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 29, 2015

Vegetable Twilight Meeting & Research Tour

Date: Thursday, August 20, 2015, 5:30 p.m.

Location: Meet at the trailer near parking lot
Rutgers Agricultural Research & Extension Center
121 Northville Road, Bridgeton, NJ (Upper Deerfield)

Agenda

  • 5:30: Taste the new tomato breeding lines that will be released soon and tour the tomato plots
    Tom Orton, PhD, Specialist in Vegetables
    Check out a mobile market/portable cooler trailer with CoolBot™’s alternative to high cost refrigeration units
    Rick VanVranken, Agricultural Agent Atlantic County
  • 6:00: *Summer/Winter Squash and Cucumber fungicide evaluations for Downy and Powdery Mildew Control
    C. Andrew Wyenandt, PhD, Specialist in Vegetable Pathology
  • 6:30: Advances in breeding lines and fungicide evaluation for basil Downy Mildew Control
    Rob Pyne, Graduate Student, Rutgers and C. Andrew Wyenandt, PhD
  • 7:00: Fungicides for controlling Phytophthora Blight control in cucurbits
    C. Andrew Wyenandt, PhD
  • 7:30: Evaluation of Bell Peppers cultivars and breeding lines for Phytophthora tolerance
    C. Andrew Wyenandt, PhD
  • 8:00: *Slicing and pickling cucumber variety evaluation for yield and Downy Mildew tolerance
    Wes Kline, PhD, Agricultural Agent
  • 8:30: Phomopsis Blight control in eggplant
    C. Andrew Wyenandt, PhD

*The cucurbit studies are funded in part through the Charles E. and Lena Maier Fund, the Vegetable Growers Association of New Jersey and the New Jersey Agricultural Experiment Station

Filed Under: Commercial Ag Updates, Vegetable Crops
July 29, 2015

Veg IPM Update: Week Ending 7/29/15

Sweet Corn

ECB 7-29-2015

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European corn borer (ECB) adult activity is stable, with low level activity in parts of the state now. This is the beginning of the second adult flight. Areas of highest activity are still along the Delaware Bay Shore and in central Morris County (see ECB map), but areas between should fill in over the next week.

As always, consider treating when the number of infested plants in a 50 plant sample exceeds 12%. Any planting remaining at or above threshold as it proceeds to full tassel should be treated, as this is the last stage at which ECB larvae will be exposed and vulnerable to insecticidal sprays.

See the 2015 Commercial Vegetable Recommendations Guide for insecticide choices.
[Read more…]

Filed Under: Vegetable Crops
July 22, 2015

Veg IPM Update: Week Ending 7/22/15

Sweet Corn

Click to View

Click to View

European corn borer (ECB) adult activity is starting to increase in parts of the state now. This is the beginning of the second adult flight. Areas of highest activity are currently along the Delaware Bay Shore and in central Morris County (see ECB map), but areas between should fill in over the next week.

As always, consider treating when the number of infested plants in a 50 plant sample exceeds 12%. Any planting remaining at or above threshold as it proceeds to full tassel should be treated, as this is the last stage at which ECB larvae will be exposed and vulnerable to insecticidal sprays.

See the 2015 Commercial Vegetable Recommendations Guide for insecticide choices.
[Read more…]

Filed Under: Vegetable Crops
July 22, 2015

Cucurbit Downy Mildew Reported: Watermelon & Butternut Squash in NJ ALERT – 7/22/15

Cucurbit downy mildew has been reported on watermelon (Warren County) and butternut  squash (Hunterdon County) in Northern New Jersey. This is the first report on both crops this season. Downy mildew was confirmed on cucumber in New Jersey on July 9th.

All cucurbit growers should include downy mildew specific fungicide(s) in their weekly programs. For more information on the controlling downy mildew on all cucurbit crops please see the 2015 Commercial Fungicide Recommendations Guide. To track the progress of cucurbit downy mildew in the US please visit http://cdm.ipmpipe.org/

Filed Under: Vegetable Crops
July 20, 2015

Vegetable Disease Briefs – 7/20/15

  • There have been no new reports of late blight in New Jersey since 7/8. To track late blight in the US please visit http://usablight.org/
  • Cucurbit downy mildew has been reported on cucumber in New Jersey and on cucumber and butternut squash in PA this past week. To track the progress of CDM in the US please visit http://cdm.ipmpipe.org/.
  • Bacterial leaf spot is being reported on pepper and tomato.
  • Basil downy mildew remains active across the region.
  • Phytophthora blight has been reported on multiple crops.
  • Pepper anthracnose has been reported in southern New Jersey.

 

Filed Under: Vegetable Crops
July 15, 2015

Veg IPM Update: Week Ending 7/15/15

Sweet Corn

Click to View

Click to View


There is still very little European corn borer (ECB) adult activity at this time. Few individuals have been captured throughout NJ this past week (see ECB map). ECB infestations are absent from sweet corn plantings. We would expect to see signs of the second flight within the next week or so.

As always, consider treating when the number of infested plants in a 50 plant sample exceeds 12%. Any planting remaining at or above threshold as it proceeds to full tassel should be treated, as this is the last stage at which ECB larvae will be exposed and vulnerable to insecticidal sprays.

See the 2015 Commercial Vegetable Recommendations Guide for insecticide choices.
[Read more…]

Filed Under: Vegetable Crops