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Rolfsii Stock Photos and Images
RM2BXC208–Asclepias tuberosa var rolfsii Britton ex Vail Shinners Asclepias tuberosa var rolfsii Britton ex Vail Shinners.
RM2CDAWPB–. Journal of agricultural research . Journal of Agricultural Research Vol. XVIII, No. 3 Recent Studies on Sclcrotiutn rolfsii Sacc. Plate 4
RM2C1D9E4–White mould (Athelia rolfsii) mycelium around the base of a peanut plant, Florida, USA, May
RMPG4EH1–. Diseases of economic plants . Plant diseases. VEGETABLE AND FIELD CROPS 313 weather damp. Often it is still better to begin spraying in the seed bed. Southern blight (Sclerotium Rolfsii Sacc. in litt.).— This is the same disease discussed under pepper. Upon the tomato it is often completely destructive in the south- ernmost states. The first sign is wilting of the terminal portion of the plant, distinguishing this trouble from the fungous wilt, which commences with the lower leaves. For discussion and treatment see pepper. Anthracnose [Colletotri- chum phomoides (Sacc.) Chest.).—-This is chi
![Diseases of truck crops and Diseases of truck crops and their control diseasesoftruckc00taubuoft Year: [1918] Fig. 67, Tomato Diseases. a. Cladosporium leaf mold, 6. conidiophores of Cladosporium fulvum. c. conidia of C. juhmm, (6. and c. after Southworth), d. two plants artificially infected with iicUrolium Rolfsii, e. sunburn, /. Macrosporium rot. Stock Photo](https://c8.alamy.com/comp/T1JJ6H/diseases-of-truck-crops-and-diseases-of-truck-crops-and-their-control-diseasesoftruckc00taubuoft-year-1918-fig-67-tomato-diseases-a-cladosporium-leaf-mold-6-conidiophores-of-cladosporium-fulvum-c-conidia-of-c-juhmm-6-and-c-after-southworth-d-two-plants-artificially-infected-with-iicurolium-rolfsii-e-sunburn-macrosporium-rot-T1JJ6H.jpg "Diseases of truck crops and Diseases of truck crops and their control diseasesoftruckc00taubuoft Year: [1918] Fig. 67, Tomato Diseases. a. Cladosporium leaf mold, 6. conidiophores of Cladosporium fulvum. c. conidia of C. juhmm, (6. and c. after Southworth), d. two plants artificially infected with iicUrolium Rolfsii, e. sunburn, /. Macrosporium rot. Stock Photo")
RMT1JJ6H–Diseases of truck crops and Diseases of truck crops and their control diseasesoftruckc00taubuoft Year: [1918] Fig. 67, Tomato Diseases. a. Cladosporium leaf mold, 6. conidiophores of Cladosporium fulvum. c. conidia of C. juhmm, (6. and c. after Southworth), d. two plants artificially infected with iicUrolium Rolfsii, e. sunburn, /. Macrosporium rot.
RM2C1GFGE–Asclepias tuberosa var rolfsii Britton ex Vail Shinners Asclepias tuberosa var rolfsii Britton ex Vail Shinners.
RM2CDAW3R–. Journal of agricultural research . Journal of Agricultural Research Vol. XVIll, No. 3 PLATE 4 Sclerotium rolfsii: A.—Cabbage artificially inoculated. The rot is confined to the outer layers of thehead. B.—Cultures on artificial media. C.—Mustard-seed-like sclerotia on cantaloupe. D.—Formation of sclerotia at point of union of apparently plus and minus strains. PLATE s Sclerotium rolfsii; A.—Sweet potato in seed bed, showing method of natural infection of young sprouts. B.—Infected Irish potato, melter stage. C.—Longitudinal section of infected sweet potato, showing nature of rot. Recent Stud
RM2C4X4PC–White mould (Athelia rolfsii) mycelium around the base of a peanut plant, Florida, USA, May
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
RM2C1D9E9–White mould (Athelia rolfsii) fungal disease sclerotia around the soil and base of a peanut (Arachis hypogea) crop plant, USA, May
![Diseases of truck crops and Diseases of truck crops and their control diseasesoftruckc00taubuoft Year: [1918] Fig. Sweet Potato Diseases. a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot T Tre'Jfno''?'. V';.''''''' '.' '' ' d'' ile the si'de'shoots are lue as ttev are supported by the secondary roots formed at the nodes of the vines /,wlJ potato artificially inoculated with Sclerotium Rolfsii. g. net necrosfs. ' Stock Photo](https://c8.alamy.com/comp/T1H0YN/diseases-of-truck-crops-and-diseases-of-truck-crops-and-their-control-diseasesoftruckc00taubuoft-year-1918-fig-sweet-potato-diseases-a-trichoderma-rot-b-septoria-leaf-spot-c-soil-stain-d-charcoal-rot-t-trejfno-v-d-ile-the-sideshoots-are-lue-as-ttev-are-supported-by-the-secondary-roots-formed-at-the-nodes-of-the-vines-wlj-potato-artificially-inoculated-with-sclerotium-rolfsii-g-net-necrosfs-T1H0YN.jpg "Diseases of truck crops and Diseases of truck crops and their control diseasesoftruckc00taubuoft Year: [1918] Fig. Sweet Potato Diseases. a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot T Tre'Jfno''?'. V';.''''''' '.' '' ' d'' ile the si'de'shoots are lue as ttev are supported by the secondary roots formed at the nodes of the vines /,wlJ potato artificially inoculated with Sclerotium Rolfsii. g. net necrosfs. ' Stock Photo")
RMT1H0YN–Diseases of truck crops and Diseases of truck crops and their control diseasesoftruckc00taubuoft Year: [1918] Fig. Sweet Potato Diseases. a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot T Tre'Jfno''?'. V';.''''''' '.' '' ' d'' ile the si'de'shoots are lue as ttev are supported by the secondary roots formed at the nodes of the vines /,wlJ potato artificially inoculated with Sclerotium Rolfsii. g. net necrosfs. '
RM2CDATPH–. Journal of agricultural research . Journiil of Agricultural Research Recent Studies on Sclerotium rolfsii Sacc. Plate 6. Journal of Agricultural Researcin Vol. XVlil, No. 3 PLATE 6 Sclerotium rolfsii: A.—Dead tomato plants, showing fungus growing out on the surface of the soil inradial fans. B.T—Growth on glass of bell jar, showing radial fans. EFFECT OF VARIATION IN MOISTURE CONTENT ONTHE WATER-EXTRACTABLE MATTER OF SOILS By J. C. Martin and A. W. Christie, Division of Agricultural Chemistry, CaliforniaAgricultural Experiment Station The question of the possible effect produced on the water
