Recent reports from Bayer and Corteva indicate the emergence of suspected herbicide-resistant waterhemp populations in Iowa.
Bayer reported dicamba-resistant waterhemp, while Corteva identified a suspected 2, 4-D-resistant population. An Extension Field Specialist with Iowa State University Extension and Outreach emphasized the need for further studies to confirm that.
“Well, suspected population. So that’s always— it’s kind of an intensive process to go through to prove that a population is surviving 2,4-D at an unexpectedly high rate compared with like what a natural population out in the environment might do. And so they— I believe they’ve gone through one round of testing and they’ll do one more this spring. And so, if it survives like they think it has been. Right. If it’s proven to be resistant, then they should be able to do that yet this summer,” according to Meaghan Anderson.
She highlighted the significance of these findings, cautioning against over-reliance on herbicides like 2, 4-D. She stresses the importance of implementing comprehensive weed management programs to slow the evolution of resistance while effectively controlling waterhemp.
Produce markets are in transition as fall approaches, with leafy greens and berries under pressure, while vegetables like celery, broccoli, and cauliflower are finding firmer ground.
September 17, 2025 04:07 PM
·
Grain shippers face lower freight values thanks to weak soybean exports and strong rail service, but barge traffic and forward Gulf loadings suggest continued uncertainty as harvest ramps up.
September 17, 2025 04:01 PM
·
The Fertilizer Research Act, reintroduced by Sens. Grassley, Ernst, and Baldwin, would direct the USDA to study and publish public reports on competition and pricing trends in the fertilizer market.
September 16, 2025 05:08 PM
·
Allowing year-round sales of E15 nationally could deliver billions in economic gains, according to a new study from the Renewable Fuels Association and National Corn Growers Association.
September 16, 2025 02:29 PM
·
Farmers await concrete trade commitments from China. Until then, export prospects for soybeans, corn, and sorghum remain uncertain against strong South American competition.
September 16, 2025 11:04 AM
·
U.S. Secretary of Agriculture Brooke L. Rollins today issued a new memorandum to modernize and strengthen America’s wildfire prevention and response system.
September 15, 2025 04:56 PM
·
