Septoria leaf spot Black and White Stock Photos & Images

. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. i8. Celery Disease. a. Septoria leaf spot, b. cross section through leaf to show relationship of fungus to its host, c. spores of Septoria petroselini {a-c after Coons),. 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.. Taubenhaus, Jacob Joseph, 1884-1937. New York : E. P. Dutton Stock Photo

RMPG0GH8–. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. i8. Celery Disease. a. Septoria leaf spot, b. cross section through leaf to show relationship of fungus to its host, c. spores of Septoria petroselini {a-c after Coons),. 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.. Taubenhaus, Jacob Joseph, 1884-1937. New York : E. P. Dutton

. Diseases of truck crops and their control . Vegetables. ^'' ^''"%.. X â s, d. Fig. 69. Celery Diseases. fl. Septoria leaf spot on leaf, h. Septoria leaf spot on leaflet, c. Septoria lesions on celery seed, d. Septoria spots showing pycnidial bodies, e. cross section showing pyncidium and pycnospores of Septoria peiroseltni (a, c, and e after Coons and Levin).. 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.. Taubenhau Stock Photo

RMRDE04T–. Diseases of truck crops and their control . Vegetables. ^'' ^''"%.. X â s, d. Fig. 69. Celery Diseases. fl. Septoria leaf spot on leaf, h. Septoria leaf spot on leaflet, c. Septoria lesions on celery seed, d. Septoria spots showing pycnidial bodies, e. cross section showing pyncidium and pycnospores of Septoria peiroseltni (a, c, and e after Coons and Levin).. 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.. Taubenhau

RMPG4CAF–. Diseases of truck crops and their control . Vegetables. ^'' ^''"%.. X â s, d. Fig. 69. Celery Diseases. fl. Septoria leaf spot on leaf, h. Septoria leaf spot on leaflet, c. Septoria lesions on celery seed, d. Septoria spots showing pycnidial bodies, e. cross section showing pyncidium and pycnospores of Septoria peiroseltni (a, c, and e after Coons and Levin).. 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.. Taubenhau

. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. Fig. 105.—Septoria leaf spot disease of celery, or celery blight. (After Coons, G. N., and Levin, Ezra, Spec. Bull. 77, Mich. Agric. Coll. Exper. Stat., March. 1916. 5P0BES . Fig. 106.—Section through leaf spot of celery blight {Septoria) showing hyphae) in leaf tissue and pycnidium with exuding pycnospores. (After Coons, G. H., and Levin, Ezra, Spec. Bull. 77. Mich. Agric. Coll. Exper. Stat., March, 1916.). Please note that these images are extracted from scanned page images that may h Stock Photo

RMRDE23N–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. Fig. 105.—Septoria leaf spot disease of celery, or celery blight. (After Coons, G. N., and Levin, Ezra, Spec. Bull. 77, Mich. Agric. Coll. Exper. Stat., March. 1916. 5P0BES . Fig. 106.—Section through leaf spot of celery blight {Septoria) showing hyphae) in leaf tissue and pycnidium with exuding pycnospores. (After Coons, G. H., and Levin, Ezra, Spec. Bull. 77. Mich. Agric. Coll. Exper. Stat., March, 1916.). Please note that these images are extracted from scanned page images that may h

RMPG44R7–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. Fig. 105.—Septoria leaf spot disease of celery, or celery blight. (After Coons, G. N., and Levin, Ezra, Spec. Bull. 77, Mich. Agric. Coll. Exper. Stat., March. 1916. 5P0BES . Fig. 106.—Section through leaf spot of celery blight {Septoria) showing hyphae) in leaf tissue and pycnidium with exuding pycnospores. (After Coons, G. H., and Levin, Ezra, Spec. Bull. 77. Mich. Agric. Coll. Exper. Stat., March, 1916.). Please note that these images are extracted from scanned page images that may h

. Diseases of truck crops and their control . Vegetables. Fig. 27. Sweet Potato Diseases. a. Trichoderma rot, 6. Septoria leaf spot, c. soil stain, d. Charcoal rot, e. Texas root rot: notice the center of the hill is dead, while the side shoots are alive as they are supported by the secondary roots formed at the nodes of the vines, /. sweet potato artificially inoculated with Sclerotium Rolfsii, g. net necrosis.. 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 p Stock Photo