![. Diseases of truck crops and their control . Vegetables. Fig. 63. Potato Diseases. a. Powdery dry rot, b, Rhizoctonia lesion on young potato sprouts (after W. Orton), c. Rhizoctonia sclerotia on seed potato t"^'»« ** -mfA^r-rR Artificiallv duced by inoculating with a pure culture of Sc/e--'-" - â '^-^ -, S. Rolfsii.. 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 : Stock Photo](https://c8.alamy.com/comp/PG4CDT/diseases-of-truck-crops-and-their-control-vegetables-fig-63-potato-diseases-a-powdery-dry-rot-b-rhizoctonia-lesion-on-young-potato-sprouts-after-w-orton-c-rhizoctonia-sclerotia-on-seed-potato-tquot-mfar-rr-artificiallv-duced-by-inoculating-with-a-pure-culture-of-sce-quot-s-rolfsii-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-PG4CDT.jpg ". Diseases of truck crops and their control . Vegetables. Fig. 63. Potato Diseases. a. Powdery dry rot, b, Rhizoctonia lesion on young potato sprouts (after W. Orton), c. Rhizoctonia sclerotia on seed potato t"^'»« ** -mfA^r-rR Artificiallv duced by inoculating with a pure culture of Sc/e--'-" - â '^-^ -, S. Rolfsii.. 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 : Stock Photo")
RMPG4CDT–. Diseases of truck crops and their control . Vegetables. Fig. 63. Potato Diseases. a. Powdery dry rot, b, Rhizoctonia lesion on young potato sprouts (after W. Orton), c. Rhizoctonia sclerotia on seed potato t"^'»« ** -mfA^r-rR Artificiallv duced by inoculating with a pure culture of Sc/e--'-" - â '^-^ -, S. Rolfsii.. 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 :
![Diseases of truck crops and Diseases of truck crops and their control diseasesoftruckc00taubuoft Year: [1918] Fig. 63. Potato Diseases. a. Powdery dry rot, b. Rhizoctonia lesion on young potato sprouts (after W. A. Orton), c. Rhizoctonia sclerotia on seed potato tubers, d. melters, artificially in- duced by inoculating with a pure culture of Sderoltum Rolfsii. e. pure culture of 5. Rolfsii. Stock Photo](https://c8.alamy.com/comp/T1HYHG/diseases-of-truck-crops-and-diseases-of-truck-crops-and-their-control-diseasesoftruckc00taubuoft-year-1918-fig-63-potato-diseases-a-powdery-dry-rot-b-rhizoctonia-lesion-on-young-potato-sprouts-after-w-a-orton-c-rhizoctonia-sclerotia-on-seed-potato-tubers-d-melters-artificially-in-duced-by-inoculating-with-a-pure-culture-of-sderoltum-rolfsii-e-pure-culture-of-5-rolfsii-T1HYHG.jpg "Diseases of truck crops and Diseases of truck crops and their control diseasesoftruckc00taubuoft Year: [1918] Fig. 63. Potato Diseases. a. Powdery dry rot, b. Rhizoctonia lesion on young potato sprouts (after W. A. Orton), c. Rhizoctonia sclerotia on seed potato tubers, d. melters, artificially in- duced by inoculating with a pure culture of Sderoltum Rolfsii. e. pure culture of 5. Rolfsii. Stock Photo")
RMT1HYHG–Diseases of truck crops and Diseases of truck crops and their control diseasesoftruckc00taubuoft Year: [1918] Fig. 63. Potato Diseases. a. Powdery dry rot, b. Rhizoctonia lesion on young potato sprouts (after W. A. Orton), c. Rhizoctonia sclerotia on seed potato tubers, d. melters, artificially in- duced by inoculating with a pure culture of Sderoltum Rolfsii. e. pure culture of 5. Rolfsii.
RM2CDAWFC–. Journal of agricultural research . Journal of Agricultural Research Vol. XVIII, No. 3 Recent Studies on Sclcrotiutn rolfsii Sacc. Plate 4. Journal of Agricultural Research Vol. XVIll, No. 3 PLATE 4 Sclerotium rolfsii: A.—Cabbage artificially inoculated. The rot is confined to the outer layers of thehead. B.—Cultures on artificial media. C.—Mustard-seed-like sclerotia on cantaloupe. D.—Formation of sclerotia at point of union of apparently plus and minus strains. PLATE s Sclerotium rolfsii; A.—Sweet potato in seed bed, showing method of natural infection of young sprouts. B.—Infected Irish po
![. Diseases of truck crops and their control . Vegetables. Fig. 67. Tomato Diseases. ti. Cladosporium leaf mold, b. conidiophores of Cladosporiutn fulvum, c. conidia of C. fulvum, b. and c. after Southworth), d. two mm-im.^ ^wCno^-vw^:;-^-, it^u).,£.n^.i-,.;,,.",'. Scleroiium Rolfsii, e. sunburn, /. Macrosporium, r-. 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. D Stock Photo](https://c8.alamy.com/comp/PG4CBM/diseases-of-truck-crops-and-their-control-vegetables-fig-67-tomato-diseases-ti-cladosporium-leaf-mold-b-conidiophores-of-cladosporiutn-fulvum-c-conidia-of-c-fulvum-b-and-c-after-southworth-d-two-mm-im-wcno-vw-ituni-quot-scleroiium-rolfsii-e-sunburn-macrosporium-r-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-d-PG4CBM.jpg ". Diseases of truck crops and their control . Vegetables. Fig. 67. Tomato Diseases. ti. Cladosporium leaf mold, b. conidiophores of Cladosporiutn fulvum, c. conidia of C. fulvum, b. and c. after Southworth), d. two mm-im.^ ^wCno^-vw^:;-^-, it^u).,£.n^.i-,.;,,.",'. Scleroiium Rolfsii, e. sunburn, /. Macrosporium, r-. 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. D Stock Photo")
RMPG4CBM–. Diseases of truck crops and their control . Vegetables. Fig. 67. Tomato Diseases. ti. Cladosporium leaf mold, b. conidiophores of Cladosporiutn fulvum, c. conidia of C. fulvum, b. and c. after Southworth), d. two mm-im.^ ^wCno^-vw^:;-^-, it^u).,£.n^.i-,.;,,.",'. Scleroiium Rolfsii, e. sunburn, /. Macrosporium, r-. 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. D
RMMCKAXP–. Fig. 102. — Sclerotium Rolfsii Sacc. in litt. growing upon a cantaloupe at point of contact with the soil. After Hume.
