| 5492323 |
leaf spot of maize |
Bipolaris zeicola |
NCLS spores developing from a lesion on a leaf |
| 5492318 |
early blight |
Alternaria solani |
External and internal view of Early Blight lesions; note symptoms within this tuber are shallow. |
| 5492319 |
early blight |
Alternaria solani |
Large lesion on tuber infected with Early Blight pathogen Alternaria solani |
| 5492320 |
early blight |
Alternaria solani |
Shallow symptoms in potato tuber flesh where skin cut away from lesion of tuber infected with Alternaria solani |
| 5492303 |
early blight |
Alternaria solani |
Four Alternaria solani isolates growing on acidified potato dextrose agar (APDA) and showing colony variation and yellow pigmentation of the agar. |
| 5486243 |
apple scab |
Venturia inaequalis |
Apple scab on crabapple |
| 5486045 |
maple cankers |
Stegonsporium spp. |
Conidia |
| 5486046 |
maple cankers |
Stegonsporium spp. |
Acervuli on branch |
| 5486042 |
maple cankers |
Stegonsporium spp. |
Acervuli on branch |
| 5486043 |
maple cankers |
Stegonsporium spp. |
Conidia |
| 5486044 |
maple cankers |
Stegonsporium spp. |
Vertical section of acervulus with conidia |
| 1573937 |
Phoma blights |
Phoma spp. |
Close-up of diseased fruit. September 1997 |
| 1573859 |
early blight |
Alternaria solani |
Close up of blighted stems. September 1997 |
| 1573856 |
early blight |
Alternaria solani |
Close up of diseased leaves. September 1997 |
| 1573857 |
early blight |
Alternaria solani |
Close up of blighted leaves. September 1997 |
| 1573858 |
early blight |
Alternaria solani |
Close up of blighted leaves. September 1997 |
| 1573853 |
early blight |
Alternaria solani |
Several diseased leaves. September 1997 |
| 1573854 |
early blight |
Alternaria solani |
Close up of diseased leaf. September 1997 |
| 1573855 |
early blight |
Alternaria solani |
Close up of diseased leaves. September 1997 |
| 1573851 |
early blight |
Alternaria solani |
Close up of leaf with initial symptoms. September 1997 |
| 1573852 |
early blight |
Alternaria solani |
Close up of blighted leaf. September 1997 |
| 1573849 |
early blight |
Alternaria solani |
diseased plant. September 1997 |
| 1573850 |
early blight |
Alternaria solani |
Diseased plants and fruit. September 1997 |
| 1573424 |
brown spot |
Alternaria alternata |
Secondary organisms will colonize injured tissue following chilling injury. July 1997 |
| 1573423 |
brown spot |
Alternaria alternata |
Secondary organisms will colonize injured tissue following chilling injury. July 1997 |
| 5492239 |
apple scab |
Venturia inaequalis |
scab on fruit |
| 5389428 |
spring dead spot |
Ophiosphaerella korrae |
A Kentucky bluegrass (Poa pratensis) lawn showing symptoms of necrotic ring spot infection caused by Leptosphaeria korrae. |
| 5487886 |
Phoma blights |
Phoma spp. |
dieback |
| 1572870 |
black spot |
Alternaria brassicicola |
Leaf spot on cabbage caused by Alternaria brassicicola or A. brassicae. April 1997? |
| 1572869 |
black spot |
Alternaria brassicicola |
Leaf spot on cabbage caused by Alternaria brassicicola or A. brassicae. April 1997? |
| 1572868 |
black spot |
Alternaria brassicicola |
Chinese cabbage leaf showing many lesions caused by Alternaria brassicicola. April 1997? |
| 1572867 |
black spot |
Alternaria brassicicola |
Chinese cabbage leaf showing many lesions caused by Alternaria brassicicola. April 1997? |
| 1572866 |
black spot |
Alternaria brassicicola |
Chinese cabbage leaf showing many young lesions caused by Alternaria brassicicola. April 1997? |
| 1572865 |
black spot |
Alternaria brassicicola |
Chinese cabbage plants showing extensive leaf spotting caused by Alternaria brassicicola. April 1997? |
| 1572864 |
black spot |
Alternaria brassicicola |
Chinese cabbage leaf showing many lesions caused by Alternaria brassicicola. April 1997? |
| 1572863 |
black spot |
Alternaria brassicicola |
Chinese cabbage leaf showing many lesions caused by Alternaria brassicicola. April 1997? |
| 1572861 |
black spot |
Alternaria brassicicola |
Chinese cabbage leaf showing many lesions caused by Alternaria brassicicola. April 1997? |
| 1572862 |
black spot |
Alternaria brassicicola |
Chinese cabbage leaf showing many lesions caused by Alternaria brassicicola. April 1997? |
| 1572860 |
black spot |
Alternaria brassicicola |
Chinese cabbage leaf showing many lesions caused by Alternaria brassicicola. April 1997 |
| 1572859 |
black spot |
Alternaria brassicicola |
Leaf spot on cabbage caused by Alternaria brassicicola or A. brassicae. April 1997 |
| 1524017 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 5481759 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5481751 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5481752 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5481753 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5481754 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5481755 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5481756 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5481757 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5481758 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5454396 |
Bipolaris fungus |
Bipolaris spicifera |
Three day old culture of a Bipolaris sp. growing on potato dextrose agar (PDA) |
| 5454400 |
Bipolaris fungus |
Bipolaris spicifera |
The reverse of a three day old culture of a Bipolaris sp. growing on potato dextrose agar (PDA) |
| 5454397 |
Bipolaris fungus |
Bipolaris spicifera |
Three day old culture of a Biploaris sp. growing on quarter-strength (1/4) potato dextrose agar (PDA) |
| 5454398 |
Bipolaris fungus |
Bipolaris spicifera |
Three day old culture of a Bipolaris sp. growing on quarter-strength (1/4) potato dextrose agar (PDA) |
| 5454399 |
Bipolaris fungus |
Bipolaris spicifera |
The reverse of a three day old culture of a Bipolaris sp. growing on quarter-strength (1/4) potato dextrose agar (PDA) |
| 5486959 |
Alternaria blight |
Alternaria zinniae |
|
| 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. |
| 5484653 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Symptoms |
| 5484652 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Conidia. |
| 5484651 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Conidia. |
| 5484650 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Conidia. |
| 5484649 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf spot with conidia evident. |
| 5484648 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf spot with conidia evident. |
| 5484647 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf spot with conidia evident. |
| 5484646 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf spot. |
| 5485248 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Infected leaf |
| 5485247 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Conidia. |
| 5485246 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Conidium. |
| 5485245 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Conidium. |
| 5458673 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria leaf spot. |
| 5458674 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria leaf spot. |
| 5445953 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Produces conidia in chains |
| 5476497 |
Alternaria leaf spot |
Alternaria padwickii |
Symptoms - leaf spots |
| 5476498 |
Alternaria leaf spot |
Alternaria padwickii |
Symptoms - Leaf spots. Section cut out for microscopic examination. |
| 5476496 |
Alternaria leaf spot |
Alternaria padwickii |
Conidia on tape mount |
| 5476494 |
Alternaria leaf spot |
Alternaria padwickii |
Conidiophores |
| 5476495 |
Alternaria leaf spot |
Alternaria padwickii |
Conidiophores on tape mount |
| 5476493 |
Alternaria leaf spot |
Alternaria padwickii |
Conidiophores |
| 5476492 |
Alternaria leaf spot |
Alternaria padwickii |
Conidia on leaf spot viewed with dissecting scope |
| 5476491 |
Alternaria leaf spot |
Alternaria padwickii |
Leaf spot with fungus evident |
| 5476433 |
Phoma blight |
Phoma exigua var. exigua |
Symptoms |
| 5411487 |
Phoma blight |
Phoma destructiva |
|
| 5411470 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 5454395 |
Bipolaris fungus |
Bipolaris spicifera |
Three day old culture of a Bipolaris sp. growing on potato dextrose agar (PDA) |
| 5473741 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Hyphae and conidia
in vitro: harvested from potato dextrose agar |
| 5473742 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
hyphae and conidia
in vitro: harvested from potato dextrose agar |
| 5473743 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Hyphae, conidia and sporodochia.
