Disease
Scleroderris Canker
Gremmeniella abietina (Lagerberg) MoreletScleroderris canker is a serious fungal disease of pines and several other conifers, caused by Gremmeniella abietina. In the United States it is most…
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Plant problem library
Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
Disease
Grapevine leafroll disease associated with GLRaV-3
Ampelovirus trivitis (grapevine leafroll-associated virus 3; GLRaV-3)Grapevine leafroll-associated virus 3 (GLRaV-3) is the principal virus associated with grapevine leafroll disease, a serious disorder of wine, table, raisin, and juice grapes.…
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Disease
Grapevine fleck disease
Maculavirus vitisGrapevine fleck disease is caused by Grapevine fleck virus, a phloem-limited virus that is commonly symptomless in Vitis vinifera cultivars and many grape rootstocks.…
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Disease
Grapevine Fanleaf Virus
Nepovirus foliumflabelli (syn. Grapevine fanleaf virus; GFLV)Grapevine fanleaf virus causes a destructive degeneration disease of grapevines, with distorted fan-shaped leaves, yellow mosaic or vein banding, shortened internodes, poor fruit set,…
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Disease
Golovinomyces orontii powdery mildew
Golovinomyces orontiiGolovinomyces orontii is a living-tissue-dependent powdery mildew fungus associated with cucurbits and several other broadleaf hosts. It produces conspicuous white patches on leaves and…
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Disease
Powdery mildew caused by Golovinomyces cichoracearum
Golovinomyces cichoracearumGolovinomyces cichoracearum is an obligate powdery mildew fungus associated with cucurbits and several other documented hosts. It produces white, flour-like colonies on living foliage…
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Disease
Chestnut brown rot
Gnomoniopsis smithogilvyiChestnut brown rot is a fungal disease caused by Gnomoniopsis smithogilvyi. It primarily damages chestnut kernels, often without obvious external symptoms at harvest. Brown…
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Disease
Take-All Root Rot
Gaeumannomyces graminis group; wheat take-all is commonly associated with Gaeumannomyces graminis var. tritici, also treated in current taxonomy as Gaeumannomyces triticiTake-all root rot is a soilborne disease of grasses and cereal crops caused by members of the Gaeumannomyces graminis group. In the United States,…
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Disease
Fusarium solani species complex: root, crown and fruit rots
Fusarium solani species complex (FSSC); older reports may use Fusarium solani sensu latoFusarium solani is now understood mainly as a species complex containing several closely related soilborne fungi. Depending on the host and pathogen lineage, it…
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Disease
Fusarium wilt
Fusarium oxysporum species complexFusarium wilt is a soilborne vascular disease caused by host-specific pathogenic strains within the Fusarium oxysporum species complex. Infected plants commonly show one-sided or…
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Disease
Fusarium head blight (scab)
Fusarium graminearum Schwabe sensu strictoFusarium graminearum is a major cereal disease fungus in the United States, best known for Fusarium head blight, or scab, of wheat and barley.…
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Disease
Fusarium culmorum Crown Rot and Head Blight of Cereals
Fusarium culmorum (Wm. G. Sm.) Sacc.Fusarium culmorum is a soil- and residue-associated fungal pathogen that most consistently affects wheat and other small grains. It can cause crown, foot, root…
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