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Plant Disease

Integrated pest management is a comprehensive strategy to keep your lawn and garden pest and disease-free. WVU Extension Service resources help in preventing, identifying and finding solutions to common gardening problems.

powdery mildew

Landscape Tree Disease


Plant Diagnostic Clinic

Plant Diagnostic Clinic


fruit tree disease

Tree Fruit Disease


Plant Disease News

Plum curculio: a troublesome pest of tree fruits

The plum curculio, Conotrachelus nenuphar (Herbst), is an important early-season pest of tree fruits. They can cause considerable damage to apple, pear, apricot, peach, plum, nectarine, cherry and other fruits.

Adult plum curculio

Plum curculio adults are a type of weevil (or snout beetle), approximately 6 mm (¼ inch) in length with a mottled combination of brown, black and gray colors over the body. They have four small humps on their wing covers (elytra) and a characteristic curved snout (Figure 2).

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New tomato variety released possessing multiple disease resistance

Newly released tomato variety. (Photo credit: MM Rahman)

Late blight resistant West Virginia ’63 tomato is a favorite to organic and small growers in West Virginia. However, its susceptibility to Septoria leaf spot caused by the fungal pathogen Septoria lycopersici concerns growers. 

Cornell University released a F₁ hybrid, Iron Lady, with resistance to Septoria leaf spot and late blight resistance partly obtained from the WV ’63.  We crossed the WV ’63 with the Iron Lady and selected field-grown plants resistant to Septoria leaf spot. We tested for this tolerance by inoculating six-week old, nutrient-stressed plants in the greenhouse. The WV ’63 plants were killed; whereas, the hybrid selections survived. 

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