in vitro: harvested from potato dextrose agar |
| 5473745 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Hyphae, conidia and sporodochia
In vitro: harvested from potato dextrose agar |
| 5473762 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Gross culture morphology; one-month post plating
In vitro |
| 5473763 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Culture margin; one-month post plating
In vitro |
| 5473764 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Gross culture morphology; one-month post plating
In vitro |
| 5473744 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
conidia
In vitro |
| 5473913 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Culture margin; one-month post plating |
| 5473914 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Selected view of gross culture-margin morphology; one-month post plating
In vitro |
| 5473915 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Gross morphology of culture surface; one-month post plating
In vitro |
| 1568038 |
early blight |
Alternaria solani |
|
| 5458770 |
Phoma blight |
Phoma clematidina |
Pycnidia in sectioned leaf tissue |
| 1570891 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria as secondary invader of kale stem tissue. Primary cause not known. November 1994 |
| 1570890 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria as a secondary invader of kale stem tissue. Primary cause not known. November 1994 |
| 5458854 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
infected needle with pseudothecia emerging |
| 5458853 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
infected needle with pseudothecia emerging |
| 5458852 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Infected foliage |
| 5458851 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia emerging from needle |
| 5458850 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia emerging from needle |
| 5458848 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Infected needle with pseudothecia emerging |
| 5458849 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia emerging from needle |
| 5458847 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia emerging from needle |
| 5458846 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia emerging from needle |
| 5458844 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia emerging from needle |
| 5458845 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia emerging from needle |
| 5458775 |
Phoma blight |
Phoma clematidina |
Leaf spots on diseased leaves |
| 5458773 |
Phoma blight |
Phoma clematidina |
Conidia |
| 5458774 |
Phoma blight |
Phoma clematidina |
Cross-section of pycnidia in leaf tissue |
| 5458772 |
Phoma blight |
Phoma clematidina |
Conidia |
| 5458771 |
Phoma blight |
Phoma clematidina |
Conidia |
| 5458769 |
Phoma blight |
Phoma clematidina |
Pycnidial wall in cross-section |
| 5458768 |
Phoma blight |
Phoma clematidina |
Cross-section of pycnidium |
| 5458767 |
Phoma blight |
Phoma clematidina |
Pycnidia evident in leaf spot. |
| 5457969 |
maple cankers |
Stegonsporium spp. |
Dark fruiting bodies emerging from blighted maple twig |
| 5457972 |
maple cankers |
Stegonsporium spp. |
dark spores |
| 5457973 |
maple cankers |
Stegonsporium spp. |
fruiting body with mature spores |
| 5458375 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
Leaf spots on leaves. |
| 5458372 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
Ascospores. |
| 5458370 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
Ascocarp cross-section. |
| 5458368 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
Leaf spots on leaf. |
| 5458369 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
Leaf spots on leaf |
| 5458371 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
Leaf spot with emergent ascocarps. |
| 5458373 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
Ascospores |
| 5458374 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
Ascospores in ascus |
| 5454327 |
Leptosphaerulina leaf blight |
Leptosphaerulina crassiasca |
Ascospores of Leptosphaerulina crassiasca |
| 5454328 |
Leptosphaerulina leaf blight |
Leptosphaerulina crassiasca |
Ascospores of Leptosphaerulina crassiasca |
| 5454329 |
Leptosphaerulina leaf blight |
Leptosphaerulina crassiasca |
Ascospores of Leptosphaerulina crassiasca |
| 5454326 |
Leptosphaerulina leaf blight |
Leptosphaerulina crassiasca |
|
| 5449581 |
Alternaria black molds / stem cankers |
Alternaria spp. |
conidia |
| 5449582 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5407842 |
apple scab |
Venturia inaequalis |
Apple scab symptoms and signs evident on a leaf and young developing fruit |
| 0176071 |
mal secco |
Phoma tracheiphila |
Lemon tree (Citrus limon) infected by mal secco. |
| 1406074 |
brown spot |
Alternaria alternata |
|
| 1406075 |
brown spot |
Alternaria alternata |
needle symptoms |
| 1399112 |
shepherd's crook leaf and shoot blight |
Venturia populina |
|
| 4213006 |
willow scab |
Venturia saliciperda |
tip dieback |
| 1234081 |
early blight |
Alternaria solani |
|
| 1436042 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 5426743 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf symptoms: dark brown to black areas of tissue. |
| 1235041 |
peach scab |
Venturia carpophila |
|
| 1235144 |
apple scab |
Venturia inaequalis |
|
| 2251045 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
symptomatic trees |
| 2251044 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
infected foliage on left and healthy foliage on right |
| 5437627 |
tan spot |
Pyrenophora tritici-repentis |
|
| 5437628 |
tan spot |
Pyrenophora tritici-repentis |
|
| 5437629 |
tan spot |
Pyrenophora tritici-repentis |
|
| 5437630 |
tan spot |
Pyrenophora tritici-repentis |
|
| 5437631 |
tan spot |
Pyrenophora tritici-repentis |
|
| 1436071 |
apple scab |
Venturia inaequalis |
|
| 1234124 |
early blight |
Alternaria solani |
to leaf |
| 1235139 |
apple scab |
Venturia inaequalis |
|
| 4449064 |
Phoma blights |
Phoma spp. |
|
| 1415102 |
Herpotrichia fungi |
Herpotrichia spp. |
July 23, 2002 |
| 1415114 |
Herpotrichia fungi |
Herpotrichia spp. |
July 23, 2002 |
| 1467408 |
brown felt blight |
Herpotrichia juniperi |
|
| 1436127 |
Alternaria black molds / stem cankers |
Alternaria spp. |
invades leaves damaged by downy mildew |
| 1436121 |
Alternaria leaf blight |
Alternaria cucumerina |
|
| 1442053 |
brown felt blight |
Herpotrichia juniperi |
|
| 1440024 |
brown spot |
Alternaria alternata |
Symptoms of the brown spot fungus first appear on the lower leaves. Spots are brown with sharply defined margins and may be surrounded by yellow halos. The primary distinguishing characteristics of brown spot are the dark concentric rings within spots that give it a target-like appearance. With magnification, reproductive structures of the casual agent are seen as tufts of black fungal spores (conidia). Under severe conditions, spots are numerous, may coalesce, and give the leaf a ragged appearance as the infected tissue falls out. |
| 1234103 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 1402025 |
brown spot |
Alternaria alternata |
This fungal disease appears first on the older leaves as circular, brown spots (1/4 to 1 1/4 inches in diameter) with sharply defined margins. Concentric circles (rings) are often noticeable within the spots. As the leaves approach maturity, a yellowish "halo" of varying width often forms around the lesion. Lesions may merge, forming large areas of dead tissue. During humid weather, sporulation of the fungus may be abundant, giving the lesions a black, dusty appearance. Brown spot is most severe as the plant approaches maturity, and the disease progresses from the lower to the upper leaves. Disease severity depends much on the weather, the overall health of the plant, varietal tolerance, and harvest rate. |
| 4213004 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
|
| 5076090 |
Alternaria leaf blight |
Alternaria cucumerina |
Brown to black spots with concentric rings observed within the spot. A yellow halo often occurs around a spot or group of spots. |
| 4212019 |
Venturia leaf scabs and blights |
Venturia spp. |
gall |
| 1436081 |
peach scab |
Venturia carpophila |
on fruit |
| 1436046 |
brown spot |
Alternaria alternata |
Leaf spots are brown in color, circular and enlarge to about the size of a nickel. Concentric rings can be seen within the spots and these may coalese forming irregular areas on the foliage. Disease severity is positively correlated with cloudy, wet weather. The disease occurs primarily on mature leaves often beginning on the lower leaves and progressing to other leaves higher up on the stalk. |
| 1436074 |
apple scab |
Venturia inaequalis |
on young fruit and leaf |
| 1415218 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf necrosis on seedling. Sept. 21, 2003 |
| 1234080 |
early blight |
Alternaria solani |
|
| 5435608 |
Japanese pear scab |
Venturia nashicola |
|
| 1436082 |
peach scab |
Venturia carpophila |
on twig |
| 1406195 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
|
| 1234110 |
early blight |
Alternaria solani |
to stem |
| 1233052 |
early blight |
Alternaria solani |
|
| 1234123 |
early blight |
Alternaria solani |
to stem |
| 1436019 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 1236149 |
peach scab |
