Phytophthora blight has been the most destructive disease of cucurbit crops on Long Island, and the most challenging disease to manage effectively. Information about this disease and its management are posted at the VegetableMD website.
Crown rot is one of the common symptoms of Phytophthora blight. Affected tissue often looks water-soaked and collapsed, especially with young plants. Symptoms often extend up the stem from the crown rather extending down into the taproot as occurs routinely with Fusarium crown and root rot. Affected plants wilt.