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Alternaria solani is a fungal pathogen that produces a disease in tomato and potato plants called early blight. The pathogen produces distinctive "bullseye" patterned leaf spots and can also cause stem lesions and fruit rot on tomato and tuber blight on potato. Despite the name "early", foliar symptoms usually occur on older leaves. [3]
Septoria lycopersici infects the tomato leaves via the stomata and also by direct penetration of epidermal cells. [3] Symptoms generally include circular or angular lesions most commonly found on the older, lower leaves of the plant. [1] The lesions are generally 2–5 mm in diameter and have a greyish center with brown margins.
Pseudocercospora fuligena is a fungal plant pathogen infecting tomatoes. [2] It is the cause of the fungal disease black leaf mold. [3] The fungus was first described in the Philippines in 1938 and has since been reported in numerous countries throughout the tropics and subtropics.
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For easier removal, start pulling old tomato plants when they turn brown with frost. If your tomatoes have no signs of disease or pests, you can clip their stems off at the soil line and allow the ...
Common mosaic of tomato (internal browning of fruit) Tobacco mosaic virus (TMV) Curly top: Curtovirus: Potato virus Y Potato virus Y: Pseudo curly top Tomato pseudo-curly top virus: Tomato bushy stunt Tomato bushy stunt virus: Tomato etch Tobacco etch virus: Tomato fern leaf Cucumber mosaic virus: Tomato mosaic Tomato mosaic virus Tomato mottle
Stemphylium solani is a plant pathogen fungus in the phylum Ascomycota. It is the causal pathogen for grey leaf spot in tomatoes and leaf blight in alliums and cotton, though a wide range of additional species can serve as hosts. Symptoms include white spots on leaves and stems that progress to sunken red or purple lesions and finally leaf ...
Senescent leaves with early blight infections and leaves with flea beetle injury are especially important spore sources because the fungus can colonize and produce new spores in these wounded areas. The growth of C. coccodes is most rapid at 80 °F (27 °C), although the fungus can cause infections over a wide range of temperatures between 55 ...