RMT1GWJP–Diseases of economic plants (1921) Diseases of economic plants diseasesofeconom01stev Year: 1921 Fig. 76. — Fig in well-advanced stage of fruit-rot. Original. considerable damage, causing premature falling of leaves. The rust appears as brown spots upon the leaf. Leaf-blight {Cercospora bol- leana (Thtim.) Speg.). — This blight has been noted in the United States, though l)ut slight attention has been given it. It causes injury similar to that of rust. Other diseases of the fig are: a root-knot due to nematodes; a Rhizoctonia leaf-blight; Southern-blight (Sderotium rolfsii); Cankers due to M
RM2CDAXXC–. Journal of agricultural research . iTffi^ B. Journal of Agricultural Research Vol. XVIIl, No. 3 PLATE 2 Pot cultures on acid black sand soil: A.—Wlieat; B.—Red clover; C.—Red turnip beets. SERIES NO. TREATMENT PER MILI W 3 No carbonates. W 4 I ton calcite. W 5 2 tons calcite. W 9 2 tons dolomite. W lo 2 tons magnesite. W13 6 tons calcite. W14 6 tons magnesite. RECENT STUDIES ON SCLEROTIUM ROLFSII SACC. By J. J. Taubenhaus Chief of Division of Plant Pathology and Physiology, Texas Agricultural Experiment Station ECONOMIC IMPORTANCE OF THE FUNGUS As a parasite ScleroHum rolfsii Sacc. is of the
![. The fungi which cause plant disease . Plant diseases; Fungi. 662 THE FUNGI WHICH CAUSE PLANT DISEASE O. omnivorum Sh.'"^' '-^-*'' Mycelium dirty yellow; sometimes whitish when young, grow- ing in the vascular bundles of the host; hyphse forming strands and spreading from them, producing a rather dense arachnoid layer on the surface of the host and bearing 1 to 4 branches arising. Via. 448.—S. rolfsii, sterile mycelium growing on carrot. After Stevens and Hall. and growing at right angles from the same point near the ends, 3 to 5 ;u in diameter, tapering toward the ends.. It causes root Stock Photo](https://c8.alamy.com/comp/PG45E7/the-fungi-which-cause-plant-disease-plant-diseases-fungi-662-the-fungi-which-cause-plant-disease-o-omnivorum-shquot-mycelium-dirty-yellow-sometimes-whitish-when-young-grow-ing-in-the-vascular-bundles-of-the-host-hyphse-forming-strands-and-spreading-from-them-producing-a-rather-dense-arachnoid-layer-on-the-surface-of-the-host-and-bearing-1-to-4-branches-arising-via-448s-rolfsii-sterile-mycelium-growing-on-carrot-after-stevens-and-hall-and-growing-at-right-angles-from-the-same-point-near-the-ends-3-to-5-u-in-diameter-tapering-toward-the-ends-it-causes-root-PG45E7.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 662 THE FUNGI WHICH CAUSE PLANT DISEASE O. omnivorum Sh.'"^' '-^-*'' Mycelium dirty yellow; sometimes whitish when young, grow- ing in the vascular bundles of the host; hyphse forming strands and spreading from them, producing a rather dense arachnoid layer on the surface of the host and bearing 1 to 4 branches arising. Via. 448.—S. rolfsii, sterile mycelium growing on carrot. After Stevens and Hall. and growing at right angles from the same point near the ends, 3 to 5 ;u in diameter, tapering toward the ends.. It causes root Stock Photo")
RMPG45E7–. The fungi which cause plant disease . Plant diseases; Fungi. 662 THE FUNGI WHICH CAUSE PLANT DISEASE O. omnivorum Sh.'"^' '-^-*'' Mycelium dirty yellow; sometimes whitish when young, grow- ing in the vascular bundles of the host; hyphse forming strands and spreading from them, producing a rather dense arachnoid layer on the surface of the host and bearing 1 to 4 branches arising. Via. 448.—S. rolfsii, sterile mycelium growing on carrot. After Stevens and Hall. and growing at right angles from the same point near the ends, 3 to 5 ;u in diameter, tapering toward the ends.. It causes root
RMMCKWGK–. Fig. 67, Tomato Diseases. a. Cladosporium leaf mold, 6. conidiophores of Cladosporium fulvum. c. conidia of C. juhmm, (6. and c. after Southworth), d. two plants artificially infected with iicUrolium Rolfsii, e. sunburn, /. Macrosporium rot.
RMT1H5KJ–Diseases of flowers and other Diseases of flowers and other ornamentals diseasesofflower118smit Year: 1940 1 Fig. 12.—Iris rust. forms numerous, small seedlike bodies or sclerotia (fig. 11) on the sur- face of the affected plants. 8. Rolfsii also attacks sugar beets and many other hosts. Affected rhizomes should be dug out and destroyed. The remaining ones should be thinned and replanted, if possible in a new place. Rust.—Powdery pustules of reddish-brown spores of a rust fungus, Puccinia iridis, may appear on the leaves (fig. 12), which may be killed prematurely if the infection is sever
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
RMMCKA34–. Fig. 102. — Sclerotium Rolfsii Sacc. in litt. growing upon a cantaloupe at point of contact with the soil. After Hume. 1 Giddings, N.J. Sci. n. s. Bui. 148, 1910. », 911, June 4, 1909; also Vt. Agr. Exp. Sta.
RMT1H398–Diseases of cotton, sugar cane, Diseases of cotton, sugar cane, forest trees, ornamentals and miscellaneous plants in the United States in 1919 diseasesofcotton11mart Year: 1920 Red rot and red stripe were reported from Georgia, Florida, Alatama, Louisiana and Texas. In Louisiana the disease was prevalent. In Alatama it was atundant. Pit.. 5*. Showing the location of areas of red rot in the southern cane belt. Sheath rot caused by Sclerotium rolfsii Sacc, Sheath rot was i-eported froia Geort;ia, Florida, Alabama and Louisiana. As shown in Pi. 53 i'*'- as very prev- alent over a larie area
RMRDE317–. Diseases of economic plants . Plant diseases. VEGETABLE AND FIELD CROPS 313 weather damp. Often it is still better to begin spraying in the seed bed. Southern blight (Sclerotium Rolfsii Sacc. in litt.).— This is the same disease discussed under pepper. Upon the tomato it is often completely destructive in the south- ernmost states. The first sign is wilting of the terminal portion of the plant, distinguishing this trouble from the fungous wilt, which commences with the lower leaves. For discussion and treatment see pepper. Anthracnose [Colletotri- chum phomoides (Sacc.) Chest.).—-This is chi
RMMCR686–. Red rot and red stripe were reported from Georgia, Florida, Alatama, Louisiana and Texas. In Louisiana the disease was prevalent. In Alatama it was atundant. Pit.. 5*^. Showing the location of areas of red rot in the southern cane belt. Sheath rot caused by Sclerotium rolfsii Sacc,
![. Diseases of truck crops and their control . Vegetables. Fig. 63. Potato Diseases. a. Powdery dry rot, b, Rhizoctonia lesion on young potato sprouts (after W. Orton), c. Rhizoctonia sclerotia on seed potato t"^'»« ** -mfA^r-rR Artificiallv duced by inoculating with a pure culture of Sc/e--'-" - â '^-^ -, S. Rolfsii.. 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 : Stock Photo](https://c8.alamy.com/comp/RDE09T/diseases-of-truck-crops-and-their-control-vegetables-fig-63-potato-diseases-a-powdery-dry-rot-b-rhizoctonia-lesion-on-young-potato-sprouts-after-w-orton-c-rhizoctonia-sclerotia-on-seed-potato-tquot-mfar-rr-artificiallv-duced-by-inoculating-with-a-pure-culture-of-sce-quot-s-rolfsii-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-RDE09T.jpg ". Diseases of truck crops and their control . Vegetables. Fig. 63. Potato Diseases. a. Powdery dry rot, b, Rhizoctonia lesion on young potato sprouts (after W. Orton), c. Rhizoctonia sclerotia on seed potato t"^'»« ** -mfA^r-rR Artificiallv duced by inoculating with a pure culture of Sc/e--'-" - â '^-^ -, S. Rolfsii.. 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 : Stock Photo")
RMRDE09T–. Diseases of truck crops and their control . Vegetables. Fig. 63. Potato Diseases. a. Powdery dry rot, b, Rhizoctonia lesion on young potato sprouts (after W. Orton), c. Rhizoctonia sclerotia on seed potato t"^'»« ** -mfA^r-rR Artificiallv duced by inoculating with a pure culture of Sc/e--'-" - â '^-^ -, S. Rolfsii.. 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 :
RMMCKWGT–. Fig. 63. Potato Diseases. a. Powdery dry rot, b. Rhizoctonia lesion on young potato sprouts (after W. A. Orton), c. Rhizoctonia sclerotia on seed potato tubers, d. melters, artificially in- duced by inoculating with a pure culture of Sderoltum Rolfsii. e. pure culture of 5. Rolfsii.
