Scout for western bean cutworm, western corn rootworm in Ohio

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

As the corn in Ohio enters the tasseling and pollination stage, there are two insects that should be watched. However, both need to be scouted before tank mixing an insecticide with a fungicide spray gives a good return.

First, the amount of western bean cutworm adults in our traps is still on the rise, although we have probably reached peak flight (we won’t know for sure until the numbers go down). This is the time period when producers will want to scout for egg masses on the upper 2-3 leaves.

Remember that economic threshold is only 5-8% of corn with egg masses. Although we have not yet had economic damage from WBC, it is still important to look for the presence of eggs before any applications should be made.

Second, growers may be seeing more western corn rootworm adults. For the past few years, we haven’t had to deal much with this pest, but we have received a fair amount of calls regarding leaf stripping and the potential for silk clipping. Both types of damage on corn are rare for Ohio.

For leaf stripping, this is usually not economic, but could be an indication of population sizes the following year.

There are a few considerations before spraying to prevent silk clipping. First–silks must still be viable, in other words have not begun to turn brown; second–5 or more beetles per silk mass must be present; third–silks are being clipped to less than 1/2 inch.

If all three of these conditions are met, control may be needed.


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 (0) Leave a comment 

Name
e-Mail (required)
Location

Comment:

characters left


Quickveyor

Made of high quality 304 stainless steel, the Quickveyor is one of the strongest trailers on the market. It’s belt ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form