![]() ![]() If symptoms begin to develop on fruit after harvest, they should be removed and properly disposed of. Once fruit are infected, they are no longer good and should be removed from the garden to prevent further spread of the disease. Spores from infected crowns, vines, and fruit may spread to other healthy plants via rainfall and through puddling water which may be slow to drain off the soil surface. As infection progresses fruit will become soft and collapse. ![]() Symptoms of Phytophthora blight on infected fruit include the production of white, slimy spore masses, which develop on the undersides of infected fruit. Late in the growing season Phytophthora blight may infect mature green or ripe pumpkin fruit. Infected, wilted plants may appear to recover, but will eventually collapse and die as water uptake is shut down due to infection. White, greasy spore masses may appear on infected vines under prolonged periods of warm, wet weather. Symptoms on infected vines include water-soaked lesions which turn a blackish-brown color and have a slimy appearance. Mature pumpkin fruit with masses of white, slimy spores of Phytophthora blight. If crown rot occurs, infected plants may suddenly wilt and collapse. Phytophthora blight can be a serious disease of pumpkin grown in wet soil causing crown, vine, and fruit rot. Commonly found diseases of cucurbit crops in homeowner gardens, their diagnostic features and control measures, are outlined below. Using proper crop rotations, resistant varieties, and cultural practices, will help reduce the chances for disease development in cucurbit crops grown in the home garden. Control of these important diseases begins with scouting and proper diagnosis. Some of these diseases are soil-borne (Phytophthora, Fusarium, Chaonephora, White speck), and others (Powdery and Downy mildew) are blown in on air currents from the southern United States each growing season. ![]() In general, all cucurbit crops are susceptible to a number of common diseases on an annual basis. Cucurbit crops (cucumber, pumpkin, summer and winter squash, melon, and gourd) are commonly grown in the home garden. ![]()
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