Detailed profiles of common plant diseases, pests, nutrient deficiencies and environmental problems.
Tomato yellow leaf curl virus (TYLCV) is a serious, whitefly-transmitted viral disease of tomato. Infected plants become stunted, with small, upward-curling leaves, strong crumpling,…
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Tomato spotted wilt virus is a serious, thrips-transmitted disease that can stunt or kill young tomato plants and blemish fruit with rings, blotches and…
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Tomato mosaic virus (ToMV) is a highly contagious viral disease of tomato and other documented solanaceous hosts. It produces irregular light- and dark-green leaf…
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Tomato brown rugose fruit virus (ToBRFV) is a highly contagious viral disease of tomato and pepper. It can cause mottled or fern-like foliage, stunting,…
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Tobacco mosaic virus is a highly persistent plant virus that causes irregular light- and dark-green mottling, leaf distortion, stunting and reduced crop quality in…
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Dwarf bunt of wheat is a soil- and seedborne smut disease caused by the fungus Tilletia controversa. It mainly affects fall-sown winter wheat where…
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Common bunt, also called stinking smut, is a seedborne and soilborne fungal disease of wheat caused by Tilletia caries. Infected plants may look only…
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Pocket plum is a fungal disease of young plum and blackthorn fruit caused by Taphrina pruni. Shortly after flowering, infected fruit enlarge rapidly, become…
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Peach leaf curl is a fungal disease of peach and nectarine trees caused by Taphrina deformans. It appears soon after bud break as thickened,…
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Potato wart is a serious, soilborne quarantine disease caused by the obligate chytrid fungus Synchytrium endobioticum. It produces rough, cauliflower-like galls on potato tubers,…
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Potato common scab is a soilborne bacterial disease associated with Streptomyces scabiei, formerly commonly called Streptomyces scabies. It causes rough, tan-to-brown, corky lesions that…
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Strawberry mild yellow edge virus is an aphid-transmitted virus of strawberries that may cause marginal yellowing, leaf distortion, dwarfing and reduced fruit size in…
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