Rutgers Cooperative Extension
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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Canada thistle can be difficult to manage because of its deep taproot, perennial growth, and ability to reproduce through both seed dispersal and root shoots. Learn more about non-herbicide life cycle disruptions that can be used in the development of a short and long term management plan through the Canda thistle decision tool fact sheet and an informational video. These resources are one of a five-part weed management series funded by USDA Specialty Crop Block Grant AM190100.
Wednesday, August 24, 2022, 4:30 pm (meet at the shelter near the parking lot)
Rutgers Agricultural Research & Extension Center
121 Northville Rd., Bridgeton, NJ (Upper Deerfield)
PESTICIDE CREDITS approved for this event:
1A (AGRICULTURAL PLANT) – 07
10 (DEMONSTRATION & RESEARCH) – 07
PP2 (PRIVATE APPLICATOR CATEGORY) – 07
4:30 – Welcome and Intros – Rick VanVranken, Atlantic County Agricultural Agent
5:00 – 8:30 pm Tour of research plots and discussions with Rutgers Extension Specialists
Thierry Besancon, PhD, Extension Weed Specialist for Specialty Crops
Andy Wyenandt, PhD, Specialist in Vegetable Pathology
Joe Ingerson-Mahar, PhD, Vegetable IPM Coordinator
Attention: There have been significant increases in CEW moth catches in pheromone traps in parts of the state during the past 2 days. At this time, these increases are largely in southwestern NJ, although elevated catches have occurred as far north as Warren County.
Noteworthy Sweet Corn catches include:
Eldora (Cape May)- 187/night
Green Creek (Cape May) – 183/night
Jones Island (Cumberland)- 133/night
Allamuchy (Warren) – 64/night
Peppers:
E. Vineland – 33/night
Blacklight and pheromone networks are indicating a 3-day silk spray schedule in much of the state. All growers in south and central counties should be on 3-day silk spray schedules for sweet corn. Cape May, Cumberland, Atlantic and Salem County growers are especially at risk of infestation if strict spray schedules are not observed. Growers in the northern counties should be on 3-4 day schedules, as recommended by local traps. The current population continues to be a serious economic threat. It is important to use effective materials to manage this pest on silking corn. Insecticides in the IRAC 28 class (Coragen, Besiege, Exirel) and IRAC 5 (Radiant, Blackhawk, Entrust (OMRI approved)) remain among the most useful insecticides against CEW.
Silking Spray Schedules*:
South – 3 days
Central – 3 days
North – 3-4 days
*These recommendations are based on regional catches. Adhere to tighter spray schedules if indicated by local trap catches. Synthetic pyrethroids alone should NOT be used for corn earworm (CEW) protection on silking corn, or for fall armyworm (FAW) management at any stage. Control with these materials is very inconsistent.
Sweet Corn
European corn borer (ECB) moth catches remain stable at low levels throughout the state. ECB population maps will resume if second flight catches rise to high enough numbers. Only occasional feeding in sweet corn has been detected by field personnel.
The highest nightly trap catches of ECB for the week ending 08/10/22 are as follows:
| Blairstown 1 | Downer 1 | Milltown 1 |
| Califon 1 | Farmingdale 1 | New Egypt 1 |
| Cinnaminson 1 | long Valley 1 | Oldwick 1 |
| Dayton 1 | Matawan 1 | Sergeantsville 1 |
