| 5389428 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5485066 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485067 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485068 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485059 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485060 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485061 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485062 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485063 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485064 |
wheat stem rust |
Puccinia graminis |
Poa Pratensis 'Langara' |
| 5485065 |
wheat stem rust |
Puccinia graminis |
Poa pratensis 'Langara' |
| 5485073 |
Rostratum leaf spot |
Exserohilum rostratum |
Symptoms on bermudagrass from a home lawn, caused by the fungus Exserohilum rostratum. |
| 5485072 |
Rostratum leaf spot |
Exserohilum rostratum |
Note the protuberant hilum and the darker colored first and last septa. |
| 5417132 |
gray leaf spot |
Magnaporthe grisea |
|
| 5417120 |
Drechslera leaf spot |
Drechslera spp. |
foliar symptoms |
| 5417116 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5417119 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5417102 |
dead spot |
Ophiosphaerella agrostidis |
|
| 5417103 |
dead spot |
Ophiosphaerella agrostidis |
|
| 5417118 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5417099 |
Ascochyta fungi |
Ascochyta spp. |
Foliar symptoms |
| 5417133 |
gray leaf spot |
Magnaporthe grisea |
|
| 5417134 |
gray leaf spot |
Magnaporthe grisea |
|
| 5417115 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5417097 |
Ascochyta fungi |
Ascochyta spp. |
|
| 5417098 |
Ascochyta fungi |
Ascochyta spp. |
|
| 5405265 |
leaf blight |
Drechslera gigantea |
Overall view of Reed canarygrass with tan blotches from Zonate leaf spot. |
| 5405266 |
leaf blight |
Drechslera gigantea |
Circular to oval tan-colored spots which coalesce to form large blighted areas. |
| 5405267 |
leaf blight |
Drechslera gigantea |
Circular to oval tan-colored spots which coalesce to form large blighted areas. |
| 5405268 |
leaf blight |
Drechslera gigantea |
Close-up of one area of blighted tissue. |
| 5405269 |
leaf blight |
Drechslera gigantea |
Close-up of one spot showing short, dark condiophores and longer, lighter-colored spores. |
| 5405270 |
leaf blight |
Drechslera gigantea |
Close-up of one spot showing short, dark condiophores and longer, lighter-colored spores. |
| 5405271 |
leaf blight |
Drechslera gigantea |
Conidiophores and stained spores of Drechslera gigantea on leaf surface. |
| 5405272 |
leaf blight |
Drechslera gigantea |
Measurement of single stained spore of Drechslera gigantea on leaf surface. |
| 5405273 |
leaf blight |
Drechslera gigantea |
Single stained spore of Drechslera gigantea on leaf surface. |
| 5405274 |
leaf blight |
Drechslera gigantea |
Single stained spore of Drechslera gigantea on leaf surface. |
| 5405275 |
leaf blight |
Drechslera gigantea |
Measurement of single stained spore of Drechslera gigantea on leaf surface. |
| 5405306 |
gray leaf spot |
Magnaporthe grisea |
Overall symptoms of newly-seeded tall fescue infected with Pyricularia grisea the cause of Gray leaf spot. |
| 5405307 |
gray leaf spot |
Magnaporthe grisea |
Close-up of collapsed, newly-seeded tall fescue infected with Pyricularia grisea the cause of Gray leaf spot. |
| 5405308 |
gray leaf spot |
Magnaporthe grisea |
Individual spot infections of Pyricularia grisea the cause of Gray leaf spot. |
| 5405309 |
gray leaf spot |
Magnaporthe grisea |
Close-up of two spots infected with Pyricularia grisea the cause of Gray leaf spot. |
| 5405310 |
gray leaf spot |
Magnaporthe grisea |
Close-up of a single spot infected with Pyricularia grisea the cause of Gray leaf spot. There is a patch of gray-green colored condiophores and conidia just above and along the midrib. |
| 5405311 |
gray leaf spot |
Magnaporthe grisea |
Close-up of two spots infected with Pyricularia grisea the cause of Gray leaf spot. |
| 5405312 |
gray leaf spot |
Magnaporthe grisea |
Close-up of a single spot infected with Pyricularia grisea the cause of Gray leaf spot. There is a patch of gray-green colored condiophores and conidia between two main veins of the leaf. |
| 5405313 |
gray leaf spot |
Magnaporthe grisea |
An image of the spores and stained mycelia of the fungus, Pyricularia grisea. |
| 5405314 |
gray leaf spot |
Magnaporthe grisea |
Close-up of the spores of the fungus, Pyricularia grisea along with some stained mycelia. |
| 5393116 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5393117 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5393079 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5393077 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5393078 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5393075 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5393076 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5393074 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5389426 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5337076 |
