| Image |
Descriptor |
Description |
Photographer |
| 5390540 |
Culture |
Sheath blight pathogen culture on PDA; isolated from rice |
Milton Rush |
| 5390541 |
Culture |
Rhizoctonia solani mycelium from culture on PDA; isolated from rice; rice sheath blight |
Donald Groth |
| 4824022 |
Development |
Infections occur on seedlings in sandy soils as sand, washed by rain and irrigation ("sand splash"), accumulates at the base of the seedlings, creating a microenvironment of reduced aeration and increased relative humidity which favors infection. |
Edward L. Barnard |
| 4824020 |
Infestation |
Infection centers in beds |
Edward L. Barnard |
| 4824021 |
Infestation |
Infection center in bed. |
Edward L. Barnard |
| 5258020 |
Research |
Fungicide experiment |
Division of Plant Industry Archive |
| 5258021 |
Research |
Fungicide experiment |
Division of Plant Industry Archive |
| 5258022 |
Research |
Fungicide experiment |
Division of Plant Industry Archive |
| 5258023 |
Research |
Fungicide experiment |
Division of Plant Industry Archive |
| 5258024 |
Research |
Fungicide experiment |
Division of Plant Industry Archive |
| 5258025 |
Research |
Fungicide experiment |
Division of Plant Industry Archive |
| 5258026 |
Research |
Fungicide experiment |
Division of Plant Industry Archive |
| 5258027 |
Research |
Fungicide experiment |
Division of Plant Industry Archive |
| 5258028 |
Research |
Fungicide experiment |
Division of Plant Industry Archive |
| 5261050 |
Sign |
|
Division of Plant Industry Archive |
| 5261057 |
Sign |
|
Division of Plant Industry Archive |
| 5265018 |
Sign |
sclerotia |
Division of Plant Industry Archive |
| 5265019 |
Sign |
sclerotia |
Division of Plant Industry Archive |
| 5357203 |
Sign |
Sugar beet plant pulled up and sliced open to show signs of infection with Rhizoctonia crown rot (Rhizoctonia solani) in the root. |
Howard F. Schwartz |
| 5357204 |
Sign |
Close-up view of sugar beet root sliced open to show signs of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
Howard F. Schwartz |
| 5368517 |
Sign |
Mycelium of the fungus Rhizoctonia solani. |
Paul Bachi |
| 5368518 |
Sign |
Mycelium of the fungus Rhizoctonia solani. |
Paul Bachi |
| 5261053 |
Sign |
|
Division of Plant Industry Archive |
| 5336081 |
Sign |
|
Mary Ann Hansen |
| 5356721 |
Sign |
Turf showing signs of infection with Brown Patch (Rhizoctonia solani) after winter. |
William M. Brown Jr. |
| 5356722 |
Sign |
Turf showing signs of infection with Brown Patch (Rhizoctonia solani). |
William M. Brown Jr. |
| 5390543 |
Sign |
Rice sheath blight symptoms (snake skin appearance) and signs (black sclerotia) on a rice leaf |
Donald Groth |
| 5390547 |
Sign |
Rice sheath blight symptoms and pathogen signs (sclerotia) on rice head |
Donald Groth |
| 5261054 |
Stand |
|
Division of Plant Industry Archive |
| 5261055 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261056 |
Symptoms |
|
Division of Plant Industry Archive |
| 5336088 |
Symptoms |
|
Mary Ann Hansen |
| 5336089 |
Symptoms |
|
Mary Ann Hansen |
| 5336090 |
Symptoms |
|
Mary Ann Hansen |
| 5337002 |
Symptoms |
|
Mary Ann Hansen |
| 5390544 |
Symptoms |
Variation of early Rice sheath blight symptoms on rice stems- from left to right- water soaked lesion, dark resistance reaction or fungicide application lesion, and dried lesions |
Donald Groth |
| 5390545 |
Symptoms |
Snake skin like Rice sheath blight symptoms on rice leaves |
Donald Groth |
| 5390546 |
Symptoms |
Snake skin like Rice sheath blight symptoms on rice stems |
Donald Groth |
| 5356983 |
Symptoms |
Close-up view of symptoms of sheath blight (Rhizoctonia solani) on a rice stalk. |
William M. Brown Jr. |
| 5357199 |
Symptoms |
Sugar beet plant showing advanced symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
Howard F. Schwartz |
| 5357200 |
Symptoms |
Sugar beet plant showing symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
Howard F. Schwartz |
| 5357201 |
Symptoms |
Sugar beet plant showing advanced symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
Howard F. Schwartz |
| 5357202 |
Symptoms |
Sugar beet plant pulled up to show root symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
Howard F. Schwartz |
| 5368549 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. Variety VA 359 |
Paul Bachi |
| 5368550 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them.Variety VA 359 |
Paul Bachi |
| 5368551 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. Variety VA 359 |
Paul Bachi |
| 5368552 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. Variety VA 359 |
Paul Bachi |