Venturia carpophila |
|
| 5427709 |
Alternaria blight |
Alternaria zinniae |
Small reddish brown spots with grayish centers typical of Alternaria leaf blight on zinnia |
| 5427735 |
Pyracantha scab |
Spilocaea pyracanthae |
Symptoms and signs of scab on pyracantha fruit
|
| 1235106 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 1234176 |
apple scab |
Venturia inaequalis |
|
| 1440027 |
Phoma blight |
Phoma exigua var. exigua |
Spots are tan colored, with minute dark circular specks present on the surface of the spot. Brown spot and ragged leaf spot may be confused. The presence of distinct, circular, black fruiting bodies (pycnidia), which may be seen under magnification, distinguishes this disease from brown spot. The tissue in the spot may become papery-thin, tearing easily and giving the spot a ragged appearance. This disease is usually of minor importance, showing up late in the season on the lower leaves. |
| 5418702 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
|
| 1440025 |
brown spot |
Alternaria alternata |
Symptoms of the brown spot fungus first appear on the lower leaves. Spots are brown with sharply defined margins and may be surrounded by yellow halos. The primary distinguishing characteristics of brown spot are the dark concentric rings within spots that give it a target-like appearance. With magnification, reproductive structures of the casual agent are seen as tufts of black fungal spores (conidia). Under severe conditions, spots are numerous, may coalesce, and give the leaf a ragged appearance as the infected tissue falls out. |
| 5261034 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 1440026 |
Phoma blight |
Phoma exigua var. exigua |
Spots are tan colored, with minute dark circular specks present on the surface of the spot. Brown spot and ragged leaf spot may be confused. The presence of distinct, circular, black fruiting bodies (pycnidia), which may be seen under magnification, distinguishes this disease from brown spot. The tissue in the spot may become papery-thin, tearing easily and giving the spot a ragged appearance. This disease is usually of minor importance, showing up late in the season on the lower leaves. |
| 5418739 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Sooty mold symptoms on wheat head |
| 5418744 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Sooty mold symptoms on wheat head |
| 4544086 |
brown felt blight |
Herpotrichia juniperi |
|
| 5426742 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Black mold/stem canker of tomato |
| 5426745 |
Alternaria black molds / stem cankers |
Alternaria spp. |
bottom view of plate at two days |
| 5426746 |
Alternaria black molds / stem cankers |
Alternaria spp. |
top view of culture plate at two days |
| 5426747 |
Alternaria black molds / stem cankers |
Alternaria spp. |
The spores were obtained with a tape mount which was stained with Lactophenol Blue and viewed with a compound scope at 40x. The microscope picture was taken at 4 days (2x10x). |
| 5426748 |
Alternaria black molds / stem cankers |
Alternaria spp. |
bottom view of culture plate at 4 days |
| 5426749 |
Alternaria black molds / stem cankers |
Alternaria spp. |
top view of culture plate at 4 days |
| 5426750 |
Alternaria black molds / stem cankers |
Alternaria spp. |
bottom view at 6 days |
| 5426751 |
Alternaria black molds / stem cankers |
Alternaria spp. |
top view at 6 days |
| 1234186 |
Alternaria leaf blight |
Alternaria cucumerina |
close-up |
| 4544085 |
brown felt blight |
Herpotrichia juniperi |
|
| 5428816 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Conidia on conidiophores. |
| 5428817 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Conidia |
| 5428818 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Conidiophore with apical pore. |
| 5428819 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Conidial bloom on bulb sheath. |
| 5428820 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Conidial production under bulb sheath. |
| 5428821 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Conidia on conidiophores. |
| 5429762 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5429763 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5429764 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5429765 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 1406194 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
|
| 5411419 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
spot blotch |
| 5411435 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Fungal condia |
| 5411420 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
spot blotch |
| 5411421 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
spot blotch |
| 0176078 |
leaf spot of maize |
Bipolaris zeicola |
Lesions caused by Cochliobolus carbonum on maize leaf. |
| 1436104 |
early blight |
Alternaria solani |
on leaf |
| 1402024 |
brown spot |
Alternaria alternata |
This fungal disease appears first on the older leaves as circular, brown spots (1/4 to 1 1/4 inches in diameter) with sharply defined margins. Concentric circles (rings) are often noticeable within the spots. As the leaves approach maturity, a yellowish "halo" of varying width often forms around the lesion. Lesions may merge, forming large areas of dead tissue. During humid weather, sporulation of the fungus may be abundant, giving the lesions a black, dusty appearance. Brown spot is most severe as the plant approaches maturity, and the disease progresses from the lower to the upper leaves. Disease severity depends much on the weather, the overall health of the plant, varietal tolerance, and harvest rate. |
| 2251064 |
shepherd's crook leaf and shoot blight |
Venturia populina |
|
| 1371047 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Stand dieback in group of several trees. |
| 5384611 |
brown spot |
Alternaria alternata |
|
| 5384607 |
brown spot |
Alternaria alternata |
|
| 5384608 |
brown spot |
Alternaria alternata |
|
| 5384609 |
brown spot |
Alternaria alternata |
|
| 5384610 |
brown spot |
Alternaria alternata |
|
| 5426924 |
brown spot of rice |
Cochliobolus miyabeanus |
Round to elongated spots |
| 1371048 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Necrotic lesions on needles 2 years old and older; dieback from the tip of needle. Nemecká, Slovakia |
| 1415113 |
Herpotrichia fungi |
Herpotrichia spp. |
July 23, 2002 |
| 5411261 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
|
| 5411262 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
|
| 5411263 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
|
| 5393421 |
Japanese pear scab |
Venturia nashicola |
Black colored conidia on vein of pear leaf |
| 5411332 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Magnified view of dark fungal conidia and conidiophores on leaf blade |
| 1570299 |
brown spot |
Alternaria alternata |
Altenaria alternata (400X). December 1991 |
| 1570300 |
brown spot |
Alternaria alternata |
Chains of conidia of Alternaria alternata (100X). December 1991 |
| 5417120 |
Drechslera leaf spot |
Drechslera spp. |
foliar symptoms |
| 5417119 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5417116 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5417103 |
dead spot |
Ophiosphaerella agrostidis |
|
| 5417102 |
dead spot |
Ophiosphaerella agrostidis |
|
| 5417118 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5403533 |
black spot |
Alternaria brassicicola |
Three days after artifical inoculation |
| 5417115 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5408860 |
apple scab |
Venturia inaequalis |
|
| 5403519 |
black spot |
Alternaria brassicicola |
Concentric balck spots on leaf |
| 5408838 |
purple blotch |
Alternaria porri |
Black to purple spot on stem of Allium |
| 5403529 |
brown spot of rice |
Cochliobolus miyabeanus |
Round to elongated spots with yellow colored edges on rice leaves |
| 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. |
| 5408099 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Magnification of 200X |
| 5408100 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Magnification of 400X |
| 5408095 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5410673 |
brown spot of rice |
Cochliobolus miyabeanus |
Rice leaf showig severe brown spot leaf symptoms. |
| 5410611 |
Alternaria leaf spot |
Alternaria padwickii |
Rice leaves showing symptoms of Alternaria leaf spot. |
| 5410612 |
Alternaria leaf spot |
Alternaria padwickii |
Rice leaves showing symtpoms of Alternaria leaf spot. |
| 5410619 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
Infected rice grain showing signs and symptoms of black kernal. |
| 1538019 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 1538017 |
northern corn leaf blight |
Exserohilum turcicum |
Blight across the leaf axil areas |
| 1538018 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 1538014 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 1538016 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 1538015 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 1538012 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 1538013 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 1538010 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5402952 |
Alternaria leaf blight |
Alternaria cucumerina |
Control of Alternaria cucumerinum with maneb or zineb. |
| 5402987 |
