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New Photo Gallery: Phytophthora blight on beans

Beans are not as commonly affected by Phytophthora blight as other crops, notably cucurbit crops and peppers.  Beans have not been recognized as a host for the pathogen (Phytophthora capsici) for very long.  First report was 2003 in Michigan.  In 2008 the disease was confirmed on Long Island, and subsequently was observed in upstate New York.  Symptoms can be limited to pod rot.  Varieties producing long pods touching the soil are most likely to be affected.  Blight affecting whole plants has been observed in low areas of fields following rainstorms that resulted in standing water.

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