Ascochyta fungi |
Ascochyta spp. |
fungal pycnidia |
| 5337077 |
Ascochyta fungi |
Ascochyta spp. |
|
| 5368478 |
anthracnose |
Colletotrichum graminicola |
|
| 5368479 |
anthracnose |
Colletotrichum graminicola |
|
| 5368480 |
anthracnose |
Colletotrichum graminicola |
|
| 5368951 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
|
| 5368477 |
anthracnose |
Colletotrichum graminicola |
View of a putting green with dead patches of basal rot Anthracnose. |
| 5368950 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
The sexual spore stage is seen as many brown ascus sacs containing “ascospores”. |
| 5368457 |
anthracnose |
Colletotrichum graminicola |
Several dark, spore-producing bodies called “acervuli” can be seen at the base of the stem. |
| 5368458 |
anthracnose |
Colletotrichum graminicola |
Several dark, spore-producing bodies called “acervuli” can be seen at the base of the stem. |
| 5368459 |
anthracnose |
Colletotrichum graminicola |
Several dark, spore-producing bodies called “acervuli” can be seen at the base of the stem. |
| 5368460 |
anthracnose |
Colletotrichum graminicola |
Several dark, spore-producing bodies called “acervuli” can be seen at the base of the stem. |
| 5368787 |
anthracnose |
Colletotrichum graminicola |
Microscopic view of an acervulus with long, sterile hyphae called setae. |
| 5368788 |
anthracnose |
Colletotrichum graminicola |
Infection mat of Colletotrichum graminicola. |
| 5368949 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
The sexual spore stage is seen as “ascospores” within an “ascus”. |
| 5368957 |
anthracnose |
Colletotrichum graminicola |
Close-up of a core with plants dying. |
| 5368958 |
anthracnose |
Colletotrichum graminicola |
Several dark, spore-producing bodies called “acervuli” can be seen at the base of the stem. |
| 5368959 |
anthracnose |
Colletotrichum graminicola |
Several dark, spore-producing bodies called “acervuli” can be seen at the base of the stem. |
| 5332095 |
Pyrenophora leaf blight |
Drechslera dictyoides |
|
| 5333010 |
spring dead spot |
Ophiosphaerella korrae |
Pennsylvania State University field trials |
| 5333007 |
spring dead spot |
Ophiosphaerella korrae |
Pennsylvania State University field trials |
| 5333008 |
spring dead spot |
Ophiosphaerella korrae |
Pennsylvania State University field trials |
| 5333009 |
spring dead spot |
Ophiosphaerella korrae |
Pennsylvania State University field trials |
| 5359703 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Lawn severely affected by infection with Helminthosporium spp., Bipolaris sp., and Exserohilum sp. fungi. |
| 5359686 |
pink snow mold |
Microdochium nivale |
Hiwan Golf Club in Colorado, showing symptoms of infection with pink snow mold in 1980. |
| 5359702 |
Ascochyta fungi |
Ascochyta spp. |
Lawn in Fort Collins, Colorado, showing signs of infection with an Ascochyta sp. fungus in 1989. |
| 5359685 |
pink snow mold |
Microdochium nivale |
Brown patches in turf, evidence of infection with Fusarium snow mold at the Hiwan Golf Club, 1974. |
| 5357036 |
sharp eyespot |
Ceratobasidium cereale |
Lawn showing symptoms of Yellow Patch, caused by infection with Rhizoctonia cerealis. Lens cap provided for scale. |
| 5357035 |
sharp eyespot |
Ceratobasidium cereale |
Lawn showing symptoms of Yellow Patch, caused by infection with Rhizoctonia cerealis. |
| 5357034 |
snow molds |
Typhula spp. |
Golf course severely infected with gray snow mold, also known as Typhula blight (Typhula spp.) - Vail, Colorado. |
| 5356731 |
Drechslera leaf spot |
Drechslera spp. |
Turf showing signs of infection with Melting Out fungus. |
| 5356730 |
Drechslera leaf spot |
Drechslera spp. |
Turf showing signs of infection with Melting Out fungus. |
| 5356728 |
snow molds |
Typhula spp. |
Snow mold infestation (Typhula sp.) in turf. |
| 5359691 |
snow mold |
Typhula incarnata |
Symptoms of Typhula blight (snow mold) on the golf course at Vail, Colorado, in 1982. The pen is pointing to sclerotia. |
| 5359690 |
snow mold |
Typhula incarnata |
Close-up view of symptoms of Typhula blight (snow mold) on the golf course at Vail, Colorado, in 1982. |
| 5359688 |
snow mold |
Typhula incarnata |
Symptoms of Typhula blight (snow mold) on the golf course at Vail, Colorado, in 1982. |
| 5359689 |
snow mold |
Typhula incarnata |
Symptoms of Typhula blight (snow mold) on the golf course at Vail, Colorado, in 1982. |
| 5359687 |
pink snow mold |
Microdochium nivale |
Symptoms of pink snow mold, Monographella nivalis (also known as Microdochium nivale), in an area missed during spraying of fungicide. |
| 5356727 |
snow molds |
Typhula spp. |
Fungicide test plots at the Breckenridge, Colorado, golf course in 1997, researching effective control of snow mold. |
| 5220079 |
Cercospora leaf spot |
Cercospora fusimaculans |
|
| 5220080 |
Cercospora leaf spot |
Cercospora fusimaculans |
|
| 5220081 |
Cercospora leaf spot |
Cercospora fusimaculans |
|
