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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April 8, 2014

Vegetable Disease Update – 4/8/14

WhiteMold

White Mold (Lettuce)

  • Asparagus
  • Cabbage
  • Cole crops
  • Leeks
  • Lettuce

Asparagus

Phytophthora crown and spear rot – In fields with low spots (poorly drained soils) or fields with a history of crown and/or spear rot apply Ridomil Gold 4SL (mefenoxam, 4) at 1.0 pt/A, or Ultra Flourish 2E/A (mefenoxam, 4) at 2.0 pt/A, or MetaStar 2E (metalaxyl, 4) at 2.0 qt/A over beds just before 1st harvest. For new plantings, apply the same after planting or after crown covering. Do not apply Ridomil or MetaStar one day prior to harvest or illegal residues may result. For more information please see 2014 New Jersey Commercial Vegetable Production Recommendations Guide. [Read more…]

Filed Under: Vegetable Crops
April 8, 2014

Controlling Septoria Leaf Spot in Parsley

Septoria leaf spot (SLS) in Parsley can cause significant losses in fields where it has become established. Like other Septoria’s, the leaf spots produced on parsley look much like the leaf spots produced on tomatoes and other crops. Septoria leaf spot overwinters from year to year on infected debris so long crop rotations of 2 or more years are important to help reduce disease pressure. During the season, SLS will spread rapidly with each subsequent rainfall and/or overhead irrigation event. Therefore, early detection and preventative fungicide applications are key to successfully controlling SLS. Unfortunately, very few fungicides are currently labeled making control difficult.

Parsley SLS

Septoria leaf spot of Parsley

[Read more…]

Filed Under: Vegetable Crops Tagged With: ,
April 7, 2014

Lettuce Weed Control

Work continues to progress toward reinstating the Kerb label for leaf lettuce, but has not been completed and is not expected to be completed in time for use in this year. [Read more…]

Filed Under: Vegetable Crops
April 4, 2014 and

Veg ICM Twilight Meeting Apr 22, 2014

Vegetable Integrated Crop Management Twilight Meeting
Date: Tuesday, April 22, 2014 7:00 p.m. – 9:00 p.m.
Location: East Vineland Fire Hall, Landis Ave. across from the Savoy Restaurant
(park behind the building and enter conference room door in rear)

The Rutgers Cooperative Extension Agricultural Agents of Atlantic, Cumberland and Gloucester Counties invite you to the first twilight meeting of the 2014 season to discuss early spring crop pest control, label updates and management topics. Feel free to bring plant, insect, disease, or weed samples to the meeting to have them identified, or perhaps you can stump the experts. Please bring samples in sealed plastic bags. [Read more…]

Filed Under: Commercial Ag Updates, Vegetable Crops
April 4, 2014

Weed Control in Onions

Weed control in onions can be difficult.  Effective preemergence herbicides do not provide acceptable annual broadleaf control.  Postemergence herbicides cannot be applied until the crop has 2 or 3 true leaves plus the flag leaf. [Read more…]

Filed Under: Vegetable Crops
April 2, 2014

Asparagus Weed Control

Lambsquarters

Weeds make asparagus harvest more difficult.

Maintaining an asparagus field weed free during the two month harvest season requires a planned herbicide application prior to spear emergence.

Choose a postemergence herbicide or tillage to control emerged weeds, and residual herbicides to control annual grasses, and annual broadleaf weeds during harvest.     [Read more…]

Filed Under: Vegetable Crops