![. The fungi which cause plant disease . Plant diseases; Fungi. 662 THE FUNGI WHICH CAUSE PLANT DISEASE O. omnivorum Sh.'"^' '-^-*'' Mycelium dirty yellow; sometimes whitish when young, grow- ing in the vascular bundles of the host; hyphse forming strands and spreading from them, producing a rather dense arachnoid layer on the surface of the host and bearing 1 to 4 branches arising. Via. 448.—S. rolfsii, sterile mycelium growing on carrot. After Stevens and Hall. and growing at right angles from the same point near the ends, 3 to 5 ;u in diameter, tapering toward the ends.. It causes root Stock Photo](https://c8.alamy.com/comp/RDE4R5/the-fungi-which-cause-plant-disease-plant-diseases-fungi-662-the-fungi-which-cause-plant-disease-o-omnivorum-shquot-mycelium-dirty-yellow-sometimes-whitish-when-young-grow-ing-in-the-vascular-bundles-of-the-host-hyphse-forming-strands-and-spreading-from-them-producing-a-rather-dense-arachnoid-layer-on-the-surface-of-the-host-and-bearing-1-to-4-branches-arising-via-448s-rolfsii-sterile-mycelium-growing-on-carrot-after-stevens-and-hall-and-growing-at-right-angles-from-the-same-point-near-the-ends-3-to-5-u-in-diameter-tapering-toward-the-ends-it-causes-root-RDE4R5.jpg ". The fungi which cause plant disease . Plant diseases; Fungi. 662 THE FUNGI WHICH CAUSE PLANT DISEASE O. omnivorum Sh.'"^' '-^-*'' Mycelium dirty yellow; sometimes whitish when young, grow- ing in the vascular bundles of the host; hyphse forming strands and spreading from them, producing a rather dense arachnoid layer on the surface of the host and bearing 1 to 4 branches arising. Via. 448.—S. rolfsii, sterile mycelium growing on carrot. After Stevens and Hall. and growing at right angles from the same point near the ends, 3 to 5 ;u in diameter, tapering toward the ends.. It causes root Stock Photo")
RMRDE4R5–. The fungi which cause plant disease . Plant diseases; Fungi. 662 THE FUNGI WHICH CAUSE PLANT DISEASE O. omnivorum Sh.'"^' '-^-*'' Mycelium dirty yellow; sometimes whitish when young, grow- ing in the vascular bundles of the host; hyphse forming strands and spreading from them, producing a rather dense arachnoid layer on the surface of the host and bearing 1 to 4 branches arising. Via. 448.—S. rolfsii, sterile mycelium growing on carrot. After Stevens and Hall. and growing at right angles from the same point near the ends, 3 to 5 ;u in diameter, tapering toward the ends.. It causes root
RMMCKWJN–. Fig. 63. Potato Diseases. a. Powdery dry rot, b. Rhizoctonia lesion on young potato sprouts (after W. A. Orton), c. Rhizoctonia sclerotia on seed potato tubers, d. melters, artificially in- duced by inoculating with a pure culture of Sderotium Roljsii. e. pure culture of S. Rolfsii.
![. Botany : current literature. Botany; Bibliography. OTA CURRENT LITERATURE. ADDITIONS TO THE BOTANICAL CATALOGUE, BUREAU OF PLANT INDUSTRY. [T - " . , . â COMPILED FROM PUBLICATIONS RECEIVED IN THE c ^ LIBRARY OF THE UNITED STATES DEPARTMENT OF AGRICULTURE, WASHINGTON. D. O Vol- 15, no. 3. â Jan.30-Feb.ll, 1933. Agr. G-az. N-S.T7. (Sydney) (23p±72) Birmingham, W. A. Another fungus attacking apple stocks. Sclerotium rolfsii Sacc. recorded on Northern Spy in New .South Wales. Agr. G-az. N.S.W. 44: 58-60. illus. Ja.l, 1933. no.l. Macindoe, S. L. Leaf rust of wheat. Observations at Glen Inn Stock Photo](https://c8.alamy.com/comp/RH9K7E/botany-current-literature-botany-bibliography-ota-current-literature-additions-to-the-botanical-catalogue-bureau-of-plant-industry-t-quot-compiled-from-publications-received-in-the-c-library-of-the-united-states-department-of-agriculture-washington-d-o-vol-15-no-3-jan30-febll-1933-agr-g-az-n-st7-sydney-23p72-birmingham-w-a-another-fungus-attacking-apple-stocks-sclerotium-rolfsii-sacc-recorded-on-northern-spy-in-new-south-wales-agr-g-az-nsw-44-58-60-illus-jal-1933-nol-macindoe-s-l-leaf-rust-of-wheat-observations-at-glen-inn-RH9K7E.jpg ". Botany : current literature. Botany; Bibliography. OTA CURRENT LITERATURE. ADDITIONS TO THE BOTANICAL CATALOGUE, BUREAU OF PLANT INDUSTRY. [T - " . , . â COMPILED FROM PUBLICATIONS RECEIVED IN THE c ^ LIBRARY OF THE UNITED STATES DEPARTMENT OF AGRICULTURE, WASHINGTON. D. O Vol- 15, no. 3. â Jan.30-Feb.ll, 1933. Agr. G-az. N-S.T7. (Sydney) (23p±72) Birmingham, W. A. Another fungus attacking apple stocks. Sclerotium rolfsii Sacc. recorded on Northern Spy in New .South Wales. Agr. G-az. N.S.W. 44: 58-60. illus. Ja.l, 1933. no.l. Macindoe, S. L. Leaf rust of wheat. Observations at Glen Inn Stock Photo")
RMRH9K7E–. Botany : current literature. Botany; Bibliography. OTA CURRENT LITERATURE. ADDITIONS TO THE BOTANICAL CATALOGUE, BUREAU OF PLANT INDUSTRY. [T - " . , . â COMPILED FROM PUBLICATIONS RECEIVED IN THE c ^ LIBRARY OF THE UNITED STATES DEPARTMENT OF AGRICULTURE, WASHINGTON. D. O Vol- 15, no. 3. â Jan.30-Feb.ll, 1933. Agr. G-az. N-S.T7. (Sydney) (23p±72) Birmingham, W. A. Another fungus attacking apple stocks. Sclerotium rolfsii Sacc. recorded on Northern Spy in New .South Wales. Agr. G-az. N.S.W. 44: 58-60. illus. Ja.l, 1933. no.l. Macindoe, S. L. Leaf rust of wheat. Observations at Glen Inn
RMMCKWPE–. 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.
