Squash Diseases Like any other crop, squash is susceptible to a variety of diseases that attack below- and above-ground parts of the plant. Major squash diseases include gummy stem blight/black rot, scab, powdery mildew, nematodes and several viral diseases. Because many of the fungal, bacterial and nematode pathogens survive in soil and/or crop debris, crop rotation with non-cucurbit crops for at least three years is highly recommended. |
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