Septoria leaf spot of tomato caused by the fungus Septaria lycapersici occurs on tomatoes worldwide. The fungus infects only solanaceous plants, of which tomato is the most important. Tomatoes may often be infected with ...

For the past century the Mexican bean beetle has been a pest in the United States. Until 1920, when it was discovered in northern Alabama, it was a more or less serious bean pest in the western part of the United States ...

Many vegetables in the family Cruciferia are grown in New York, including cabbage, cauliflower, broccoli, Brussels sprouts, Chinese cabbage, mustard greens, turnip, and radish. Although at least six viruses are known to ...

Although scab of slicing and pickling cucumbers is rare because of the availability of many resistant varieties, this disease can still be of significance for other cucurbits including summer and winter squash, true and ...

Peas are susceptible to a large number of aphid-transmitted viruses, which can produce diseases individually or in combination. Many common names have been used to describe these diseases, and to avoid confusion they will ...

Except for virus diseases, bacterial spot is the most important disease affecting peppers in New York. A mild case of bacterial spot causes prominent necrotic spots on leaves; a severe case can cause premature leaf drop ...

Tomato anthracnose is a serious disease of processing tomatoes caused by the fungus Colletotrichum coccodes and is a threat to tomatoes grown in New York State. To minimize the mold count in processed tomato products, ...

Root-lesion nematodes (primarily, Pratylenchus penetrans) are major pathogens of vegetables in New York and the Northeast impacting both the quality and quantity of marketable yield. They are migratory endoparasites, ...

Rhizoctonia solani is a fungus that attacks tubers, underground stems, and stolons of potato plants. Although it probably occurs wherever potatoes are grown, it causes economically significant damage only in cool, wet ...

Yellows or fusarium wilt of cabbage has been known in New York since 1899 when it was found first in the Hudson Valley. It now occurs in all states where cabbage is grown in warm seasons. Yellows is no problem in the ...