![. Dr. K.W. van Gorkom's Oost-Indische cultures. Opnieuw uitg. onder redactie van H.C. Prinsen Geerligs. [Door J.P. van der Stock et al.]. Agriculture; Agriculture; Plantations. 153 Tabak.. (Foto Verzameling D. P. S.). Fig. 78. Jonge tabaksplant aangetast door Sclerotium rolfsii. gebruikt om met het plukken aan te vangen. De spikkels zijn ronde vlekken, die afwisselend uit donker en licht gekleurde concentrische ringen bestaan, met een wit vlekje in het midden. De grootte varieert van minder dan 1 m.M. tot 12 en meer m.M. De afwijking heeft voor de tegenwoordige markt grooten- deels haar waarde Stock Photo](https://c8.alamy.com/comp/REJA24/dr-kw-van-gorkoms-oost-indische-cultures-opnieuw-uitg-onder-redactie-van-hc-prinsen-geerligs-door-jp-van-der-stock-et-al-agriculture-agriculture-plantations-153-tabak-foto-verzameling-d-p-s-fig-78-jonge-tabaksplant-aangetast-door-sclerotium-rolfsii-gebruikt-om-met-het-plukken-aan-te-vangen-de-spikkels-zijn-ronde-vlekken-die-afwisselend-uit-donker-en-licht-gekleurde-concentrische-ringen-bestaan-met-een-wit-vlekje-in-het-midden-de-grootte-varieert-van-minder-dan-1-mm-tot-12-en-meer-mm-de-afwijking-heeft-voor-de-tegenwoordige-markt-grooten-deels-haar-waarde-REJA24.jpg ". Dr. K.W. van Gorkom's Oost-Indische cultures. Opnieuw uitg. onder redactie van H.C. Prinsen Geerligs. [Door J.P. van der Stock et al.]. Agriculture; Agriculture; Plantations. 153 Tabak.. (Foto Verzameling D. P. S.). Fig. 78. Jonge tabaksplant aangetast door Sclerotium rolfsii. gebruikt om met het plukken aan te vangen. De spikkels zijn ronde vlekken, die afwisselend uit donker en licht gekleurde concentrische ringen bestaan, met een wit vlekje in het midden. De grootte varieert van minder dan 1 m.M. tot 12 en meer m.M. De afwijking heeft voor de tegenwoordige markt grooten- deels haar waarde Stock Photo")
RMREJA24–. Dr. K.W. van Gorkom's Oost-Indische cultures. Opnieuw uitg. onder redactie van H.C. Prinsen Geerligs. [Door J.P. van der Stock et al.]. Agriculture; Agriculture; Plantations. 153 Tabak.. (Foto Verzameling D. P. S.). Fig. 78. Jonge tabaksplant aangetast door Sclerotium rolfsii. gebruikt om met het plukken aan te vangen. De spikkels zijn ronde vlekken, die afwisselend uit donker en licht gekleurde concentrische ringen bestaan, met een wit vlekje in het midden. De grootte varieert van minder dan 1 m.M. tot 12 en meer m.M. De afwijking heeft voor de tegenwoordige markt grooten- deels haar waarde
![. Fig. Sweet Potato Diseases. a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot ^ T Tre'Jfn^o"'?'. V^';.'""'"'' "^.^'^^ ^"' '^ d^^'^' ^^ile the si'de'shoots are lu^e as ttev are supported by the secondary roots formed at the nodes of the vines /,wlJ potato artificially inoculated with Sclerotium Rolfsii. g. net necrosfs. ^' Stock Photo](https://c8.alamy.com/comp/MCKWM2/fig-sweet-potato-diseases-a-trichoderma-rot-b-septoria-leaf-spot-c-soil-stain-d-charcoal-rot-t-trejfnoquot-vquotquotquot-quot-quot-d-ile-the-sideshoots-are-lue-as-ttev-are-supported-by-the-secondary-roots-formed-at-the-nodes-of-the-vines-wlj-potato-artificially-inoculated-with-sclerotium-rolfsii-g-net-necrosfs-MCKWM2.jpg ". Fig. Sweet Potato Diseases. a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot ^ T Tre'Jfn^o"'?'. V^';.'""'"'' "^.^'^^ ^"' '^ d^^'^' ^^ile the si'de'shoots are lu^e as ttev are supported by the secondary roots formed at the nodes of the vines /,wlJ potato artificially inoculated with Sclerotium Rolfsii. g. net necrosfs. ^' Stock Photo")
RMMCKWM2–. Fig. Sweet Potato Diseases. a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot ^ T Tre'Jfn^o"'?'. V^';.'""'"'' "^.^'^^ ^"' '^ d^^'^' ^^ile the si'de'shoots are lu^e as ttev are supported by the secondary roots formed at the nodes of the vines /,wlJ potato artificially inoculated with Sclerotium Rolfsii. g. net necrosfs. ^'
![. Dr. K.W. van Gorkom's Oost-Indische cultures. Opnieuw uitg. onder redactie van H.C. Prinsen Geerligs. [Door J.P. van der Stock et al.]. Agriculture; Agriculture; Plantations. (Foto Verzameling D. P. S.). Fig. 78. Jonge tabaksplant aangetast door Sclerotium rolfsii. gebruikt om met het plukken aan te vangen. De spikkels zijn ronde vlekken, die afwisselend uit donker en licht gekleurde concentrische ringen bestaan, met een wit vlekje in het midden. De grootte varieert van minder dan 1 m.M. tot 12 en meer m.M. De afwijking heeft voor de tegenwoordige markt grooten- deels haar waarde verloren. I Stock Photo](https://c8.alamy.com/comp/REJA23/dr-kw-van-gorkoms-oost-indische-cultures-opnieuw-uitg-onder-redactie-van-hc-prinsen-geerligs-door-jp-van-der-stock-et-al-agriculture-agriculture-plantations-foto-verzameling-d-p-s-fig-78-jonge-tabaksplant-aangetast-door-sclerotium-rolfsii-gebruikt-om-met-het-plukken-aan-te-vangen-de-spikkels-zijn-ronde-vlekken-die-afwisselend-uit-donker-en-licht-gekleurde-concentrische-ringen-bestaan-met-een-wit-vlekje-in-het-midden-de-grootte-varieert-van-minder-dan-1-mm-tot-12-en-meer-mm-de-afwijking-heeft-voor-de-tegenwoordige-markt-grooten-deels-haar-waarde-verloren-i-REJA23.jpg ". Dr. K.W. van Gorkom's Oost-Indische cultures. Opnieuw uitg. onder redactie van H.C. Prinsen Geerligs. [Door J.P. van der Stock et al.]. Agriculture; Agriculture; Plantations. (Foto Verzameling D. P. S.). Fig. 78. Jonge tabaksplant aangetast door Sclerotium rolfsii. gebruikt om met het plukken aan te vangen. De spikkels zijn ronde vlekken, die afwisselend uit donker en licht gekleurde concentrische ringen bestaan, met een wit vlekje in het midden. De grootte varieert van minder dan 1 m.M. tot 12 en meer m.M. De afwijking heeft voor de tegenwoordige markt grooten- deels haar waarde verloren. I Stock Photo")
RMREJA23–. Dr. K.W. van Gorkom's Oost-Indische cultures. Opnieuw uitg. onder redactie van H.C. Prinsen Geerligs. [Door J.P. van der Stock et al.]. Agriculture; Agriculture; Plantations. (Foto Verzameling D. P. S.). Fig. 78. Jonge tabaksplant aangetast door Sclerotium rolfsii. gebruikt om met het plukken aan te vangen. De spikkels zijn ronde vlekken, die afwisselend uit donker en licht gekleurde concentrische ringen bestaan, met een wit vlekje in het midden. De grootte varieert van minder dan 1 m.M. tot 12 en meer m.M. De afwijking heeft voor de tegenwoordige markt grooten- deels haar waarde verloren. I
RMMCKA4B–. Fig. 116. — Peanut leaf-spot. After Wolf. begin to fall soon after they spot, and in many cases the death of the plant results. It is often a pest. The causal fungus was first collected in Carolina and Alabama by Ravenel. Southern-blight {Sclerotium rolfsii) does some damage. (See pp. 23, 215.) The true rust {Uredo arachidis Lag.) is injurious in the sub-tropics. Red-rot of the pods, charac- terized by brown discoloration and the presence of red perithecia {Neocosmospora) is of slight importance.