apple scab |
Venturia inaequalis |
|
| 5402985 |
apple scab |
Venturia inaequalis |
|
| 5402986 |
apple scab |
Venturia inaequalis |
|
| 5402963 |
apple scab |
Venturia inaequalis |
|
| 5402964 |
apple scab |
Venturia inaequalis |
|
| 5402957 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5402919 |
Alternaria leaf blight |
Alternaria cucumerina |
Also Muskmelon cracking |
| 5402984 |
brown spot |
Alternaria alternata |
|
| 5402983 |
brown spot |
Alternaria alternata |
On Queen of Colorado variety |
| 5402982 |
brown spot |
Alternaria alternata |
On Queen of Colorado variety. |
| 5402979 |
brown spot |
Alternaria alternata |
|
| 5402958 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5393380 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
|
| 5394463 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Common root rot of wheat |
| 5394446 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria on lower leaves of camelina |
| 5394447 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria on lower leaves of camelina |
| 5394464 |
tan spot |
Pyrenophora tritici-repentis |
|
| 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. |
| 2178086 |
Leptosphaeria leaf blight |
Leptosphaeria spp. |
|
| 2178100 |
Leptosphaeria leaf blight |
Leptosphaeria spp. |
|
| 2179005 |
Leptosphaeria leaf blight |
Leptosphaeria spp. |
|
| 2178038 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178054 |
apple scab |
Venturia inaequalis |
|
| 2178022 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178023 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178024 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178025 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178033 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178034 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178037 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2178021 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2177099 |
Phoma blights |
Phoma spp. |
|
| 2177094 |
Lewia fungi |
Lewia spp. |
|
| 2177095 |
Lewia fungi |
Lewia spp. |
|
| 2177051 |
Phoma blights |
Phoma spp. |
|
| 2177049 |
Phoma blights |
Phoma spp. |
|
| 2177043 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177044 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177046 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177047 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177048 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177045 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177042 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177038 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177040 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177032 |
Phoma blights |
Phoma spp. |
|
| 2177033 |
Phoma blights |
Phoma spp. |
|
| 2177030 |
Phoma blights |
Phoma spp. |
|
| 2177031 |
Phoma blights |
Phoma spp. |
|
| 2177026 |
Phoma blights |
Phoma spp. |
|
| 2177027 |
Phoma blights |
Phoma spp. |
|
| 2177028 |
Phoma blights |
Phoma spp. |
|
| 2177015 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177017 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2177018 |
Drechslera leaf spot |
Drechslera spp. |
|
| 2174031 |
Helminthosporium leaf blotch |
Drechslera avenacea |
|
| 2174023 |
apple scab |
Venturia inaequalis |
conidia on the subcuticular mycelium |
| 2174024 |
apple scab |
Venturia inaequalis |
conidia |
| 2174017 |
apple scab |
Venturia inaequalis |
|
| 2174018 |
apple scab |
Venturia inaequalis |
|
| 2174019 |
apple scab |
Venturia inaequalis |
|
| 2174020 |
apple scab |
Venturia inaequalis |
|
| 2174021 |
apple scab |
Venturia inaequalis |
lesion caused by subcuticular mycelium; conidia released |
| 2174022 |
apple scab |
Venturia inaequalis |
lesion formed by subcuticular mycelium; conidia released |
| 2173055 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2173060 |
Alternaria black molds / stem cankers |
Alternaria spp. |
with secondary infection of Scopulariopsis sp. |
| 2173050 |
Alternaria black molds / stem cankers |
Alternaria spp. |
with secondary infection of Scopulariopsis sp. |
| 2173051 |
Alternaria black molds / stem cankers |
Alternaria spp. |
with secondary infection of Scopulariopsis sp. |
| 2173053 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 2173025 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173024 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173019 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173021 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173022 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173023 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173018 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173003 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2172100 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173001 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2173002 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2172099 |
Leptosphaeria leaf blight |
Leptosphaeria dracaenae |
|
| 2172060 |
Leptosphaeria leaf blight |
Leptosphaeria spp. |
|
| 2172061 |
Leptosphaeria leaf blight |
Leptosphaeria spp. |
|
| 2172063 |
Leptosphaeria leaf blight |
Leptosphaeria spp. |
pseudothecia |
| 2170092 |
Japanese pear scab |
Venturia nashicola |
Fusicladium sp. state of Venturia nashicola |
| 2170060 |
Phoma blights |
Phoma spp. |
|
| 2170056 |
Phoma blights |
Phoma spp. |
|
| 2170057 |
Phoma blights |
Phoma spp. |
|
| 2170058 |
Phoma blights |
Phoma spp. |
|
| 5393411 |
early blight |
Alternaria solani |
Black conidia mass on tomato |
| 5390067 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
Asci, spores |
| 5390535 |
brown spot of rice |
Cochliobolus miyabeanus |
Rice seedlings with symptoms of seedling blight |
| 5392898 |
peach scab |
Venturia carpophila |
|
| 5392897 |
peach scab |
Venturia carpophila |
|
| 5390477 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
Fungal spores of the black kernel pathogen |
| 5390478 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
Black kernel grain infection |
| 5390522 |
brown spot of rice |
Cochliobolus miyabeanus |
grain infection symptoms |
| 5390523 |
brown spot of rice |
Cochliobolus miyabeanus |
Peck infected milled rice grain showing symptoms |
| 5390534 |
brown spot of rice |
Cochliobolus miyabeanus |
Rice seedlings with symptoms of seedling blight |
| 5390485 |
brown spot of rice |
Cochliobolus miyabeanus |
Rice leaf with brown spot infection |
| 5390489 |
brown spot of rice |
Cochliobolus miyabeanus |
Close-up view of rice leaf with brown spot infection
|
| 5390490 |
brown spot of rice |
Cochliobolus miyabeanus |
Rice leaf showing severe brown spot leaf symptoms |
| 5390491 |
brown spot of rice |
Cochliobolus miyabeanus |
Rice leaf with brown spot infection symptoms |
| 5390551 |
Alternaria leaf spot |
Alternaria padwickii |
Rice leaves with stack burn (Alternaria leaf spot) symptoms |
| 5390552 |
Alternaria leaf spot |
Alternaria padwickii |
Rice leaves with stack burn (Alternaria leaf spot) symptoms |
| 5332060 |
brown spot |
Alternaria alternata |
|
| 5389804 |
black spot |
Alternaria brassicicola |
Leaf spots |
| 5389805 |
black spot |
Alternaria brassicicola |
Leaf spots |
| 5389806 |
black spot |
Alternaria brassicicola |
|
| 5390068 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
mature ascus, spores |
| 5390069 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
pseudothecia, spores |
| 5369144 |
early blight |
Alternaria solani |
Close-up of a single spore of Alternaria solani far left, a leaf hair in center, and back end of insect on right. |
| 5379671 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
|
| 5379672 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
|
| 5385853 |
leaf blotch |
Stagonospora nodorum |
Oval-shaped, brown spots with a yellow border on infected leaves |
| 5385854 |
leaf blotch |
Stagonospora nodorum |
Oval-shaped, brown spots with a yellow border on infected leaves |
| 5385855 |
leaf blotch |
Stagonospora nodorum |
Close-up of oval-shaped, brown spots with a yellow border on infected leaves |
| 5385856 |
leaf blotch |
Stagonospora nodorum |
Close-up of oval-shaped, brown spots with a yellow border on infected leaves |
| 5385857 |
leaf blotch |
Stagonospora nodorum |
Close-up of an oval-shaped, brown spot with a yellow border with reddish-colored spore-producing bodies ("pycnidia") barely visible against the color of the surrounding infected tissue. |
| 5385858 |
leaf blotch |
Stagonospora nodorum |
Close-up of an oval-shaped, brown spot with a yellow border and reddish-colored spore-producing bodies ("pycnidia") barely visible against the color of the surrounding infected tissue. |
| 5385859 |
leaf blotch |
Stagonospora nodorum |
Close-up of an oval-shaped, brown spot with a yellow border and reddish-colored spore-producing bodies ("pycnidia") barely visible against the color of the surrounding infected tissue. |
| 5385860 |
leaf blotch |
Stagonospora nodorum |
Close-up of an oval-shaped, brown spot with a yellow border and reddish-colored spore-producing bodies ("pycnidia") barely visible against the color of the surrounding infected tissue. |
| 5385861 |
leaf blotch |
Stagonospora nodorum |
Dark-field observation of infected leaf tissue with many spore-producing bodies ("pycnidia") and a measurement scale |
| 5385862 |
leaf blotch |
Stagonospora nodorum |
