Andy Wyenandt

Basil downy mildew

Basil Downy Mildew remains active in New Jersey. All basil growers should scout on a daily basis and taking appropriate preventative measures.

Cucurbit downy mildew

Cucurbit Downy Mildew has been reported as far north as northern Maryland and in central Michigan to-date. With the latest weather this past week, all cucurbit growers should scout on a regular basis and adjust fungicide programs accordingly and begin to apply downy mildew specific fungicides if not already done so. Organic growers should apply copper or other OMRI-approved products to help prevent and suppress downy mildew development. If you suspect CDM on your farm please contact your count agent so we can confirm and report it. To track downy mildew in the US please visit NCSU’s Downy Mildew Forecasting Website.

Cucurbit growers should scout on a regular basis and adjust fungicide programs to incorporate powdery mildew specific fungicides into their weekly fungicide programs.

Peppers and Tomatoes

Bacterial leaf spot has been reported on both crops. Heavy wind and rains have been experienced throughout the state. Remember that all bacteria need a natural opening (i.e., stomata) or a wound (i.e., from typing or pruning) to enter a plant to start an infection.
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More late blight was reported in Pennsylvania this past week in Clinton, Lackawanna, and Berks Counties. The wet weather this past week as been ideal for its development across most of the mid-Atlantic region.

To date, no late blight has been reported in New Jersey on potatoes or tomato. However, all tomato and potato growers in New Jersey should be scouting and applying preventative fungicides on a regular basis.

For more information on late blight in PA see Late Blight is Spreading Across Pennsylvania.

• 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/.

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