RMRCCKG7–. 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 pe
RMMCK9HJ–. Fig. 12.—Iris rust. forms numerous, small seedlike bodies or sclerotia (fig. 11) on the sur- face of the affected plants. 8. Rolfsii also attacks sugar beets and many other hosts. Affected rhizomes should be dug out and destroyed. The remaining ones should be thinned and replanted, if possible in a new place. Rust.—Powdery pustules of reddish-brown spores of a rust fungus, Puccinia iridis, may appear on the leaves (fig. 12), which may be killed prematurely if the infection is severe. Most of the commonest species and varieties of iris are fortunately immune to this disease. When the tops are
RMRCC6EH–. Diseases of economic plants. Plant diseases. VEGETABLE AND FIELD CROPS 313 weather damp. Often it is still better to begin spraying in the seed bed. Southern blight (Sclerotium Rolfsii Sacc. in litt.).— This is the same disease discussed under pepper. Upon the tomato it is often completely destructive in the south- ernmost states. The first sign is wilting of the terminal portion of the plant, distinguishing this trouble from the fungous wilt, which commences with the lower leaves. For discussion and treatment see pepper. Anthracnose {Colletotri- chum phomoides (Sacc.) Chest.). —This is chie
RMMCKB04–. considerable damage, causing premature falling of leaves. The rust appears as brown spots upon the leaf. Leaf-blight {Cercospora bol- leana (Thiim.) Speg.). —This blight has been noted in the United States, though but slight attention has been given it. It causes injury similar to that of Fig. 76. — Fig in well-advanced rust, of fruit-rot. Original. Other diseases of the fig are: a Rhizoctonia leaf-blight; a root-knot due to nematodes; Southern-blight (Sclerotium rolfsii); Cankers due to Mac- rophoma, Libertella, and Tubercularia; Limb-blight due to Corticium; Root-rot (Ozonium) and Yellow-r
RMRCCK9T–. Diseases of truck crops and their control. Plants -- Diseases. Fig. 67, Tomato Diseases. a. Cladosporium leaf mold, 6. conidiophores of Cladosporium fulvum. c. conidia of C. juhmm, (6. and c. after Southworth), d. two plants artificially infected with iicUrolium Rolfsii, e. sunburn, /. Macrosporium rot.. 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. New York, Dutton
RMMCKA8D–. Fig. 76. — Fig in well-advanced stage of fruit-rot. Original. considerable damage, causing premature falling of leaves. The rust appears as brown spots upon the leaf. Leaf-blight {Cercospora bol- leana (Thtim.) Speg.). — This blight has been noted in the United States, though l)ut slight attention has been given it. It causes injury similar to that of rust. Other diseases of the fig are: a root-knot due to nematodes; a Rhizoctonia leaf-blight; Southern-blight (Sderotium rolfsii); Cankers due to Mac- rophoma, Libertella, and Tubercularia; Limb-blight due to Corticium; Root-rot (Ozonium) and Y
RMRCDPM2–. Diseases of economic plants. Plant diseases. Vegetable and Field Crops 185 If melons be repeatedly grown upon the same field, the disease increases year by year; hence rotation should be practiced, and resistant varieties should be used. A promis- ing resistant variety has been reported by Blinn. Spraying as recommended for cucurbits generally is effective. Southern-blight {Sderotium rolfsii Sacc). â A large per- centage of the muskmelon and watermelon crops in the. Fig. 101. â Muskmelon leaf spotted with downy-mildew. Original. southernmost states is often destroyed by this disease. It is p
RMMCK9FF–. Fig. 95- Geographical distribution of Pucca nia malvacearum on i^lthea rosea in the U. S,, as reported to the Plant Disease Survey . Leaf spot caused by Cerco spora althaeina Sacc. Delav/are, Minnesota. /mthracnose caused by Colletotrichum malvarum (B. & C.) South. Delav/are - stem ard leaf infection. Root rot caused by Ozonium omnivorum Shear Texas - important, reduces the crop about 10%. HYDPviWGEA (Hydrangea hortensia) Leaf spot caused by Phyllosticta hydran^eae Ell. c; Ev. New York Frost in,jury Ohio IRIS (Iris spp.) Sclerotium caused by Sclerotium rolfsii Sacc. California - to all a
RMRCC6GC–. Diseases of economic plants. Plant diseases. Vegetable and Field Crops 185 If melons be repeatedly grown upon the same field, the disease increases year by year; hence rotation should be practiced, and resistant varieties should be used. A promis- ing resistant variety has been reported by Blinn. Spraying as recommended for cucurbits generally is effective. Southern-blight {Sderotium rolfsii Sacc). — A large per- centage of the muskmelon and watermelon crops in the. Fig. 101. — Muskmelon leaf spotted with downy-mildew. Original. southernmost states is often destroyed by this disease. It is p
![. Dr. K.W. van Gorkom's Oost-Indische cultures. Opnieuw uitg. onder redactie van H.C. Prinsen Geerligs. [Door J.P. van der Stock et al.] . (Foto Verzameling D. P. S.). Fig. 78. Jonge tabaksplant aangetast door Sclerotium rolfsii. gebruikt om met het plukken aan te vangen. De spikkels zijn ronde vlekken, die afwisselend uit donker en licht gekleurde concentrische ringen bestaan, met een wit vlekje in het midden. De grootte varieert van minder dan 1 m.M. tot 12 en meer m.M. De afwijking heeft voor de tegenwoordige markt grooten- deels haar waarde verloren. In Amerika richt deze schim- mel dikwij Stock Photo](https://c8.alamy.com/comp/MAAKA3/dr-kw-van-gorkoms-oost-indische-cultures-opnieuw-uitg-onder-redactie-van-hc-prinsen-geerligs-door-jp-van-der-stock-et-al-foto-verzameling-d-p-s-fig-78-jonge-tabaksplant-aangetast-door-sclerotium-rolfsii-gebruikt-om-met-het-plukken-aan-te-vangen-de-spikkels-zijn-ronde-vlekken-die-afwisselend-uit-donker-en-licht-gekleurde-concentrische-ringen-bestaan-met-een-wit-vlekje-in-het-midden-de-grootte-varieert-van-minder-dan-1-mm-tot-12-en-meer-mm-de-afwijking-heeft-voor-de-tegenwoordige-markt-grooten-deels-haar-waarde-verloren-in-amerika-richt-deze-schim-mel-dikwij-MAAKA3.jpg ". Dr. K.W. van Gorkom's Oost-Indische cultures. Opnieuw uitg. onder redactie van H.C. Prinsen Geerligs. [Door J.P. van der Stock et al.] . (Foto Verzameling D. P. S.). Fig. 78. Jonge tabaksplant aangetast door Sclerotium rolfsii. gebruikt om met het plukken aan te vangen. De spikkels zijn ronde vlekken, die afwisselend uit donker en licht gekleurde concentrische ringen bestaan, met een wit vlekje in het midden. De grootte varieert van minder dan 1 m.M. tot 12 en meer m.M. De afwijking heeft voor de tegenwoordige markt grooten- deels haar waarde verloren. In Amerika richt deze schim- mel dikwij Stock Photo")
