White speck on vine and stem of infected pumpkin plant. Note the numerous small, white diamond shaped lesions.
White speck lesions covering the surface of immature and mature pumpkin fruit. White speck will only cause cosmetic injury to fruit.
August 6, 2013 Andy Wyenandt
Cucurbit downy mildew confirmed on pumpkin in Morris County – 8/6/13
Cucurbit downy mildew has been reported on pumpkin in Morris County. This is the first report of downy mildew on pumpkin this growing season. Cucurbit downy mildew has also been showing up on cucurbit crops (other than cucumber) in other states this past week. All cucurbit crops in New Jersey are at risk for downy mildew. Downy mildew specific fungicides should now be a part of all weekly fungicide maintenance programs if not already initiated. For current 2013 Cucurbit Downy and Powdery Mildew Management Guidelines please see post from 6/7/13. If you suspect downy mildew on any cucurbit crop please contact your county agent. Please visit http://cdm.ipmpipe.org/ to track the progress of downy mildew throughout the US.
