERS AND CANKERS PRODUCED BY ARTIFICIAL INOCULATION WITH rHYSALOSPORA CYDONIAE 1. Natural infection on the left; artificial infection on the right. The latter inoculated on July I, [913, with a strain from Twenty Ounce apple bark. Photograph made September 30, 1913 2. Canker on trunk of mature pear tree. Inoculation made July 18, 1910. photograph made September 1, 1911 3. The result of inoculation by use of pyenospores from apple leaves. The
RMW2D2NA–Nectria pear canker, Neonectria ditissima, lesion with living green and dead brown leaves on a pear branch, Berkshire, June
RMEFH2M3–Cankers, Neonectria ditissima, and lichens on the wood of and old pear tree, Berkshire, June
RMRCD959–. Diseases of cultivated plants and trees. Plant diseases; Plants -- Wounds and injuries; Plants, Protection of; Trees -- Diseases and pests. DIDYRIELLA 209 DIDYMELLA (Sacc.) Perithecia immersed, membranaceous, asci 4-8-spored, paraphyses present; spores elongated, i-septate, hyaline. Differs from Sphaerella in having paraphyses. Orange-tree canker {Didymella ciiri., Noack) forms long canker-like v/ounds with thickened margins on the branches of orange-trees in Brazil. The first symptom of disease is the. Fig. 59.— VenturiiZ pirina. i, conidial form of fungus on pear leaf; 2, conidial form of
Search Results for Canker on pear tree Stock Photos and Images (44)
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