RMMAAKA3–. Dr. K.W. van Gorkom's Oost-Indische cultures. Opnieuw uitg. onder redactie van H.C. Prinsen Geerligs. [Door J.P. van der Stock et al.] . (Foto Verzameling D. P. S.). Fig. 78. Jonge tabaksplant aangetast door Sclerotium rolfsii. gebruikt om met het plukken aan te vangen. De spikkels zijn ronde vlekken, die afwisselend uit donker en licht gekleurde concentrische ringen bestaan, met een wit vlekje in het midden. De grootte varieert van minder dan 1 m.M. tot 12 en meer m.M. De afwijking heeft voor de tegenwoordige markt grooten- deels haar waarde verloren. In Amerika richt deze schim- mel dikwij
RMRCDP73–. Diseases of flowers and other ornamentals. Flowers; Plant diseases. Diseases of Flowers and Other Ornamentals 37 Mosaic.—The foliage of iris affected by mosaic is streaked with light, yellowish-green areas and the plants somewhat stunted. This disease, which is more severe on the bulbous than on the rhizome type of iris, is caused by a virus. Affected plants should be destroyed if the disease is serious. Plants showing mosaic symptoms should not be used for propa- gation. Root Rot, Crown Rot.—Crowns and leaf bases of the plants may be rotted by a white mold fungus, Sclerotium Rolfsii or 8. d
RMRCC6J6–. Diseases of economic plants. Plant diseases. considerable damage, causing premature falling of leaves. The rust appears as brown spots upon the leaf. Leaf-blight {Cercospora bol- leana (Thiim.) Speg.). —This blight has been noted in the United States, though but slight attention has been given it. It causes injury similar to that of Fig. 76. — Fig in well-advanced rust, of fruit-rot. Original. Other diseases of the fig are: a Rhizoctonia leaf-blight; a root-knot due to nematodes; Southern-blight (Sclerotium rolfsii); Cankers due to Mac- rophoma, Libertella, and Tubercularia; Limb-blight due
![. Diseases of truck crops and their control. Plants -- Diseases. Fig. Sweet Potato Diseases. a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot ^ T Tre'Jfn^o"'?'. V^';.'""'"'' "^.^'^^ ^"' '^ d^^'^' ^^ile the si'de'shoots are lu^e as ttev are supported by the secondary roots formed at the nodes of the vines /,wlJ potato artificially inoculated with Sclerotium Rolfsii. g. net necrosfs. ^'. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of thes Stock Photo](https://c8.alamy.com/comp/RCCKE2/diseases-of-truck-crops-and-their-control-plants-diseases-fig-sweet-potato-diseases-a-trichoderma-rot-b-septoria-leaf-spot-c-soil-stain-d-charcoal-rot-t-trejfnoquot-vquotquotquot-quot-quot-d-ile-the-sideshoots-are-lue-as-ttev-are-supported-by-the-secondary-roots-formed-at-the-nodes-of-the-vines-wlj-potato-artificially-inoculated-with-sclerotium-rolfsii-g-net-necrosfs-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-thes-RCCKE2.jpg ". Diseases of truck crops and their control. Plants -- Diseases. Fig. Sweet Potato Diseases. a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot ^ T Tre'Jfn^o"'?'. V^';.'""'"'' "^.^'^^ ^"' '^ d^^'^' ^^ile the si'de'shoots are lu^e as ttev are supported by the secondary roots formed at the nodes of the vines /,wlJ potato artificially inoculated with Sclerotium Rolfsii. g. net necrosfs. ^'. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of thes Stock Photo")
RMRCCKE2–. Diseases of truck crops and their control. Plants -- Diseases. Fig. Sweet Potato Diseases. a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot ^ T Tre'Jfn^o"'?'. V^';.'""'"'' "^.^'^^ ^"' '^ d^^'^' ^^ile the si'de'shoots are lu^e as ttev are supported by the secondary roots formed at the nodes of the vines /,wlJ potato artificially inoculated with Sclerotium Rolfsii. g. net necrosfs. ^'. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of thes
RMRCD9XX–. Diseases of cotton, sugar cane, forest trees, ornamentals and miscellaneous plants in the United States in 1919. Fiber plants Diseases and pests United States; Sugar crops Diseases and pests United States; Trees Diseases and pests United States; Plants, Ornamental Diseases and pests United States. Red rot and red stripe were reported from Georgia, Florida, Alatama, Louisiana and Texas. In Louisiana the disease was prevalent. In Alatama it was atundant. Pit.. 5*^. Showing the location of areas of red rot in the southern cane belt. Sheath rot caused by Sclerotium rolfsii Sacc,. Sheath rot was
RMRCDPP1–. Diseases of economic plants. Plant diseases. Fig. 76. — Fig in well-advanced stage of fruit-rot. Original. considerable damage, causing premature falling of leaves. The rust appears as brown spots upon the leaf. Leaf-blight {Cercospora bol- leana (Thtim.) Speg.). — This blight has been noted in the United States, though l)ut slight attention has been given it. It causes injury similar to that of rust. Other diseases of the fig are: a root-knot due to nematodes; a Rhizoctonia leaf-blight; Southern-blight (Sderotium rolfsii); Cankers due to Mac- rophoma, Libertella, and Tubercularia; Limb-blig
RMRCCKA5–. Diseases of truck crops and their control. Plants -- Diseases. Fig. 63. Potato Diseases. a. Powdery dry rot, b. Rhizoctonia lesion on young potato sprouts (after W. A. Orton), c. Rhizoctonia sclerotia on seed potato tubers, d. melters, artificially in- duced by inoculating with a pure culture of Sderoltum Rolfsii. e. pure culture of 5. Rolfsii.. 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. New