Dark-field observation of infected leaf tissue with several spore-producing bodies ("pycnidia") and a measurement scale |
| 5385863 |
leaf blotch |
Stagonospora nodorum |
Dark-field observation of infected leaf tissue with several spore-producing bodies ("pycnidia") and spores with a measurement scale |
| 5385864 |
leaf blotch |
Stagonospora nodorum |
Dark-field observation of asexual spores of the fungus Stagonospora nodorum with a measurement scale |
| 5385865 |
leaf blotch |
Stagonospora nodorum |
Asexual spores of the fungus Stagonospora nodorum with a measurement scale |
| 5385866 |
leaf blotch |
Stagonospora nodorum |
Asexual spores of the fungus Stagonospora nodorum with a measurement scale and measurement of some individual spores |
| 1525424 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 1525425 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 1525426 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 1525427 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 1525590 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria on sunflower |
| 1525678 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 1525679 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 1525680 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 1525681 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5332045 |
Drechslera leaf spot |
Drechslera spp. |
Drechslera leaf spot |
| 5333044 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5336039 |
Drechslera leaf spot |
Drechslera spp. |
|
| 5336095 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5337074 |
peach scab |
Venturia carpophila |
|
| 1525309 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Altenaria leafspot on Gomphreno |
| 1525310 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Altenaria leafspot on Gomphrena |
| 1525311 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Altenaria leafspot on Gomphrena |
| 1525313 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Altenaria leafspot on Gomphrena |
| 1525314 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Altenaria leafspot on Gomphrena |
| 1525315 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5383187 |
brown spot |
Alternaria alternata |
Lesions on pumpkin |
| 5383188 |
brown spot |
Alternaria alternata |
Lesions on pumpkin |
| 5383189 |
brown spot |
Alternaria alternata |
Dark mass of conidia |
| 5383190 |
brown spot |
Alternaria alternata |
Lesions on pumpkin |
| 5368951 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
|
| 5368950 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
The sexual spore stage is seen as many brown ascus sacs containing “ascospores”. |
| 5368278 |
Alternaria leaf blight |
Alternaria cucumerina |
Close-up of infected spot where dark dashes are the asexual spores. |
| 5368279 |
Alternaria leaf blight |
Alternaria cucumerina |
Close-up of infected spot where dark dashes are the asexual spores. |
| 5368280 |
Alternaria leaf blight |
Alternaria cucumerina |
Close-up of infected spot where dark dashes are the asexual spores. |
| 5368808 |
Alternaria leaf blight |
Alternaria cucumerina |
Significantly infected leaves turn brown and brittle. |
| 5368809 |
Alternaria leaf blight |
Alternaria cucumerina |
Close-up of one leaf with many spots having a lighter center portion and darker outer border. |
| 5368810 |
Alternaria leaf blight |
Alternaria cucumerina |
Close-up of infected spot where dark dashes are the asexual spores. |
| 5368811 |
Alternaria leaf blight |
Alternaria cucumerina |
Close-up of one leaf with many spots having a lighter center portion and darker outer border and some with concentric rings. |
| 5368945 |
Alternaria leaf blight |
Alternaria cucumerina |
Leaf having multiple spots with concentric rings. |
| 5368946 |
Alternaria leaf blight |
Alternaria cucumerina |
Leaf having multiple spots with concentric rings. |
| 5368947 |
Alternaria leaf blight |
Alternaria cucumerina |
Close-up of multiple spots with concentric rings. |
| 5368948 |
Alternaria leaf blight |
Alternaria cucumerina |
Close-up of multiple spots with concentric rings. |
| 5368949 |
Leptosphaerulina leaf blight |
Leptosphaerulina trifolii |
The sexual spore stage is seen as “ascospores” within an “ascus”. |
| 5369141 |
early blight |
Alternaria solani |
Close-up of a single leaf spot showing darkened rings looking like a target. |
| 5369142 |
early blight |
Alternaria solani |
Leaf spotting due to Early blight. |
| 5369143 |
early blight |
Alternaria solani |
Close-up of the spores of Alternaria solani coming from an infected leaf spot. |
| 5369145 |
early blight |
Alternaria solani |
Conidiophores and conidia of Alternaria solani. |
| 5369146 |
early blight |
Alternaria solani |
A single spore of Alternaria solani. |
| 5369147 |
early blight |
Alternaria solani |
A stem canker due to Early blight. |
| 5369148 |
early blight |
Alternaria solani |
Close-up of leaf spotting. |
| 5331081 |
black spot |
Alternaria brassicicola |
|
| 5333010 |
spring dead spot |
Ophiosphaerella korrae |
Pennsylvania State University field trials |
| 5332095 |
Pyrenophora leaf blight |
Drechslera dictyoides |
|
| 5333008 |
spring dead spot |
Ophiosphaerella korrae |
Pennsylvania State University field trials |
| 5333007 |
spring dead spot |
Ophiosphaerella korrae |
Pennsylvania State University field trials |
| 5333009 |
spring dead spot |
Ophiosphaerella korrae |
Pennsylvania State University field trials |
| 5333066 |
Phoma blights |
Phoma spp. |
|
| 5334019 |
apple scab |
Venturia inaequalis |
Crabapple |
| 5334020 |
apple scab |
Venturia inaequalis |
Crabapple |
| 5332086 |
leaf blotch |
Stagonospora nodorum |
|
| 5332087 |
leaf blotch |
Stagonospora nodorum |
|
| 5332088 |
leaf blotch |
Stagonospora nodorum |
|
| 5333054 |
early blight |
Alternaria solani |
|
| 2169098 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
|
| 2170052 |
Phoma blights |
Phoma spp. |
|
| 2170053 |
Phoma blights |
Phoma spp. |
|
| 5223087 |
early blight |
Alternaria solani |
|
| 5372325 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372326 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372327 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5362727 |
purple blotch |
Alternaria porri |
onion purple blotch, disease, Alternaria porri |
| 5373068 |
Phoma blights |
Phoma spp. |
|
| 5373067 |
Phoma blights |
Phoma spp. |
|
| 1263074 |
black spot of Japanese pear |
Alternaria kikuchiana |
Black spot |
| 1263075 |
Alternaria blotch of apple |
Alternaria mali |
Necrotic lesion |
| 0725099 |
gangrene |
Phoma exigua var. foveata |
External symptoms of Phoma exigua var. foveata on potato tubers showing irregularly shaped, sunken lesions. |
| 0725098 |
gangrene |
Phoma exigua var. foveata |
Internal symptoms of Phoma exigua var. foveata on potato tubers showing more or less extensive cavities with definitive margins. Black and white photo |
| 0725075 |
Japanese pear scab |
Venturia nashicola |
|
| 0725048 |
Japanese pear scab |
Venturia nashicola |
Symptoms of Venturia nashicola on Japanese pear, Pyrus pyrifolia cv. Hosui. |
| 0660093 |
mal secco |
Phoma tracheiphila |
Lemon tree severely affected by mal secco (Deuterophoma tracheiphila) |
| 5358918 |
pear scab |
Venturia pirina |
A pear fruit showing symptoms of the pear scab disease caused by Venturia pirina. |
| 0656044 |
mal secco |
Phoma tracheiphila |
Wood discoloration in a lemon tree (Citrus limon) infected by mal secco (Deuterophoma tracheiphila). |
| 5372680 |
Rostratum leaf spot |
Exserohilum rostratum |
|
| 5372675 |
Rostratum leaf spot |
Exserohilum rostratum |
|
| 5372674 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 5372673 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 5372667 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 5372668 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 5372666 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 5372283 |
Curvularia fungus |
Curvularia trifolii |
|
| 5372282 |
Curvularia fungus |
Curvularia trifolii |
|
| 5372281 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
|
| 5372280 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
|
| 5372279 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
|
| 5372278 |
Cochliobolus leaf spot / black kernel |
Cochliobolus lunatus |
|
| 5372147 |
peach scab |
Venturia carpophila |
|
| 5372146 |
peach scab |
Venturia carpophila |
|
| 5372041 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372042 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372040 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372038 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372039 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372037 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372036 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372035 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372034 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5372033 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5361540 |
Phoma blight |
Phoma macdonaldii |
A sunflower plant with Phoma black stem infection caused by Phoma macdonaldii. |
| 5361539 |
Phoma blight |
Phoma macdonaldii |
A sunflower field with Phoma black stem infection caused by Phoma macdonaldii. |
| 5361538 |
Phoma blight |
Phoma macdonaldii |
A sunflower field with Phoma black stem infection caused by Phoma macdonaldii. |
| 5362697 |
Alternaria black molds / stem cankers |