| 5368655 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. Dark variety DF 911. |
Paul Bachi |
| 5368656 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. Dark variety DF 911. |
Paul Bachi |
| 5368657 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. Dark variety DF 911. |
Paul Bachi |
| 5368980 |
Symptoms |
Irregular tan blotches on leaf blades. |
Paul Bachi |
| 5368981 |
Symptoms |
Tan/brown leaf spots with spore-producing bodies ("pycnidia") within the spots |
Paul Bachi |
| 5369029 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. |
Paul Bachi |
| 5369030 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. |
Paul Bachi |
| 5369031 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. |
Paul Bachi |
| 5369032 |
Symptoms |
When the fungus first infects the leaf, it produces a dark green spot. As the infection process continues,the spots turn papery thin and can drop out. Spots can also enlarge and have a bull's eye look to them. |
Paul Bachi |
| 5390538 |
Symptoms |
Field view of severe early upper rice leaf infection symptoms of rice sheath blight |
Donald Groth |
| 5390539 |
Symptoms |
Field view of severe late upper leaf infection symptoms of rice sheath blight |
Donald Groth |
| 5357589 |
Symptoms |
Sugar beet plant showing advanced symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
Howard F. Schwartz |
| 5357590 |
Symptoms |
Sugar beet root cut open to show symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
Howard F. Schwartz |
| 5358990 |
Symptoms |
Symptoms of web blight (Thanatephorus cucumeris) on the foliage of dry beans. |
Howard F. Schwartz |
| 5358991 |
Symptoms |
Symptoms of web blight (Thanatephorus cucumeris) on the foliage of dry beans. |
Howard F. Schwartz |
| 5358992 |
Symptoms |
Symptoms of web blight (Thanatephorus cucumeris) on the foliage of dry beans. |
Howard F. Schwartz |
| 5358993 |
Symptoms |
Symptoms of web blight (Thanatephorus cucumeris) on the foliage of dry beans. |
Howard F. Schwartz |
| 5358994 |
Symptoms |
Symptoms of web blight (Thanatephorus cucumeris) on the pods of dry beans. |
Howard F. Schwartz |
| 5359036 |
Symptoms |
Early death of potato caused by Rhizoctonia solani in the field. |
Howard F. Schwartz |
| 5360375 |
Symptoms |
Drybean leaflets showing symptoms of web blight caused by Thanatephorus cucumeris. |
Howard F. Schwartz |
| 5360376 |
Symptoms |
Drybean leaflets showing symptoms of web blight caused by Thanatephorus cucumeris. |
Howard F. Schwartz |
| 5360377 |
Symptoms |
Drybean plants showing symptoms of web blight caused by Thanatephorus cucumeris. |
Howard F. Schwartz |
| 5360378 |
Symptoms |
Drybean pods showing symptoms of web blight caused by Thanatephorus cucumeris. |
Howard F. Schwartz |
| 5361370 |
Symptoms |
Roots of drybeans showing advanced symptoms of Rhizoctonia root rot caused by Rhizoctonia solani. |
Howard F. Schwartz |
| 5361371 |
Symptoms |
Roots of drybean seedlings showing early symptoms of Rhizoctonia root rot caused by Rhizoctonia solani. |
Howard F. Schwartz |
| 5361372 |
Symptoms |
Drybean plants showing symptoms of Rhizoctonia and Pythium root rots caused by Rhizoctonia solani and Pythium spp. respectively in the field. |
Howard F. Schwartz |
| 5368513 |
Symptoms |
Plants usually rot a the soilless mix surface and continue to rot until the entire plant dies. |
Paul Bachi |
| 5368514 |
Symptoms |
Plants usually rot a the soilless mix surface and continue to rot until the entire plant dies. |
Paul Bachi |
| 5368515 |
Symptoms |
Plants usually rot a the soilless mix surface and continue to rot until the entire plant dies. |
Paul Bachi |
| 5368516 |
Symptoms |
Plants usually rot at the soilless mix surface and continue to rot until the entire plant dies. |
Paul Bachi |
| 5265020 |
Symptoms |
|
Division of Plant Industry Archive |
| 5331077 |
Symptoms |
|
Robert Wick |
| 5332055 |
Symptoms |
|
Mary Ann Hansen |
| 5332056 |
Symptoms |
|
Mary Ann Hansen |
| 5332058 |
Symptoms |
|
Mary Ann Hansen |
| 5332089 |
Symptoms |
|
Mary Ann Hansen |
| 5332090 |
Symptoms |
|
Mary Ann Hansen |
| 5261058 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261059 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261060 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261061 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261062 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261063 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261064 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261065 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261066 |
Symptoms |
|
Division of Plant Industry Archive |
| 5262004 |
Symptoms |
|