RMRDE0J2–. Diseases of truck crops and their control . Vegetables. Fig. 27. Sweet Potato Diseases. a. Trichoderma rot, 6. Septoria leaf spot, c. soil stain, d. Charcoal rot, e. Texas root rot: notice the center of the hill is dead, while the side shoots are alive as they are supported by the secondary roots formed at the nodes of the vines, /. sweet potato artificially inoculated with Sclerotium Rolfsii, g. net necrosis.. 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 p

RMPG4CPT–. Diseases of truck crops and their control . Vegetables. Fig. 27. Sweet Potato Diseases. a. Trichoderma rot, 6. Septoria leaf spot, c. soil stain, d. Charcoal rot, e. Texas root rot: notice the center of the hill is dead, while the side shoots are alive as they are supported by the secondary roots formed at the nodes of the vines, /. sweet potato artificially inoculated with Sclerotium Rolfsii, g. net necrosis.. 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 p

. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. 27. Lettuce Diseases. o. Drop (after Humphrey), b. Septoria leaf spot, c, same as &. but older spots, d. pycnida, e. pycniospores (af- ter Selby).. 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.. Taubenhaus, Jacob Joseph, 1884-1937. New York : E. P. Dutton Stock Photo

RMRDBFJY–. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. 27. Lettuce Diseases. o. Drop (after Humphrey), b. Septoria leaf spot, c, same as &. but older spots, d. pycnida, e. pycniospores (af- ter Selby).. 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.. Taubenhaus, Jacob Joseph, 1884-1937. New York : E. P. Dutton

RMPG0GF7–. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. 27. Lettuce Diseases. o. Drop (after Humphrey), b. Septoria leaf spot, c, same as &. but older spots, d. pycnida, e. pycniospores (af- ter Selby).. 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.. Taubenhaus, Jacob Joseph, 1884-1937. New York : E. P. Dutton

. Florists' review [microform]. Floriculture. 36 The Florists' Review November 30. 1922 weather they become infested with septoria, or leaf-spot, though you sim- ply say that the leaves dry off. In hot, dry weather chysanthemums that are not in a position where they can be sprayed vigorously with a hose in the evening, become what is known among gardeners yJis potbound. A mulch of straw imtiiure, or even hay, if the manure is not available in the summer, is useful; but it must be re- membered that chrysanthemums come from a cool country and are "cool- blooded" plants. In the months o Stock Photo

RMRR8C8G–. Florists' review [microform]. Floriculture. 36 The Florists' Review November 30. 1922 weather they become infested with septoria, or leaf-spot, though you sim- ply say that the leaves dry off. In hot, dry weather chysanthemums that are not in a position where they can be sprayed vigorously with a hose in the evening, become what is known among gardeners yJis potbound. A mulch of straw imtiiure, or even hay, if the manure is not available in the summer, is useful; but it must be re- membered that chrysanthemums come from a cool country and are "cool- blooded" plants. In the months o

$. Diseases of truck crops and their control . Vegetables. S.- '^^15"b«a%s^r". Fig. 66. Tomato Diseases. a. Septoria leaf spot, 6. section through a pycnidium of Sepioria lycopersici (after Levin), c. section through acervulus of Collelotrichum phomoides (after Venus Pool), d. and e. Melanconium rot, /. section through an acervulus of the Melan- conium fungus {d. to f. after Tisdale).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble Stock Photo$

RMPG4CC1–. Diseases of truck crops and their control . Vegetables. S.- '^^15"b«a%s^r". Fig. 66. Tomato Diseases. a. Septoria leaf spot, 6. section through a pycnidium of Sepioria lycopersici (after Levin), c. section through acervulus of Collelotrichum phomoides (after Venus Pool), d. and e. Melanconium rot, /. section through an acervulus of the Melan- conium fungus {d. to f. after Tisdale).. 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

