Insects
Similarly, Ken Ferrie says to time your post-herbicide application in corn based on weed size and to address cutworm based on the level of damage you find. One pass in the field could work for both, but don’t bet on it.
Agronomists are reporting high numbers of black cutworm and true armyworm moths in pheromone traps. Their offspring, the larvae, can do serious harm to corn. So can the offspring of four other common moth species.
Farmers in some states can expect BCW damage in corn by mid-May. One larva can ruin five corn plants in a 24-hour period. Rescue treatments are most effective and economical -- not seed treatments or Bt hybrids.
True armyworm (not to be confused with fall armyworm) is moving into Midwest wheat and corn crops now. Many are newcomers from the South, but homegrown populations are also concerning in Illinois, Indiana and Michigan.
Farmers in Iowa and parts of Illinois, Minnesota, Nebraska, Wisconsin and South Dakota are in the “red zone” for CRW pressure this season.
The first-of-its-kind biotech trait is commercially available to farmers as Bollgard 3 ThryvOn cotton with XtendFlex Technology – just in time for the 2023 production season.
Why a New App Designed by Iowa State Could Be a Game Changer to Identify and Diagnose Unwanted Pests
A new pest ID app designed by Iowa State University is the first of its kind for not only insect detection, but also suggested management practices that can help farmers rid their fields of unwanted pests.
Stink bugs are best known for their stench when squashed. However, the insect is gaining more notoriety in the Midwest for another reason — their love of soybeans.
This was a familiar scene in fields across the Midwest this season. Not only did volunteer corn impact soybean yields, agronomists say it sheltered rootworm eggs that can overwinter and infest corn crops next spring.
Corn subjected to heavy rainfall can still deliver a significant yield response to a nitrogen application -- in some cases, up to 60 bu.