Sweet Corn
European corn borer (ECB) catches have again fallen to levels too low to register a map image. This pest is not much of a threat at this point, with most remaining plantings in silk. ECB feeding in less mature NJ sweet corn plantings is nearly non-existent now. Sprays for fall armyworm and corn earworm will manage any ECB larvae at this time. [Read more…]
Archives for September 2017
Veg IPM Update: Week Ending 9/27/17
Vegetable Disease Update – 9/24/17
- Late blight has been reported in western NY and Long Island this past week. Late blight has not been reported on tomato or potato in NJ to date. If you suspect Late blight on your farm please contact your county Extension agent. To track the progress of Late blight in the US please visit USAblight.
- Cucurbit downy mildew (CDM) continues to be reported throughout the region. All cucurbit growers are encouraged to continue to include downy mildew specific fungicides in their regular weekly maintenance programs. To track CDM movement in the US please visit the North Carolina State University’s CDM Forecasting Website.
- Fusarium and Rhizoctonia root rot has been reported in Cilantro and parsley this past week.
Understanding root rots in fall-seeded and transplanted crops
Damping-off is caused by a number of important vegetable pathogens and is very common at seeding and transplanting in spring and fall. Damping-off can kill seedlings before they break the soil line (pre-emergent damping-off) or kill seedlings soon after they emerge (post-emergent damping-off) or soon after transplanting. Common pathogens that cause damping-off include Pythium, Phytophthora, Rhizoctonia, and Fusarium spp.
It is extremely important to know which pathogen is causing the damping-off problem and which fungicide to properly apply.
Veg IPM Update: Week Ending 9/20/17
Sweet Corn
European corn borer (ECB) catches are still very low, but enough adults were caughted this week to register a map image. This pest is not much of a threat at this point, with most remaining plantings in silk. ECB feeding in less mature NJ sweet corn plantings is nearly non-existent now. Sprays for fall armyworm and corn earworm will manage any ECB larvae at this time. [Read more…]
NJ DEP Surveying Irrigation Water Certs & Logs
A call from a local farmer late last week indicated an NJ DEP inspector had stopped by to ‘survey’ water use and had asked to inspect his irrigation records. The call was to say, “Thank you!” for having given him earlier in the year an irrigation pump log sheet to use. He had made a couple of copies and given them to his irrigation manager who has been recording the hours pumped every day. The inspector was happy to see that. The farmer was happier. [Read more…]
Veg IPM Update: Week Ending 9/13/17
Sweet Corn
European corn borer (ECB) catches remain too low to register a map image. This flight has been extremely low and very spotty. ECB feeding in NJ sweet corn plantings is nearly non-existent now. What remains has been overshadowed by fall armyworm (FAW) feeding. Check 5 plants each in 10 random locations for a 50 plant sample. Look for “shot-hole” injury, and consider treating when the number of infested (from ECB or FAW) plants in a 50 plant sample exceeds 12%. Once plants hit full tassel, ECB larvae will move downward on the stalk and re-enter the plant near the area where ears are forming. This can result in direct injury to the ear. For growers who still have corn that has yet to silk, consider an insecticide application at the full tassel stage to target ECB larvae as they migrate downward. This application can eliminate larvae that have escaped any earlier insecticide applications. [Read more…]