Alternaria spp. |
A sunflower leaf with Alternaria leaf spot infection caused by Alternaria spp. in the field. |
| 5360401 |
Alternaria black molds / stem cankers |
Alternaria spp. |
A cabbage leaf with symptoms of Alternaria leaf spot infection caused by the fungus Alternaria spp. in the field. |
| 5360400 |
Alternaria black molds / stem cankers |
Alternaria spp. |
A cabbage leaf with symptoms of Alternaria leaf spot infection caused by the fungus Alternaria spp. in the field. |
| 5358420 |
brown spot |
Alternaria alternata |
Melon plants with Alternaria leaf spot symptoms caused by Alternaria alternata f.sp. cucurbitae in the field.. |
| 5358421 |
brown spot |
Alternaria alternata |
Melon leaves with Alternaria leaf spot symptoms caused by Alternaria alternata f.sp. cucurbitae in the field.. |
| 5358422 |
brown spot |
Alternaria alternata |
A close-up shot of a melon leaf with Alternaria leaf spot symptoms caused by Alternaria alternata f.sp. cucurbitae. |
| 5359703 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Lawn severely affected by infection with Helminthosporium spp., Bipolaris sp., and Exserohilum sp. fungi. |
| 1525097 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525099 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525098 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525100 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525101 |
Alternaria blight |
Alternaria dianthicola |
Alternaria dianthicola on Carnation |
| 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. |
| 5356986 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Close-up view of rice leaves showing signs and symptoms of infection with Brown Spot (Helminthosporium oryzae). |
| 5356985 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Rice leaves showing signs and symptoms of infection with Brown Spot (Helminthosporium oryzae). |
| 5356984 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Rice plants showing signs and symptoms of infection with Brown Spot (Helminthosporium oryzae). |
| 1494051 |
brown spot |
Alternaria alternata |
|
| 5362221 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Apricot fruits showing symptoms of infection with Alternaria spot (Alternaria sp.). |
| 5362500 |
early blight |
Alternaria solani |
Potato plants with early blight (Alternaria solani) infection in the field. |
| 5362499 |
early blight |
Alternaria solani |
Potato leaves showing early blight (Alternaria solani) infection in the field. |
| 5362498 |
early blight |
Alternaria solani |
Potato leaves showing early blight (Alternaria solani) infection in the field. |
| 5362497 |
early blight |
Alternaria solani |
Potato leaves showing early blight (Alternaria solani) infection in the field. |
| 5362496 |
early blight |
Alternaria solani |
A field of potatoes showing early blight (Alternaria solani) infection. |
| 5362495 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on a potato stem in the field. |
| 5362494 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on a potato stem in the field. |
| 5362493 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on a potato leaf in the field. |
| 5362489 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on a potato leaf in the field. |
| 5362491 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on a potato leaf in the field. |
| 5362492 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on a potato leaf in the field. |
| 5362490 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on a potato leaf in the field. |
| 5362488 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on potato leaves in the field. |
| 5362487 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on potato leaves in the field. |
| 5362486 |
early blight |
Alternaria solani |
Early blight (Alternaria solani) symptoms on a potato leaf in the field. |
| 5362476 |
early blight |
Alternaria solani |
A plot showing fungicide Control and No Control treatments of early blight (Alternaria solani) on a potato field. |
| 5362475 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1997. |
| 5362473 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1997. |
| 5362474 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1997. |
| 5362471 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1997. |
| 5362472 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1997. |
| 5362469 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1997. |
| 5362470 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1997. |
| 5362467 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1997. |
| 5362466 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1997. |
| 5362468 |
early blight |
Alternaria solani |
An Early Blight (Alternaria solani) study on a potato field at Lucerne in 1998. |
| 5362464 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362462 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362463 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362460 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362461 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362458 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362459 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362455 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362456 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362457 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362454 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362451 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362452 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362449 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362450 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362453 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Screening Study on a potato field in 1997. |
| 5362448 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362447 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362446 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362445 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) and Late Blight (Phytophthora infestans) Timing Study on a potato field in 1997. |
| 5362444 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362443 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362442 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362440 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362441 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362438 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362439 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362436 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362437 |
early blight |
Alternaria solani |
An ARDEC Early Blight (Alternaria solani) Timing Study on a potato field in 1997. |
| 5362529 |
early blight |
Alternaria solani |
A potato field with early blight symptoms caused by Alternaria solani. Also shown is a spectrum weather station equipment used for disease modeling and forcasting in a potato field. |
| 5365618 |
brown spot |
Alternaria alternata |
Potato leaves showing Alternaria blight infection caused by Alternaria alternata. |
| 5361639 |
early blight |
Alternaria solani |
A potato leaflet showing early blight symptoms caused by the fungus Alternaria solani in the field. |
| 5361637 |
early blight |
Alternaria solani |
Potato plants showing early blight symptoms caused by the fungus Alternaria solani in the field. |
| 5361638 |
early blight |
Alternaria solani |
Potato plants showing early blight symptoms caused by the fungus Alternaria solani in the field. |
| 5356779 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Castorbean (Ricinus communis) fruits showing symptoms of Alternaria leaf spot (Alternaria sp.). |
| 5356778 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Castorbean plant (Ricinus communis) leaf showing symptoms of Alternaria leaf spot (Alternaria sp.). |
| 5356777 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Castorbean plant (Ricinus communis) showing symptoms of Alternaria leaf spot (Alternaria sp.). |
| 5362780 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria leaf spot (Alternaria sp.) on cantaloupe leaves. |
| 5366835 |
brown felt blight |
Herpotrichia juniperi |
Conifer limbs showing signs of brown felt blight (Herpotrichia juniperi). |
| 5366816 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Young aspen tree showing symptoms of shoot blight (Venturia tremulae). |
| 5362910 |
early blight |
Alternaria solani |
Potato early blight (Alternaria solani) trial on f field at Wray. |
| 5362909 |
early blight |
Alternaria solani |
Potato early blight (Alternaria solani) trial on f field at Wray. |
| 5362908 |
early blight |
Alternaria solani |
A potato plant showing early blight infection caused by Alternaria solani. |
| 5362907 |
early blight |
Alternaria solani |
A potato plant showing early blight infection caused by Alternaria solani. |
| 5362906 |
early blight |
Alternaria solani |
A potato field showing early blight infection caused by Alternaria solani. |
| 5359095 |
early blight |
Alternaria solani |
Potato plants showing early blight symptoms caused by Alternaria solani in the field. |
| 5359094 |
early blight |
Alternaria solani |
A potato field showing early blight symptoms caused by Alternaria solani in the field. |
| 5359093 |
early blight |
Alternaria solani |
A potato leaf showing early blight symptoms caused by Alternaria solani in the field. |
