Rutgers University | New Jersey Agricultural Experiment Station | Pesticide User Responsibility

Vegetable Crops Edition

Seasonal updates and alerts on insects, diseases, and weeds impacting vegetable crops. New Jersey Commercial Vegetable Production Recommendations updates between annual publication issues are included.
 
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July 23, 2013

Vegetable Disease Briefs – 7/23/12

Late blight Update

No Late blight has been reported in New Jersey this week.

Basil

Downy mildew – All basil growers should scout on a daily basis and should add a labeled downy mildew specific fungicide to their weekly fungicide program. Phosphite fungicides (FRAC code 33), such as Prophyt, K-Phite, and Rampart have shown the best efficacy in trials at RAREC. Actinovate (OMRI- approved) is also labeled for downy mildew control. Please remember, all abandoned basil fields should be worked under immediately after last harvest to kill the foliage! [Read more…]

Filed Under: Vegetable Crops
July 22, 2013

Kudzu bug in the Region

As predicted, the kudzu bug has appeared in our region.  The first specimens have been found by a private consultant in southern Delaware and other specimens have been found in Harford, Maryland, northeast of Baltimore.  Since its discovery in Georgia in 2009, the bug has rapidly spread across the southeastern US, now from Louisiana to Maryland and Delaware.  It is beneficial in that it feeds on kudzu and may actually help suppress it, but it also feeds on soybeans and other legumes, and, like the brown marmorated stinkbug, invades homes and structures in large numbers. We have no confirmed sightings in New Jersey, as far as known.  [Read more…]

Filed Under: Vegetable Crops
July 20, 2013

Vegetable Briefs – 7/20/13

  • Cucurbit downy mildew (CDM) has been reported on cucumber throughout the state.  All cucurbit growers should scout their fields on a regular basis and should add downy mildew specific fungicides to their regular maintenance program. CDM should be making the jump from cucumber to other cucurbit crops soon, if it hasn’t already done so. If you find CDM on cucurbits besides cucumber please let us know. Once plantings are done being harvested they should be disced under or hit with gramoxone immediately. To track cucurbit downy mildew in the US please visit http://cdm.ipmpipe.org/
  • Cucurbit powdery mildew (CPM)  This hot weather is ideal for cucurbit powdery mildew development. All growers should scout on a regular basis and continue with their regular maintenance programs. There are a number of fungicides available to control CPM. Please see the 2013 Commercial Vegetable Production Recommendations for more information. Organic cucurbit growers can apply OMRI-approved sulfur and other labeled products to help suppress CPM development.
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July 20, 2013

Late blight update – 7/20/13

There have been no new reports of late blight in New Jersey this past week. Late blight was reported in Northeast OH, Western NY and Lancaster, PA this past week. The extremely hot, dry weather this week throughout NJ has most likely reduced the immediate threat of late blight, but growers should remain cautious because the pathogen could reappear anytime weather conditions favor its development (There is a threat of rainfall everyday this coming week). [Read more…]

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July 17, 2013

Veg IPM Update: Week Ending 7/17/13

Vegetable IPM Report 7-17-13 – Click to View | Download | Print

Current Week’s Pest Maps – Available Maps for the week are highlighted

Filed Under: Vegetable Crops
July 16, 2013

Late Blight Update – 7/16/13

There have been no new reports of late blight in New Jersey or surrounding region over the past week. Importantly, now that late blight has been found in the region the threat for it to reappear will remain if weather conditions become favorable once again. The hot, dry weather forecasted this week should help reduce threat level for late blight developement.

Filed Under: Vegetable Crops