Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
Golovinomyces 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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Chestnut 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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Golden nematode, Globodera rostochiensis, is a soil-dwelling quarantine pest of potato and other susceptible solanaceous plants. Feeding on roots can produce stunting, yellowing, wilting…
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Globodera pallida is a regulated, soil-borne nematode pest of potato and other solanaceous hosts. It attacks roots, causing patchy poor growth, chlorosis, wilting during…
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Take-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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Fusarium 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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Fusarium 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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Fusarium 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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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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A Frankliniella occidentalis, vagyis a nyugati virágtripsz apró, sok tápnövényen előforduló szívó-rágó kártevő. Főként virágokban, zsenge levelekben és hajtáscsúcsokban táplálkozik, ahol ezüstös hegesedést, barnuló…
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Northern corn leaf blight is a fungal leaf disease caused by Exserohilum turcicum, most important on susceptible field, sweet and popcorn hybrids. It produces…
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Azalea leaf and flower gall is a fungal disease associated with Exobasidium vaccinii. On azaleas and rhododendrons it produces swollen, thickened, curled leaves, flowers…
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