2019
Management of herbicide-resistant waterhemp with new herbicide technologies
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Contributor/Checkoff:
Michigan Soybean Promotion Committee
Category:
Sustainable Production
Keywords:
AgricultureCrop protectionHerbicide
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Christy Sprague, Michigan State University
Co-Principal Investigators:
Project Code:
1918
Contributing Organization (Checkoff):
Michigan Soybean Promotion Committee
$27,731
Institution Funded:
Michigan State University
$27,731
Brief Project Summary:

Waterhemp is quickly becoming the #1 weed concern for Michigan soybean farmers. Over the past several years more and more populations of waterhemp have been identified and continue to spread throughout Michigan. Currently, a majority of the waterhemp populations identified in Michigan are resistant to two herbicide sites of action, glyphosate (Group 9) and the ALS-inhibiting herbicides (Group 2). As waterhemp problems continue to spread throughout Michigan and resistance issues increase, new herbicide-resistant soybean technologies will be needed for effective control. LibertyLink GT27 and XtendFlex soybean are two new soybean technologies that will provide farmers with new potential options...

Unique Keywords:
#weed control
Information And Results
Final Project Results

On September 17, 2019, there was a field day held at this location where approximately 25 farmers and Ag retailers attended. We would like to thank MSPC and Paul Gross for hosting this field day. The information was valuable for farmers in this area to learn more about waterhemp management strategies. The results from these soybean trials were critical to updating the “Multiple-resistant Palmer amaranth and waterhemp in Michigan: Keys to management”, factsheet that is in the 2020 MSU Weed Control Guide for Field Crops and posted on www.MSUWeeds.com. Results from these trials have also been presented at several winter extension meetings. This research has been important to provide effective information to soybean growers to help manage this troublesome economically significant weed problem. It will also provide additional control strategies and herbicide options to aid in the management of a weed that has the ability to develop resistance to multiple-herbicide sites of action.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.