Dr. Dallas Peterson

(Conrad) Good morning and welcome to Farm Factor on AGam in Kansas. I’m your host, Conrad Kabus. The Kansas Soybean Expo was held January 7th in Topeka, Kansas. Many farmers and industry partners attended. Take a look. The Kansas Soybean Expo has a diverse role in farmer’s operation and presents many opportunities, some from a research standpoint. Participants were able to attend two of three K-State Research and Extension breakout sessions. Dallas Peterson, PhD, Weed Science Specialist presented on, “Future Weed Control Technologies.” in Soybeans.” (Dallas) Hi, I’m Dallas Peterson, Extension Weed Specialist at Kansas State University. And so I do research and extension on weed control related issues. Here at the Soybean Expo today, I’m going to be visiting about new weed control technologies that are coming down the pipeline to assist farmers with managing some of the glyphosate resistant weed issues that have developed in recent years. The three primary new technologies that I will be visiting about include 2,4-D resistant soybeans which are being developed by the Dow Chemical Company. And those are referred to as Enlist Soybeans. Dicamba resistant soybeans which are being developed by the Monsanto Company. And those are being referred to as Extend Soybeans. And finally HPPD resistant which are being developed jointly by both Syngenta and the Bayer Chemical Company, which will allow farmers to use the HPPD class of herbicides to assist with weed control once those do get introduced. (Conrad) Resistance to glyphosate a widely used herbicide that’s often sold under the brand name Roundup continues to grow in the Midwest. Water hemp, kochia and rag weed are among the weeds developing resistance. And controlling weeds, other than long term, it’s important to keep in mind that herbicides kill in different ways. (Dallas) Glyphosate resistant weed problems have developed gradually over the last seven or eight years. And we now have six different species in Kansas with confirmed resistance to glyphosate. Over the years, in recent years many farmers have relied almost exclusively on glyphosate for weed control. That probably was not the right approach because of that heavy reliance on glyphosate. Unfortunately we have developed resistance issues to these weeds. And so now growers definitely need to diversity their weed control program and the new technologies that are coming forward will provide some new options or some new tools to allow them to do that. (Conrad) Through research scientists have found no matter what farmers do, weeds will develop resistance to glyphosate. As crop prices have slumped and profit margins narrow, farmers are tempted to use the least expensive ways of controlling weeds, even if those methods aren’t the best for combating herbicide resistance long term. Farmers should visit with an agronomist or chemical specialist to identify the right approach. (Dallas) Every year we are evaluating the various technologies that are available to help manage weeds in our soybean crops and specifically again, over recent years, we have been working with the Enlist, the Extend as well as the HPPD resistant technologies and looking at the herbicide options, the various programs that could be included that include both pre-emergence type programs as well as post-emergence applications to give a more diversified weed control programs and hopefully improve control of weeds overall and especially those that have developed resistance to the various herbicides.

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