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…]
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 20, 2013 Andy Wyenandt
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.
July 20, 2013 Andy Wyenandt
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…]
July 17, 2013 Kris Holmstrom and Joe Ingerson-Mahar
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
July 16, 2013 Andy Wyenandt
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.
July 12, 2013 Brad Majek
How Rainfall Influences Residual Herbicides
Heavy rains the past month have caused concern that residual preplant incorporated and preemergence herbicide applications may and not provide the length of weed control expected and increase the risk of crop injury compared to when rainfall is closer to average. The affect of the additional rainfall on herbicide activity and crop safety is complex, and is influenced the soil and the chemical properties of each herbicide. [Read more…]
