- Cucurbit downy mildew was confirmed in Wicomico County, Maryland late last week. All growers should continue to scout all cucurbit fields on a regular basis. Once harvesting is finished all fields should be disked under and or sprayed with gramoxone. Please see the 2014 Commercial Vegetable Recommendations Guide for specific fungicide recommendations. To track the progress of cucurbit downy mildew please visit North Carolina State University’s Cucurbit Downy Mildew Forecasting Center at http://www.ces.ncsu.edu/depts/pp/cucurbit/
- Phytophthora crown rot is being reported in multiple crops. Weather conditions for the past few days have been ideal for its development.
- There have been no new reports of Late blight in the region. To date, Late blight has been reported in Lancaster County, PA and confirmed in west central PA; on Long Island, NY and western NY. To track late blight in the US please visit http://usablight.org/.
July 15, 2014 Andy Wyenandt
Vegetable Disease Briefs 7-15-14
July 3, 2014 Andy Wyenandt
Controlling Cucurbit Downy Mildew
Once cucurbit downy mildew (CDM) is detected in the mid-Atlantic region (as of yesterday in Maryland) all cucurbit growers in New Jersey should begin to include downy mildew specific fungicides in their weekly fungicide programs on all cucurbit crops.
Symptoms of cucurbit downy mildew on infected cucumber leaf.
July 2, 2014 Andy Wyenandt
Cucurbit Downy Mildew Confirmed in Maryland 7-2-14
Cucurbit downy mildew has been confirmed on cucumber in Caroline County, Maryland.
This is the first report of cucurbit downy mildew in the mid-Atlantic region this growing season. All cucurbit growers should scout their fields on a regular, if not, daily basis. All cucurbit growers should consider switching to a preventative fungicide program that includes downy mildew specific fungicides. For more information, please see the 2014 Commercial Vegetable Fungicide Recommendations Guide.
July 1, 2014 Andy Wyenandt
Vegetable Disease Briefs 7-1-14
- Late blight has been confirmed on potato and tomato in Lancaster County, PA and confirmed on potato in west central PA (Cambria County); in potato on Long Island, NY (Suffolk County) and on potato in western NY (Erie County). To date, no late blight has been reported in NJ. To track late blight in the US please visit http://usablight.org/.
- Basil downy mildew has been reported in New Jersey. With current weather conditions all basil growers should scout on a daily basis and taking appropriate preventative measures.
- Cucurbit downy mildew has been reported on cucumber as far north as central North Carolina as of 6/20. No cucurbit downy mildew has been reported in the region to date. To track cucurbit downy mildew in the US please visit http://cdm.ipmpipe.org/
June 30, 2014 Andy Wyenandt
Late Blight Reported in Erie County, NY and Cambria Couny, PA
Late blight was reported on potato in Erie County, New York and Cambria County, PA (west central) late last week. This is the first report of late blight in PA this season. There are also suspected cases of late blight are being reported on potato and tomato in Lancaster County, PA.
All tomato and potato growers in New Jersey should begin to scout their fields on a regular, if not daily basis. There have been no reported cases of late blight in New Jersey to date! However, all growers (conventional and organic) who have not initiated protectant fungicide maintenance programs should consider doing so. For organic growers, preventative copper applications should be considered. For more information on controlling late blight please see the 2014 Commercial Vegetable Fungicide Recommendations Guide.
June 22, 2014 Andy Wyenandt
Late Blight Reported in Potato on Long Island
Late blight has been reported on potato on Long Island. This is the first report of late blight in the region to date. Potato and tomato growers should scout their fields on a regular, if not, daily basis and initiate their regular preventative fungicide programs if not already done so.