RMRCC6AT–. Diseases of economic plants. Plant diseases. 340 Diseases of Economic Plants PASPALUM Ergot '^^^ {Claviceps paspali S. & H. and C. rolfsii S. & H.). — The ergots displacing the grain are somewhat smaller than a pea, irregularly globular in outline, and pale yellow in color. Stock poisoning from pasturing on grass bearing these ergots is com- mon in the South. Mow- ing the green heads before the ergot develops will les- sen the danger. QUACKGRASS (Agropyron) Smut (Urocystis agropyri (Preuss.) Schroet and Usti- lago). — These smuts re- semble each other in the general appearance of the
RMRCCKC8–. Diseases of truck crops and their control. Vegetables. Fig. 63. Potato Diseases. a. Powdery dry rot, b. Rhizoctonia lesion on young potato sprouts (after W. A. Orton), c. Rhizoctonia sclerotia on seed potato tubers, d. melters, artificially in- duced by inoculating with a pure culture of Sderotium Roljsii. e. pure culture of S. Rolfsii.. 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, J. J. (Jacob Joseph), 188
RMRCDP71–. Diseases of flowers and other ornamentals. Flowers; Plant diseases. 1. Fig. 12.—Iris rust. forms numerous, small seedlike bodies or sclerotia (fig. 11) on the sur- face of the affected plants. 8. Rolfsii also attacks sugar beets and many other hosts. Affected rhizomes should be dug out and destroyed. The remaining ones should be thinned and replanted, if possible in a new place. Rust.—Powdery pustules of reddish-brown spores of a rust fungus, Puccinia iridis, may appear on the leaves (fig. 12), which may be killed prematurely if the infection is severe. Most of the commonest species and vari
RMRCDPP3–. Diseases of economic plants. Plant diseases. 146 Diseases of Economic Plants. Fig. 76. — Fig in well-advanced stage of fruit-rot. Original. considerable damage, causing premature falling of leaves. The rust appears as brown spots upon the leaf. Leaf-blight {Cercospora bol- leana (Thtim.) Speg.). — This blight has been noted in the United States, though l)ut slight attention has been given it. It causes injury similar to that of rust. Other diseases of the fig are: a root-knot due to nematodes; a Rhizoctonia leaf-blight; Southern-blight (Sderotium rolfsii); Cankers due to Mac- rophoma, Libert
RMRCDPJ0–. Diseases of economic plants. Plant diseases. 220 DISEASES OF ECONOMIC PLANTS many states. From 50 to 100 per cent damage was reported from Nebraska in 1905. The disease is discussed under watermelon. Southern blight (Sclerotium Rolfsii Sacc. in litt.).— A large percentage of the cantaloupe crop in the southern-. Fig. 101. —Leaf spotted with downy mildew. Original. most states is often destroyed by this disease. It is par- ticularly noticeable on fruit upon the side touching the ground, first as a slight rot, followed by a white fringe of fungous threads which soon surround the whole fruit. L
RMRCC6J9–. Diseases of economic plants. Plant diseases. 146 Diseases of Economic Plants. considerable damage, causing premature falling of leaves. The rust appears as brown spots upon the leaf. Leaf-blight {Cercospora bol- leana (Thiim.) Speg.). —This blight has been noted in the United States, though but slight attention has been given it. It causes injury similar to that of Fig. 76. — Fig in well-advanced rust, of fruit-rot. Original. Other diseases of the fig are: a Rhizoctonia leaf-blight; a root-knot due to nematodes; Southern-blight (Sclerotium rolfsii); Cankers due to Mac- rophoma, Libertella, a
RMRCDPD9–. Diseases of economic plants. Plant diseases. 340 Diseases of Economic Plants PASPALUM Ergot ^^^ {Claviceps paspali S. & H. and C. rolfsii S. & H.). — The ergots displacing the grain are somewhat smaller than a pea, irregularly globular in outline, and pale yellow in color. Stock poisoning from pasturing on grass bearing these ergots is com- mon in the South. Mow- ing the green heads before the ergot develops will les- sen the danger. QUACKGRASS (Agropyron) Smut (Urocystis agropyri (Preuss.) Schroet and Usti- lago). — These smuts re- semble each other in the general appearance of the
RMRCDPJK–. Diseases of economic plants. Plant diseases. Vegetable and Field Crops 215 PEPPER Southern-blight, wilt ^^ {Sclerotium rolfsii Sacc). — Blight shows itself first by a slight drooping of the leaf tips by day,. Fig. 117. — Pepper plant showing effects of the Southern-blight. After Fulton. followed by night recovery. The wilt becomes more pro- nounced on succeeding days until in the third or fourth day the leaves wilt permanently, lose color, dry, and soon fall. These stages may succeed each other so rapidly as to ap- pear almost simultaneous. The roots appear normal; but on the stem near the g
![. Diseases of truck crops and their control . Vegetables. Fig. 67. Tomato Diseases. ti. Cladosporium leaf mold, b. conidiophores of Cladosporiutn fulvum, c. conidia of C. fulvum, b. and c. after Southworth), d. two mm-im.^ ^wCno^-vw^:;-^-, it^u).,£.n^.i-,.;,,.",'. Scleroiium Rolfsii, e. sunburn, /. Macrosporium, r-. 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. D Stock Photo](https://c8.alamy.com/comp/RDE06M/diseases-of-truck-crops-and-their-control-vegetables-fig-67-tomato-diseases-ti-cladosporium-leaf-mold-b-conidiophores-of-cladosporiutn-fulvum-c-conidia-of-c-fulvum-b-and-c-after-southworth-d-two-mm-im-wcno-vw-ituni-quot-scleroiium-rolfsii-e-sunburn-macrosporium-r-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-d-RDE06M.jpg ". Diseases of truck crops and their control . Vegetables. Fig. 67. Tomato Diseases. ti. Cladosporium leaf mold, b. conidiophores of Cladosporiutn fulvum, c. conidia of C. fulvum, b. and c. after Southworth), d. two mm-im.^ ^wCno^-vw^:;-^-, it^u).,£.n^.i-,.;,,.",'. Scleroiium Rolfsii, e. sunburn, /. Macrosporium, r-. 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. D Stock Photo")
RMRDE06M–. Diseases of truck crops and their control . Vegetables. Fig. 67. Tomato Diseases. ti. Cladosporium leaf mold, b. conidiophores of Cladosporiutn fulvum, c. conidia of C. fulvum, b. and c. after Southworth), d. two mm-im.^ ^wCno^-vw^:;-^-, it^u).,£.n^.i-,.;,,.",'. Scleroiium Rolfsii, e. sunburn, /. Macrosporium, r-. 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. D
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