Herbicide-resistant weeds are threatening the profitability and long-term sustainability of Kansas cropping systems. We are seeking input on this issue from Kansas farmers and agriculture professionals.
Please consider completing a short survey on herbicide resistant weed control. The survey will close at the end of August. Information collected will help develop innovative, cost-effective and integrated weed management practices for Kansas farmers.
Weeds that escape control by in-season management practices can cause several problems at harvest and in future growing seasons.
Herbicide-resistant grain sorghum has been a topic of conversation for several years. This article will provide an overview of weed management in these herbicide-resistant grain sorghum systems.
As of late December, grain sorghum farmers have access to IMIFLEX™ herbicide to use in igrowth® grain sorghum for the 2021 growing season. Read more about the target weeds, use rates, and rotation intervals in this article.
A six-way herbicide-resistant Palmer amaranth population was the subject of a study recently published by K-State weed scientists. Results from this study demonstrate that a single resistance mechanism can provide resistance to multiple herbicide groups.
Shattercane is a summer annual grass weed species commonly present in grain sorghum producing regions, including Kansas. Current research studies in western KS have identified 3 populations of shattercane with low-to-moderate resistance to imazamox.
Pre-emergence herbicides are critical for successful weed management in grain sorghum, especially for difficult to control species like Palmer amaranth. When pre-emergence control efforts fail, learn the best options for Palmer amaranth in sorghum fields later in the growing season.