$. Diseases of truck crops and their control . Vegetables. S.- '^^15"b«a%s^r". Fig. 66. Tomato Diseases. a. Septoria leaf spot, 6. section through a pycnidium of Sepioria lycopersici (after Levin), c. section through acervulus of Collelotrichum phomoides (after Venus Pool), d. and e. Melanconium rot, /. section through an acervulus of the Melan- conium fungus {d. to f. after Tisdale).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble Stock Photo$

RMRDE070–. Diseases of truck crops and their control . Vegetables. S.- '^^15"b«a%s^r". Fig. 66. Tomato Diseases. a. Septoria leaf spot, 6. section through a pycnidium of Sepioria lycopersici (after Levin), c. section through acervulus of Collelotrichum phomoides (after Venus Pool), d. and e. Melanconium rot, /. section through an acervulus of the Melan- conium fungus {d. to f. after Tisdale).. 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

. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. 46. Carnation Diseasbs. a. White tip (after Clinton), b-f. carnation rust parasite (after Blodgett, F. H.), g. stigmanose (after Woods), h. Septoria leaf spot (after Potter, M. C), »• pycnidia of Septoria dianthi, j. pow- dery mildew fungus (after Mercer, W. B.).. 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.. Taubenhaus, Ja Stock Photo

RMPG0GAX–. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. 46. Carnation Diseasbs. a. White tip (after Clinton), b-f. carnation rust parasite (after Blodgett, F. H.), g. stigmanose (after Woods), h. Septoria leaf spot (after Potter, M. C), »• pycnidia of Septoria dianthi, j. pow- dery mildew fungus (after Mercer, W. B.).. 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.. Taubenhaus, Ja

. Diseases of economic plants . Plant diseases. 152 DISEASES OF ECONOMIC PLANTS toms to the knot, may be distinguished from it by the absence of wartlike growths upon the surface of affected twigs. As an effective measure all diseased canes may be cut out and burned, cutting well below the diseased area.. FlQ. 64. — Currant leaf spot (septoriose). After Stewart and Eustace. Septoriose 1 [ (Septoria Ribis Desm.) The leaf spots Cercosporose J [ {Cercospora angulata Wint.) The " currant leaf spot" is a term applied to a peculiar spotting of the leaves of both currants and gooseberries. Stock Photo

RMRDE3EY–. Diseases of economic plants . Plant diseases. 152 DISEASES OF ECONOMIC PLANTS toms to the knot, may be distinguished from it by the absence of wartlike growths upon the surface of affected twigs. As an effective measure all diseased canes may be cut out and burned, cutting well below the diseased area.. FlQ. 64. — Currant leaf spot (septoriose). After Stewart and Eustace. Septoriose 1 [ (Septoria Ribis Desm.) The leaf spots Cercosporose J [ {Cercospora angulata Wint.) The " currant leaf spot" is a term applied to a peculiar spotting of the leaves of both currants and gooseberries.

. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. FUNGI IMPERFECTI (dEUTEROMYCETEs) 263. Fig. 105.—Septoria leaf spot disease of celery, or celery blight. (After Coons, G. N., and Levin, Ezra, Spec. Bull. 77, Mich. Agric. Coll. Exper. Stat., March. 1916. 5P0BES . 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.. Harshberger, John W. (John William), 1869-1929. Philadel Stock Photo

RMPG44RA–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. FUNGI IMPERFECTI (dEUTEROMYCETEs) 263. Fig. 105.—Septoria leaf spot disease of celery, or celery blight. (After Coons, G. N., and Levin, Ezra, Spec. Bull. 77, Mich. Agric. Coll. Exper. Stat., March. 1916. 5P0BES . 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.. Harshberger, John W. (John William), 1869-1929. Philadel

. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 358 FUNGOUS DISEASES OF PLANTS XLIX. LEAF SPOT OF THE PEAR Septoria Pyricola Desm. Duggar, B. M. Some Important Pear Diseases. Leaf Spot. Cornell Agl. Exp. Sta. Built. 145: 597-611. figs. 157-163. 1898. The leaf spot of pear is a disease which may be readily dis- tinguished from the leaf blight subsequently described. It occurs throughout the eastern United States as an important fungus, both. Fig. 176. Leaf Spot of Pear in orchards and nurseries. It is probably found throughout No Stock Photo

