Weed resistance is a growing concern among row crop producers. Currently, Palmer amaranth is resistant to glyphosate, ALS-inhibitors and DNA herbicides. The three effective modes of action for Palmer amaranth are glufosinate, PPO-inhibitors, and growth regulators. This survey determines the levels of Palmer amaranth resistance to these herbicides present in South Carolina soybean production. Research intends to collect Palmer amaranth seed samples across the state and conduct greenhouse herbicide screens for levels of resistance to glyphosate, glufosinate, PPO-inhibitors, ALS[1]inhibitors, 2,4-D, and dicamba. Then, efforts aim to disseminate these research results to South Carolina farmers to support decisions about managing Palmer amaranth in soybeans and all rotational crops.Key Benefactors: farmers, agronomists, extension agents
1) 4 Quarterly reports to the SC soybean board2) 1 final report to the SC soybean board3) Present soybean injury results to soybean growers at county and/or regional Extension soybean meetings January 1 through March 31, 2022.
Updated January 17, 2022:
View uploaded report
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.