Managing WCR resistance to Bt on the fringe

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

By now you must have heard that for a few years corn growers in large portions of the Midwest have been battling populations of western corn rootworm that are resistant to YieldGard varieties of Bt corn (varieties carrying the Cry3Bb1 toxin). This problem is serious and growers in affected areas are trying any means necessary to protect their crops. (Here is a radio report that encapsulates the challenges growers face).

Populations of rootworms resistant to Bt technology are of course relevant for Pennsylvania, where we have plenty of farmers growing corn continuously. I trust you will agree with me that we want to do all we can to avoid having resistant beetle populations develop here at the eastern end of the Corn Belt. To this end, a group of extension entomologists in Indiana, Michigan, Ohio, Ontario, and Pennsylvania have developed a set of recommendations for managing populations of western corn rootworm on what we are calling “the fringe,” which contrasts with the focal area where resistance is already widespread. This issue is particularly relevant this time of year when western corn rootworm adults are emerging across Pennsylvania and any root damage will become evident as summer thunderstorms lead to lodged corn plants.

To read more about this issue and our consensus management recommendations, visit this new fact sheet.

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 

e-Mail (required)


characters left

Kinze 1500 Grain Cart

The Kinze 1500 Grain Cart is engineered for speed and reliability required of custom harvesters. Load up to 1500 bushels ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form