| 5359092 |
early blight |
Alternaria solani |
A potato leaf showing early blight symptoms caused by Alternaria solani in the field. |
| 5366834 |
brown felt blight |
Herpotrichia juniperi |
Young spruce tree showing symptoms of brown felt blight, Herpotrichia juniperi. |
| 5366833 |
brown felt blight |
Herpotrichia juniperi |
Spruce tree showing symptoms of brown felt blight, Herpotrichia juniperi. |
| 5366822 |
apple scab |
Venturia inaequalis |
Microscope view of the conidia of apple scab (Venturia inaequalis). |
| 5366821 |
apple scab |
Venturia inaequalis |
Close-up view of apple scab (Venturia inaequalis) on a crabapple leaf. |
| 5366820 |
apple scab |
Venturia inaequalis |
Close-up view of apple scab (Venturia inaequalis) on a crabapple leaf. |
| 5366819 |
apple scab |
Venturia inaequalis |
Apple scab (Venturia inaequalis) on crabapple. |
| 5366818 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Shepherd's crook leaf and shoot blight (Venturia tremulae) on aspen. |
| 5366817 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Shepherd's crook leaf and shoot blight (Venturia tremulae) on aspen. |
| 5366815 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Shepherd's crook leaf and shoot blight (Venturia tremulae) on aspen. |
| 5366814 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Shepherd's crook leaf and shoot blight (Venturia tremulae) on aspen. |
| 5366813 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Aspen tree severely affected by shepherd's crook leaf and shoot blight (Venturia tremulae). |
| 5366812 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Shepherd's crook leaf and shoot blight (Venturia tremulae) on aspen. |
| 5366811 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Shepherd's crook leaf and shoot blight (Venturia tremulae) on aspen. |
| 5366810 |
shepherd's crook leaf and shoot blight |
Venturia tremulae |
Shepherd's crook leaf and shoot blight (Venturia tremulae) on aspen. |
| 5362505 |
early blight |
Alternaria solani |
Signs and symptoms of early blight (Alternaria solani), a disease of potatoes, on the leaf of a weedy nightshade (Solanum sp.). |
| 5362503 |
early blight |
Alternaria solani |
Symptoms of early blight (Alternaria solani) on a volunteer potato plant growing in field corn. |
| 5362502 |
early blight |
Alternaria solani |
Symptoms of early blight (Alternaria solani) on a volunteer potato plant growing in field corn. |
| 1524158 |
brown spot |
Alternaria alternata |
Alternaria; Brown spot on lower leaf |
| 5358907 |
Phoma blight |
Phoma exigua var. exigua |
Ascochyta blight on a bean petiole and branch casued by Phoma exigua var. exigua in a field in Colombia. |
| 5358906 |
Phoma blight |
Phoma exigua var. exigua |
Ascochyta blight of bean leaves casued by Phoma exigua var. exigua in a field in Colombia. |
| 5358873 |
brown spot |
Alternaria alternata |
Drybean plant showing symptoms of Alternaria leaf and pod spot caused by Aternaria alternata on a bean field in Colombia. |
| 5357627 |
Phoma blights |
Phoma spp. |
Close-up view of a bean stem displaying symptoms of Phoma leaf spot (Phoma sp.). |
| 5357626 |
Phoma blights |
Phoma spp. |
Symptoms of Phoma leaf spot (Phoma sp.) on the foliage of a bean plant. |
| 5362263 |
purple blotch |
Alternaria porri |
Purple blotch (Alternaria porri), a disease of onions. |
| 5364058 |
purple blotch |
Alternaria porri |
Purple blotch lesion on the neck region of an onion plant caused by Alternaria porri. |
| 5364056 |
purple blotch |
Alternaria porri |
An onion fungicide test plot at Vineland used in the study of onion purple blotch caused by Alternaria porri. |
| 5362728 |
purple blotch |
Alternaria porri |
onion purple blotch, disease, Alternaria porri |
| 5362726 |
purple blotch |
Alternaria porri |
onion purple blotch, disease, Alternaria porri |
| 5362725 |
purple blotch |
Alternaria porri |
onion purple blotch, disease, Alternaria porri |
| 5362724 |
purple blotch |
Alternaria porri |
onion purple blotch, disease, Alternaria porri |
| 5362723 |
purple blotch |
Alternaria porri |
onion purple blotch, disease, Alternaria porri |
| 5362722 |
purple blotch |
Alternaria porri |
onion purple blotch, disease, Alternaria porri |
| 5362721 |
purple blotch |
Alternaria porri |
onion, purple blotch, disease, Alternaria porri |
| 5362720 |
purple blotch |
Alternaria porri |
disease, onion, purple blotch, Alternaria porri |
| 5362946 |
purple blotch |
Alternaria porri |
A field trial of onions for the purple blocth disease caused by Alternaria porri. |
| 5362945 |
purple blotch |
Alternaria porri |
A field trial of onions for the purple blocth disease caused by Alternaria porri. |
| 5362944 |
purple blotch |
Alternaria porri |
An onion field during the mid stages of the purple blocth disease caused by Alternaria porri trial in the field. |
| 5362943 |
purple blotch |
Alternaria porri |
An onion field during the mid stages of the purple blocth disease caused by Alternaria porri trial in the field. |
| 5362942 |
purple blotch |
Alternaria porri |
An onion field during the early stages of the purple blocth disease caused by Alternaria porri trial in the field. |
| 5362941 |
purple blotch |
Alternaria porri |
An onion plant with the purple blocth disease caused by Alternaria porri in the field. |
| 5362939 |
purple blotch |
Alternaria porri |
An onion plant with the purple blocth disease caused by Alternaria porri in the field. |
| 5362940 |
purple blotch |
Alternaria porri |
An onion plant with the purple blocth disease caused by Alternaria porri in the field. |
| 5362926 |
purple blotch |
Alternaria porri |
A volunteer onion plant with the purple blocth disease caused by Alternaria porri in a winter wheat field as identified by Dave Herrera. |
| 5362925 |
purple blotch |
Alternaria porri |
A volunteer onion plant with the purple blocth disease caused by Alternaria porri in a winter wheat field |
| 5361488 |
purple blotch |
Alternaria porri |
An in-filed focus on the symptoms of purple blotch Alternaria porri on a field of onion plants. |
| 5361487 |
purple blotch |
Alternaria porri |
Advanced symptoms of onion purple blotch Alternaria porri on a field of onion plants. |
| 5361486 |
purple blotch |
Alternaria porri |
Early leaf symptoms of onion purple blotch Alternaria porri on onion. |
| 1496067 |
apple scab |
Venturia inaequalis |
Apple scab |
| 1525095 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525096 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525092 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525093 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525094 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525089 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525090 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1525091 |
Alternaria blight |
Alternaria dianthicola |
Alternaria on Carnation |
| 1524021 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 1496056 |
apple scab |
Venturia inaequalis |
apple scab |
| 1493068 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Barley |
| 1493072 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Barley stripe |
| 1493073 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Barley stripe |
| 1493074 |
Helminthosporium leaf spot |
Helminthosporium spp. |
Barley stripe |
| 1493090 |
Phoma blight |
Phoma medicaginis |
|
| 1492152 |
maple cankers |
Stegonsporium spp. |
Fusicoccum |
| 1493124 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493127 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493036 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493037 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493038 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493041 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493042 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493050 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493051 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493052 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493053 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1493054 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 1494048 |
leaf blotch |
Stagonospora nodorum |
|
| 1496057 |
apple scab |
Venturia inaequalis |
Apple scab |
| 1496058 |
apple scab |
Venturia inaequalis |
Apple scab |
| 1496075 |
apple scab |
Venturia inaequalis |
Apple scab |
| 1496079 |
apple scab |
Venturia inaequalis |
scab |
| 1496080 |
apple scab |
Venturia inaequalis |
scab on apple |
| 1496081 |
apple scab |
Venturia inaequalis |
scab on apple |
| 1496082 |
apple scab |
Venturia inaequalis |
scab |
| 1496083 |
apple scab |
Venturia inaequalis |
scab |
| 1496085 |
apple scab |
Venturia inaequalis |
scab on apple |
| 1496022 |
apple scab |
Venturia inaequalis |
scab on apple |
| 1496042 |
apple scab |
Venturia inaequalis |
apple scab |
| 1496043 |
apple scab |
Venturia inaequalis |
apple scab |
| 1496044 |
apple scab |
Venturia inaequalis |
scab |
| 1496045 |
apple scab |
Venturia inaequalis |
scab on young leaf of apple |
| 1496047 |
apple scab |
Venturia inaequalis |
apple scab |
| 1496048 |
apple scab |
Venturia inaequalis |
scab on apple |
| 1492165 |
peach scab |
Venturia carpophila |
symptomatic fruit on left |
| 1492175 |
peach scab |
Venturia carpophila |
Peach scab |
| 1492176 |
brown spot |
Alternaria alternata |
