Rotation, Rotation
This southern Illinois soybean field has been in continuous glyphosate-tolerant soybeans since the technology was introduced in 1996. Now, producers are dealing with an overwhelming population of waterhemp.
Rotating crops, herbicide modes of action and management tactics are key to keeping resistant weeds at bay. Crop rotation allows different weed control options to be utilized and helps reduce the chance of developing herbicide resistance. In addition, a monoculture lets specific weed species develop Crop rotation, including non-glyphosate-tolerant crops, can help ease over-reliance on glyphosate by opening up herbicide options and application timing - thus the incidence of glyphosate-resistant weeds.
While it is imperative to use herbicides with different modes of action on your crops, it is also necessary to use herbicides with different sites of action, or how the herbicide works in the plant, to help fight resistant weeds. Though glyphosate is still effective on many weeds, control can be enhanced with the addition of a herbicide with residual activity. Syngenta recommends applying a pre-emergence, residual herbicide, like Lexar® or Lumax® in corn and Prefix® in soybeans, when weeds are small and follow up with a glyphosate application to help provide weed control throughout the season.
Timely weed control is key. How has rotation been a part of your weed management program?
Important: Always read and follow label instructions before buying or using these products. Lexar and Lumax are Restricted Use Pesticides. Lexar®, Lumax®, Prefix® are registered trademarks of a Syngenta Group Company.