RMRDJ65K–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 358 FUNGOUS DISEASES OF PLANTS XLIX. LEAF SPOT OF THE PEAR Septoria Pyricola Desm. Duggar, B. M. Some Important Pear Diseases. Leaf Spot. Cornell Agl. Exp. Sta. Built. 145: 597-611. figs. 157-163. 1898. The leaf spot of pear is a disease which may be readily dis- tinguished from the leaf blight subsequently described. It occurs throughout the eastern United States as an important fungus, both. Fig. 176. Leaf Spot of Pear in orchards and nurseries. It is probably found throughout No

RMPG4EX9–. Diseases of economic plants . Plant diseases. 152 DISEASES OF ECONOMIC PLANTS toms to the knot, may be distinguished from it by the absence of wartlike growths upon the surface of affected twigs. As an effective measure all diseased canes may be cut out and burned, cutting well below the diseased area.. FlQ. 64. — Currant leaf spot (septoriose). After Stewart and Eustace. Septoriose 1 [ (Septoria Ribis Desm.) The leaf spots Cercosporose J [ {Cercospora angulata Wint.) The " currant leaf spot" is a term applied to a peculiar spotting of the leaves of both currants and gooseberries.

. How to grow cut flowers. A practical treatise on the cultivation of the rose, carnation, chrysanthemum, voilet, and other winter flowering plants. Also greenhouse construction ... Floriculture; Greenhouses. Diseases of the Carnation. 173 These precautionary measures it is well to adopt if there is the least suspicion of the presence of the disease. If it should appear, avoid using water on the foliage save in the distribution of the solu- tion, and remove and burn all afl'ected plants at once. The other diseases to which the carnation is subject are: Leaf spot (Septoria), as shown in Fig 35. Stock Photo

RMRDPP1E–. How to grow cut flowers. A practical treatise on the cultivation of the rose, carnation, chrysanthemum, voilet, and other winter flowering plants. Also greenhouse construction ... Floriculture; Greenhouses. Diseases of the Carnation. 173 These precautionary measures it is well to adopt if there is the least suspicion of the presence of the disease. If it should appear, avoid using water on the foliage save in the distribution of the solu- tion, and remove and burn all afl'ected plants at once. The other diseases to which the carnation is subject are: Leaf spot (Septoria), as shown in Fig 35.

RMPG3NWW–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 358 FUNGOUS DISEASES OF PLANTS XLIX. LEAF SPOT OF THE PEAR Septoria Pyricola Desm. Duggar, B. M. Some Important Pear Diseases. Leaf Spot. Cornell Agl. Exp. Sta. Built. 145: 597-611. figs. 157-163. 1898. The leaf spot of pear is a disease which may be readily dis- tinguished from the leaf blight subsequently described. It occurs throughout the eastern United States as an important fungus, both. Fig. 176. Leaf Spot of Pear in orchards and nurseries. It is probably found throughout No

. Diseases of economic plants . Plant diseases. 108 DISEASES OF ECONOMIC PLANTS the buds are unfolding, first using an 8-10-50 mixture; second a 5-7-50 mixture. Leaf spot {Septoria piricola Desm.). — The leaf spot, while rarely completely destruc- tive to foliage or crop, does interfere with the general pro- ductiveness and health of the tree by diminishing its green surface and sometimes by caus- ing defoliation. It is known over a wide range. The leaf spot may be distin- guished from the scab and the blight by the fact that the dis- eased area is rather sharply defined and characteristically Stock Photo

RMRDEWYY–. Diseases of economic plants . Plant diseases. 108 DISEASES OF ECONOMIC PLANTS the buds are unfolding, first using an 8-10-50 mixture; second a 5-7-50 mixture. Leaf spot {Septoria piricola Desm.). — The leaf spot, while rarely completely destruc- tive to foliage or crop, does interfere with the general pro- ductiveness and health of the tree by diminishing its green surface and sometimes by caus- ing defoliation. It is known over a wide range. The leaf spot may be distin- guished from the scab and the blight by the fact that the dis- eased area is rather sharply defined and characteristically

