Wheat head armyworms found in some Kansas fields
click image to zoomHolly Davis-Schwarting, K-State Research and Extension.Figure 1. Wheat head armyworm larva. Wheat head armyworms are becoming more common, and thus more conspicuous, throughout north central and south central Kansas. This insect is only a very minor pest most years, but there are always a few (>1%) infesting most wheat fields.
They are not usually a problem; however, occasionally populations can occur to such an extent as to cause some damage to kernels in the field. Sometimes their feeding on the kernels may even result in wheat being downgraded by the buyers because of what they refer to as “insect-damaged kernels” (IDK).
Figure 2. Wheat head armyworm on wheat awn. Some of the fields sampled this week had numbers of these larvae that are a little higher than usual. The typical feeding position of these larvae is seen in photos 2 and 3 below, where they are feeding directly on the grain.
These pests are not common enough to have caused us to develop any kind of management or control recommendations. They also occur late enough relative to the development of the wheat that insecticide applications would be rather “iffy” and the post-harvest interval (PHI) of any insecticide selected would need to be carefully monitored to ensure label compliance. Figure 3. Closeup of wheat head armyworm on head of wheat.
- What to do now in regards to the 2014 Farm Bill
- Mistakes that hurt a farm's credit
- Mycogen Seeds introduces four new sunflower hybrids for 2015
- China cuts cotton import quotas to boost demand for its own fiber
- Hog futures the exception to bearish ag market rule Monday AM
- Gangster herbicide program update
- Despite USDA approval, Enlist trait faces hurdles
- Activist investor Peltz pushes DuPont to split itself
- USDA approves Dow’s Enlist corn, soybean traits
- Mapping technology help farmers understand soil
- Improve nutrient balance to boost corn yields
- Study shows differences in understanding sustainable agriculture
- U.S. GMO labeling foes triple spending in first half of this year
- Activists fighting Golden Rice even more in 2014
- Source shows half of GMO research is independent
- East-West Seed signs marketing collaboration with Monsanto
- White House issues veto threat on bill to block WOTUS rule
- USDA releases 2012 cash rents data report