Alternaria ghostyeat on peach |
| 1494050 |
brown spot |
Alternaria alternata |
|
| 1497002 |
brown spot |
Alternaria alternata |
Brown spot on tobacco |
| 1497003 |
brown spot |
Alternaria alternata |
Brown spot on tabacco |
| 5027019 |
apple scab |
Venturia inaequalis |
asci from squashed pseudothecia |
| 1524015 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
Himaydis lesion on shuck and leaves |
| 1524016 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 1524018 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 1524020 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 1524022 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 1524012 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261046 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
|
| 5267077 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5220068 |
early blight |
Alternaria solani |
|
| 5220069 |
early blight |
Alternaria solani |
|
| 5223086 |
early blight |
Alternaria solani |
|
| 5223088 |
early blight |
Alternaria solani |
|
| 5223089 |
early blight |
Alternaria solani |
|
| 5223090 |
early blight |
Alternaria solani |
|
| 5223091 |
early blight |
Alternaria solani |
|
| 5223084 |
Alternaria blight |
Alternaria panax |
|
| 5223085 |
Alternaria blight |
Alternaria panax |
|
| 5261035 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261036 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261037 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261038 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261039 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261040 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261041 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261042 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261043 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261044 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261045 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261047 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261048 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5260096 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5260097 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5260098 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5260099 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5260100 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261001 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261002 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261003 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261004 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261005 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261006 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261007 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261008 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261009 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261010 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261011 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261012 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261013 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261014 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261015 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261016 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261017 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261018 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261019 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261020 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261021 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261022 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261023 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261024 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261025 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261026 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261027 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261028 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261029 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261030 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261031 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261032 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5261033 |
northern corn leaf blight |
Exserohilum turcicum |
|
| 5223092 |
Alternaria blight |
Alternaria tenuissima |
|
| 5223093 |
Alternaria blight |
Alternaria tenuissima |
|
| 5223094 |
Alternaria blight |
Alternaria tenuissima |
|
| 5220072 |
Alternaria blight |
Alternaria tenuissima |
foliar symptoms |
| 5220073 |
Alternaria blight |
Alternaria tenuissima |
Foliar sympotoms |
| 5220074 |
Alternaria blight |
Alternaria tenuissima |
foliar symptoms |
| 5220070 |
early blight |
Alternaria solani |
|
| 5220071 |
early blight |
Alternaria solani |
collar rot |
| 5267078 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267079 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267080 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267081 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267082 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267083 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267084 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267085 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267086 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267087 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267088 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267089 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 5267090 |
Alternaria blight |
Alternaria panax |
conidiophore |
| 1234072 |
Helminthosporium leaf spot |
Helminthosporium spp. |
|
| 5026049 |
apple scab |
Venturia inaequalis |
|
| 5059031 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
|
| 5059032 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
|
| 5077047 |
early blight |
Alternaria solani |
Spots can be brown or black with concentric rings observed within the spot. A yellow halo often occurs around a spot or group of spots. |
| 5076079 |
Southern corn leaf blight and stalk rot |
Bipolaris maydis |
Long, irregular shaped, tan to white lesions. Lesions will appear along the leaf vein.la |
| 5076068 |
purple blotch |
Alternaria porri |
Begins as a small water-soaked lesion with a white center. Lesions usually turn purple to brown in color and may show concentric rings within lesions. |
| 5076080 |
northern corn leaf blight |
Exserohilum turcicum |
Small, tan to brown, somewhat round spots. May completely cover the leaf.1162825 |
| 5077068 |
Alternaria blight |
Alternaria dauci |
Infection begins as small, round spots with concentric rings within the lesion. Lesions can also be on petioles. Lesions enlarge and grow together causing a burned appearance. |
| 5077031 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Black or brown spot. Concentric rings observed within the spot. A yellow halo often occurs around a spot or group of spots. |
| 5077030 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Black or brown spot. Concentric rings observed within spot. A yellow halo is often present around a spot or group of spots. Spot will sometimes drop out |
| 5047078 |
apple scab |
Venturia inaequalis |
|
| 5047079 |
apple scab |
Venturia inaequalis |
|
| 5047080 |
apple scab |
Venturia inaequalis |
|
| 5047081 |
apple scab |
Venturia inaequalis |
|
| 5061011 |
apple scab |
Venturia inaequalis |
|
| 5061012 |
apple scab |
Venturia inaequalis |
|
| 5026050 |
apple scab |
Venturia inaequalis |
Asci with mature ascospores |
| 5032073 |
apple scab |
Venturia inaequalis |
|
| 2169099 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
spores |
| 2113093 |
brown felt blight |
Herpotrichia juniperi |
symptoms of infestation; August 2000 |
| 2113086 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
symptoms of infestation |
| 2113087 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
symptoms of infestation |
| 2113088 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
fruiting bodies on needles |
| 2111017 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
fruiting bodies on needles |
| 1415101 |
Herpotrichia fungi |
Herpotrichia spp. |
July 23, 2002 |
| 1415219 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Leaf necrosis on seedling. Sept. 21, 2003 |
| 0454018 |
leaf spot of maize |
Bipolaris zeicola |
Cochliobolus carbonum conidia |
| 1241585 |
brown felt blight |
Herpotrichia juniperi |
Brown felt blight produces a thick mat of gray to dark brown mycelium on foliage that was buried under snow. |
| 1241568 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Pseudothecia on underside of needles ranging from lightly infected (left) to heavily infected (right). |
| 1241569 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Close-up of pseudothecia on underside of needle. |
| 1241570 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
Micrograph of needle cross section with pseudothecia emerging from stomata on underside. |
| 1234180 |
peach scab |
Venturia carpophila |
|
| 1436027 |
Helminthosporium leaf blotch |
Drechslera avenacea |
|
| 1436030 |
barley leaf stripe |
Pyrenophora graminea |
|
| 2251043 |
Swiss needle cast |
Phaeocryptopus gaeumannii |
close-up view of infected needle |
| 0364003 |
Venturia leaf scabs and blights |
Venturia spp. |
infected leaves |