Division of Plant Industry Archive |
| 5262041 |
Symptoms |
|
Division of Plant Industry Archive |
| 5262042 |
Symptoms |
|
Division of Plant Industry Archive |
| 5262089 |
Symptoms |
|
Division of Plant Industry Archive |
| 5265017 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261051 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261052 |
Symptoms |
|
Division of Plant Industry Archive |
| 4824023 |
Symptoms |
Infections occur on seedlings in sandy soils as sand, washed by rain and irrigation ("sand splash"), accumulates at the base of the seedlings, creating a microenvironment of reduced aeration and increased relative humidity which favors infection. |
Edward L. Barnard |
| 4824062 |
Symptoms |
Wilted and discolored infected seedlings. |
Edward L. Barnard |
| 4824064 |
Symptoms |
Loss of lower foliage on infected seedlings. |
Edward L. Barnard |
| 4824065 |
Symptoms |
Foliage discoloration and loss on infected seedling. |
Edward L. Barnard |
| 5076092 |
Symptoms |
belly rot of cucumber; brown, irregular shaped lesions on the bottom of fruit. May have crusty appearance as lesions dry. |
David B. Langston |
| 5258059 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258060 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258061 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258062 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258063 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258064 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258065 |
Symptoms |
|
Division of Plant Industry Archive |
| 5261049 |
Symptoms |
|
Division of Plant Industry Archive |
| 0027051 |
Symptoms |
|
Paul Bertrand |
| 0027056 |
Symptoms |
|
Paul Bertrand |
| 0027057 |
Symptoms |
|
Paul Bertrand |
| 1234199 |
Symptoms |
|
Clemson University - USDA Cooperative Extension Slide Series |
| 1402049 |
Symptoms |
This soil-borne fungus infects the lower stem of the tobacco plant. Symptoms begin on seedlings and transplants as a dark brown lesion on the stem near or below ground level. Lesions vary in size and number depending on environmental conditions. In wet, cool weather, the lesions may enlarge upward and around the stem until the plant falls over. This may be confused with black shank or Pythium damping-off. On older plants, a dark brown lesion up to several inches long occurs at or near the soil line. It may girdle the stalk which becomes hard and brittle. The stalk may break at this lesion. The plant may be stunted with yellow to brown and/or wilted leaves. Roots usually show no evidence of decay. |
R.J. Reynolds Tobacco Company Slide Set |
| 1402050 |
Symptoms |
This soil-borne fungus infects the lower stem of the tobacco plant. Symptoms begin on seedlings and transplants as a dark brown lesion on the stem near or below ground level. Lesions vary in size and number depending on environmental conditions. In wet, cool weather, the lesions may enlarge upward and around the stem until the plant falls over. This may be confused with black shank or Pythium damping-off. On older plants, a dark brown lesion up to several inches long occurs at or near the soil line. It may girdle the stalk which becomes hard and brittle. The stalk may break at this lesion. The plant may be stunted with yellow to brown and/or wilted leaves. Roots usually show no evidence of decay. |
R.J. Reynolds Tobacco Company Slide Set |
| 1436001 |
Symptoms |
Post-emergence dying of cotton seedlings. The fungi Pythium and Fusarium cause similar damage to seedlings. |
Clemson University - USDA Cooperative Extension Slide Series |
| 1436108 |
Symptoms |
to fruit |
Clemson University - USDA Cooperative Extension Slide Series |
| 1436110 |
Symptoms |
also called "belly rot" |
Clemson University - USDA Cooperative Extension Slide Series |
| 1436173 |
Symptoms |
"Soil Rot" |
Clemson University - USDA Cooperative Extension Slide Series |
| 1440044 |
Symptoms |
This fungus usually appears first in the plant bed, but infections occur at any growth stage. Sore shin appears as a brown discoloration of the transplant stem near or below the soil line. The affected area may increase in size after the plant is set in the field, sometimes extending several inches up the stalk. The stalk of an infected plant becomes brittle and may break up easily under pressure. Lower leaves of older plants may turn yellow; the plant is often stunted. Plants may wilt during the heat of the day. Diseased plants usually appear scattered in the field. In advanced stages of sore shin, large stalks may be dry and brown inside. Stalks with only slight infections produce near normal growth and yields unless the plants become stressed. Symptoms of sore shin may be confused with stem rot or black shank; accurate diagnosis requires microscopic examination. |
