PRE-emergence Herbicide Selection for Early Planted Soybeans

Nov 25, 2021

By Arriaga Atucha Broeske and Conley Dan et.al

Over the last two growing seasons (2020 and 2021), weather and soil conditions across southern Wisconsin were favorable for early soybean planting (see USDA NASS data below). Under suitable environmental conditions, planting soybean early is a recommended strategy to increase the crop’s yield potential (See Dr. Shawn Conley’s blogpost: “Just the Facts Jack: Soybean Planting Date, Seeding Rate and Seed Treatment Recommendations”).

Article Link: https://bit.ly/3C5Iq3K

Can I skip a PRE-emergence application in early planted soybeans and control weeds POST only? We recommend against that. The use of an effective PRE-emergence herbicide is the foundation for chemical weed control in soybeans. Limited effective POST-emergence herbicide options are available for control of herbicide-resistant weed species such as waterhemp and giant ragweed.

Can I delay my PRE-emergence application in early planted soybeans? Yes, one could do so by selecting herbicides with soil residual activity that can be sprayed before crop emergence instead of herbicides that must be sprayed within 3 days of crop planting, particularly when the soybean crop is being planted early in the spring, is not expected to emerge for several weeks, and weeds are not actively emerging due to low soil temperatures. Keep in mind that PRE-emergence herbicides are effective if timely incorporated (by light tillage and/or precipitation) and active in top soil solution as weeds germinate and emerge.

With all that in mind, we developed the following handy table displaying the application window of commonly used herbicides with soil residual activity in soybean cropping systems.

Click to find the handy table developed by Arneson et al.: “Application Window for Soybean Herbicides with Soil Residual Activity”.

Source : wisc.edu

Video: Agriculture Secretary Rollins Speaks at American Farm Bureau Federation Convention in Anaheim

One of the highlights at the 2026 American Farm Bureau Federation Convention in Anaheim, California, was an address by U.S. Secretary of Agriculture Brooke Rollins. During her remarks, she thanked America’s farmers and ranchers and said the Trump Administration is fully aware that food security is national security.

She also acknowledged the challenging times in Farm Country with low commodity prices and high input costs and said that’s why the President stepped in to help with the recent Bridge Assistance Program.

Montana Farm Bureau Federation Executive Vice President Scott Kulbeck says that Farm Bureau members are appreciative of the help and looks forward to working with the American Farm Bureau Federation and its presence in Washington, DC to keep farmers and ranchers in business.

Secretary Rollins said the Trump Administration is also committed to helping ranchers build back America’s cattle herd while also providing more high-quality U.S. beef at the meat case for consumers.

And she also announced more assistance for specialty crop producers who only received a fraction of the $12 billion Farmer Bridge Assistance (FBA).

It’s important to note that producers who qualify for Farmer Bridge Assistance can expect the Farm Service Agency to start issuing payments in late February. For more information, farmers and ranchers are encouraged to contact their local USDA Service Center.