RMPG4F33–. Diseases of economic plants . Plant diseases. 108 DISEASES OF ECONOMIC PLANTS the buds are unfolding, first using an 8-10-50 mixture; second a 5-7-50 mixture. Leaf spot {Septoria piricola Desm.). — The leaf spot, while rarely completely destruc- tive to foliage or crop, does interfere with the general pro- ductiveness and health of the tree by diminishing its green surface and sometimes by caus- ing defoliation. It is known over a wide range. The leaf spot may be distin- guished from the scab and the blight by the fact that the dis- eased area is rather sharply defined and characteristically

. The fungi which cause plant disease . Plant diseases; Fungi. 246 THE FUNGI WHICH CAUSE PLANT DISEASE. FiQ. 180.—M. sentina, Septona stage. Portion of a section through a pear leaf spot, showing e, e, epidermis; p, pali- sade cells sp, spongy parenchyma; o, S. piricola pycnidium, giving out spores, b. After Longyear. M. sentina (Fr.) Schr. Perithecia, 80-110 /i; on dead spots of leaves, the long ostiole erumpent; asci clavate, 60-75 x 11-13 fi, colorless; spores fusiform, curved or straight, 26-33 x Conidia (=Septoria piricola) borne in pycnidia which are similar in size and form to the perit Stock Photo

RMRDDB89–. The fungi which cause plant disease . Plant diseases; Fungi. 246 THE FUNGI WHICH CAUSE PLANT DISEASE. FiQ. 180.—M. sentina, Septona stage. Portion of a section through a pear leaf spot, showing e, e, epidermis; p, pali- sade cells sp, spongy parenchyma; o, S. piricola pycnidium, giving out spores, b. After Longyear. M. sentina (Fr.) Schr. Perithecia, 80-110 /i; on dead spots of leaves, the long ostiole erumpent; asci clavate, 60-75 x 11-13 fi, colorless; spores fusiform, curved or straight, 26-33 x Conidia (=Septoria piricola) borne in pycnidia which are similar in size and form to the perit

RMPG46EM–. The fungi which cause plant disease . Plant diseases; Fungi. 246 THE FUNGI WHICH CAUSE PLANT DISEASE. FiQ. 180.—M. sentina, Septona stage. Portion of a section through a pear leaf spot, showing e, e, epidermis; p, pali- sade cells sp, spongy parenchyma; o, S. piricola pycnidium, giving out spores, b. After Longyear. M. sentina (Fr.) Schr. Perithecia, 80-110 /i; on dead spots of leaves, the long ostiole erumpent; asci clavate, 60-75 x 11-13 fi, colorless; spores fusiform, curved or straight, 26-33 x Conidia (=Septoria piricola) borne in pycnidia which are similar in size and form to the perit

RMRDBFTN–. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. i8. Celery Disease. a. Septoria leaf spot, b. cross section through leaf to show relationship of fungus to its host, c. spores of Septoria petroselini {a-c after Coons),. 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.. Taubenhaus, Jacob Joseph, 1884-1937. New York : E. P. Dutton

RMRDE240–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. FUNGI IMPERFECTI (dEUTEROMYCETEs) 263. Fig. 105.—Septoria leaf spot disease of celery, or celery blight. (After Coons, G. N., and Levin, Ezra, Spec. Bull. 77, Mich. Agric. Coll. Exper. Stat., March. 1916. 5P0BES . 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.. Harshberger, John W. (John William), 1869-1929. Philadel

RMRDBFEG–. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. 46. Carnation Diseasbs. a. White tip (after Clinton), b-f. carnation rust parasite (after Blodgett, F. H.), g. stigmanose (after Woods), h. Septoria leaf spot (after Potter, M. C), »• pycnidia of Septoria dianthi, j. pow- dery mildew fungus (after Mercer, W. B.).. 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.. Taubenhaus, Ja

Septoria leaf spot Black & White Stock Photos

Septoria leaf spot Black & White Stock Photos

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