R.J. Reynolds Tobacco Company Slide Set |
| 1440045 |
Symptoms |
This fungus usually appears first in the plant bed, but infections occur at any growth stage. Sore shin appears as a brown discoloration of the transplant stem near or below the soil line. The affected area may increase in size after the plant is set in the field, sometimes extending several inches up the stalk. The stalk of an infected plant becomes brittle and may break up easily under pressure. Lower leaves of older plants may turn yellow; the plant is often stunted. Plants may wilt during the heat of the day. Diseased plants usually appear scattered in the field. In advanced stages of sore shin, large stalks may be dry and brown inside. Stalks with only slight infections produce near normal growth and yields unless the plants become stressed. Symptoms of sore shin may be confused with stem rot or black shank; accurate diagnosis requires microscopic examination. |
R.J. Reynolds Tobacco Company Slide Set |
| 1525397 |
Symptoms |
|
Department of Plant Pathology Archive |
| 1525398 |
Symptoms |
|
Department of Plant Pathology Archive |
| 1525399 |
Symptoms |
|
Department of Plant Pathology Archive |
| 1563067 |
Symptoms |
Belly rot usually begins on the underside and blossom end of the fruit where contact is made with the soil. Surface of lesions become crusty. Usually the infection remains on the surface and the fruit does not rot. |
Charles Averre |
| 1563068 |
Symptoms |
Belly rot usually begins on the underside and blossom end of the fruit where contact is made with the soil. Surface of lesions become crusty. Usually the infection remains on the surface and the fruit does not rot. |
Charles Averre |
| 1563069 |
Symptoms |
Early infection. Belly rot usually begins on the underside and blossom end of the fruit where contact is made with the soil. Surface of lesions become crusty. Usually the infection remains on the surface and the fruit does not rot. |
Charles Averre |
| 5258029 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258030 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258031 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258032 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258033 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258034 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258035 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258036 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258037 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258039 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258040 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258041 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258042 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258043 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258044 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258045 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258046 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258047 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258048 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258049 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258050 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258051 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258052 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258053 |
Symptoms |
|
Division of Plant Industry Archive |
| 5258054 |
Symptoms |
cause of aerial potato tubers |
Division of Plant Industry Archive |
| 5258055 |
Symptoms |
cause of aerial potato tubers |
Division of Plant Industry Archive |
| 5258056 |
Symptoms |
|
Division of Plant Industry Archive |
| 5394479 |
Symptoms |
Rhizoctonia root rot (bare patch) |
Mary Burrows |
| 5394480 |
Symptoms |
Glyphosate application April 16 Planted April 17, 2008 |
Mary Burrows |
| 5394481 |
Symptoms |
Glyphosate application April 16 Planted April 17, 2008 |
Mary Burrows |
| 5394482 |
Symptoms |
Glyphosate application April 16 Planted April 17, 2008 |
Mary Burrows |
| 5394483 |
Symptoms |
Glyphosate application April 16 Planted April 17, 2008 |
Mary Burrows |
| 5395236 |
Symptoms |
Rhizoctonia root rot (bare patch), Spear tipping due to Rhizoctonia root rot |
Mary Burrows |
| 5390542 |
Symptoms |
Water soaked initial rice sheath blight lesion symptoms on rice stems |
Donald Groth |
| 5258057 |
Testing |
|
Division of Plant Industry Archive |
| 5258058 |
Testing |
|
Division of Plant Industry Archive |
