Pest
Turnip moth (Agrotis segetum)
Agrotis segetumAgrotis segetum, commonly called the turnip moth, is an Old World noctuid whose caterpillars act as cutworms. They feed at night on seedlings, foliage,…
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Plant problem library
Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
Pest
Black cutworm
Agrotis ipsilon (Hufnagel, 1766)Black cutworm, Agrotis ipsilon, is a nocturnal moth pest whose larvae attack young corn, vegetables, strawberries, turfgrass and many other plants. Small caterpillars chew…
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Disease
Crown gall
Agrobacterium tumefaciens (現在 commonly classified as Rhizobium radiobacter)Crown gall is a bacterial disease caused by Agrobacterium tumefaciens, also known in current taxonomy as Rhizobium radiobacter. It produces irregular, tumor-like swellings on…
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Pest
Dusky wireworm
Agriotes obscurus (Linnaeus, 1758)Dusky wireworm is the soil-dwelling larva of the click beetle Agriotes obscurus. It feeds on seeds, roots, crowns, stems and tubers, with grasses and…
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Pest
Lined click beetle (wireworm)
Agriotes lineatusAgriotes lineatus is a European click beetle whose soil-dwelling larva is called a wireworm. The larvae feed on germinating seeds, roots, crowns, underground stems…
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Pest
Green jewel beetle (Agrilus viridis)
Agrilus viridis (Linnaeus, 1758)Agrilus viridis is a metallic green, wood-boring jewel beetle found primarily in Europe and associated with beech, willow, birch, hazelnut and other broadleaf trees.…
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Pest
Emerald ash borer
Agrilus planipennis FairmaireEmerald ash borer (Agrilus planipennis) is an invasive metallic-green beetle whose larvae tunnel beneath the bark of ash trees, disrupting phloem and cambial function.…
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Pest
Borsó-levéltetű
Acyrthosiphon pisumA borsó-levéltetű (Acyrthosiphon pisum) főként borsón, lucernán, bükkönyön, lóbabon és más pillangósokon táplálkozó, szívó szájszervű kártevő. A fiatal hajtásokon és a virágzás–hüvelyképződés időszakában telepei…
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Pest
Apple rust mite
Aculus schlechtendaliApple rust mite, Aculus schlechtendali, is a minute eriophyid mite that feeds mainly on apple foliage and developing fruit. Most infestations remain below damaging…
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Disease
Bacterial Fruit Blotch
Acidovorax citrulliBacterial fruit blotch is a serious, seedborne disease of watermelon and other cucurbits caused by Acidovorax citrulli. It is favored by warm, humid conditions…
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Pest
Wheat curl mite
Aceria tosichella KeiferThe wheat curl mite, Aceria tosichella, is a microscopic eriophyid mite that feeds in the protected folds of wheat and other grasses. Its direct…
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Environmental stress
Salt spray injury
Salt spray injury is a noninfectious environmental disorder caused when windborne seawater or salty deicing-solution droplets deposit on foliage and young shoots. It commonly…
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