Wheat head armyworms found in some Kansas fields

decrease font size  Resize text   increase font size       Printer-friendly version of this article Printer-friendly version of this article

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.

Buyers Guide

Doyle Equipment Manufacturing Co.
Doyle Equipment Manufacturing prides themselves as being “The King of the Rotary’s” with their Direct Drive Rotary Blend Systems. With numerous setup possibilities and sizes, ranging from a  more...
A.J. Sackett Sons & Company
Sackett Blend Towers feature the H.I.M, High Intensity Mixer, the next generation of blending and coating technology which supports Precision Fertilizer Blending®. Its unique design allows  more...
R&R Manufacturing Inc.
The R&R Minuteman Blend System is the original proven performer. Fast, precise blending with a compact foot print. Significantly lower horsepower requirement. Low inload height with large  more...
Junge Control Inc.
Junge Control Inc. creates state-of-the-art product blending and measuring solutions that allow you to totally maximize operating efficiency with amazing accuracy and repeatability, superior  more...
Yargus Manufacturing
The flagship blending system for the Layco product line is the fully automated Layco DW System™. The advanced technology of the Layco DW (Declining Weight) system results in a blending  more...
Yargus Manufacturing
The LAYCOTE™ Automated Coating System provides a new level of coating accuracy for a stand-alone coating system or for coating (impregnating) in an automated blending system. The unique  more...
John Deere
The DN345 Drawn Dry Spreader can carry more than 12 tons of fertilizer and 17.5 tons of lime. Designed to operate at field speeds up to 20 MPH with full loads and the G4 spreader uniformly  more...
Force Unlimited
The Pro-Force is a multi-purpose spreader with a wider apron and steeper sides. Our Pro-Force has the most aggressive 30” spinner on the market, and is capable of spreading higher rates of  more...
BBI Spreaders
MagnaSpread 2 & MagnaSpread 3 — With BBI’s patented multi-bin technology, these spreaders operate multiple hoppers guided by independent, variable-rate technology. These models are built on  more...

Comments (1) Leave a comment 

e-Mail (required)


characters left

Scott City  |  June, 14, 2014 at 06:28 AM

There is no Photos 2 and 3?

Portable Conveyors

Convey-all portable conveyors are designed to handle your crops gently and efficiently. We offer an extensive line of high capacity ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form