Monday, August 24, 2026

dicamba

Stewardship grows more important with dicamba-resistant pigweed

• By Larry Steckel • Has Palmer amaranth evolved dicamba resistance in Tennessee? Results from some of the greenhouse experiments this winter and spring as well as in field research this growing season would suggest that our state now has...

Recent pigweed escapes are troubling

• By Tom Barber • Over the last couple weeks I have had several conversations with consultants and growers about pigweed control. Many are concerned with the levels of postemergence control they are seeing in all technologies but especially with...

Registrants ask for rehearing of Ninth Circuit’s June 3 dicamba decision

UPDATED — BASF, Bayer and Corteva Agriscience filed separate petitions July 20 with the U.S. Court of Appeals for the Ninth Circuit requesting a rehearing of its June 3 decision. The court's ruling vacated Environmental Protection Agency registrations for...

Junglerice control after initial glyphosate + dicamba application

• By Clay Perkins • Questions continue to be asked on how to best manage junglerice, barnyardgrass and goosegrass in cotton and soybean. Research earlier this spring looking at grass control after an initial glyphosate + dicamba application showed that if...

Extension hears concerns about poor Palmer amaranth control with dicamba

• By Larry Steckel and Clay Perkins • Calls continue to come in on concerns about poor Palmer amaranth control after a dicamba application. More than a few have reported that Palmer amaranth has survived multiple dicamba + glyphosate applications...

Ninth Court upholds EPA’s dicamba use-of-stocks decision

UPDATED — The U.S. Court of Appeals for the Ninth District has backed the Environmental Protection Agency's decision to allow continued use of three dicamba products until July 31. In rejecting an emergency motion brought by environmental groups, the...

June 24 webinar looks at dicamba ruling, EPA cancellation order

A federal appeals court ruling that prompted the Environmental Protection Agency’s cancellation of three dicamba-based herbicides has not only drawn new attention, but also is raising questions about use of existing stock. The National Agricultural Law Center will host a...

Here’s a ‘Plan B’ for Palmer pigweed escapes after dicamba, 2,4-D

• By Larry Steckel • Some reports have come from folks concerned by the lack of Palmer amaranth response to applications of dicamba plus glyphosate applied in the last 10 days. I expect to get more of these calls as...

BASF, Corteva file motions to intervene in 9th Circuit dicamba case

UPDATED — BASF and Corteva Agriscience have filed emergency motions to intervene following the decision by the U.S. Court of Appeals for the Ninth Circuit to vacate federal registrations of three dicamba-based herbicides. If approved, the motions would allow the...

Environmental groups seek immediate halt to dicamba spraying

The same environmental groups that successfully filed a suit in the Ninth Circuit Court of Appeals to vacate registrations for three dicamba products have since asked the court to find the Environmental Protection Agency administrator in contempt. They filed an...

Texas cotton farmers try to adjust in wake of dicamba court ruling

• By Kay Ledbetter • The Texas A&M AgriLife Extension Service stands ready to advise producers on agronomic alternatives and options in the wake of a June 3 ruling from the U.S Court of Appeals for the Ninth Circuit to...

Texas ag commissioner to seek Section 18 for 3 dicamba products

Texas Agriculture Commissioner Sid Miller plans to request a Section 18 from the Environmental Protection Agency to allow the continued use of dicamba in Texas under emergency conditions despite last week's court ruling. "The Texas cotton crop is going in...

SC farmers lose use of important herbicides early in the season

One of the most widespread and effective herbicides in South Carolina farmers' arsenal has been barred from sale early in the growing season. Officials with the Department of Pesticide Regulation, a state regulatory agency based at Clemson University, South Carolina,...

How a California court ruling affects Alabama cotton farmers

Alabama producers with dicamba-tolerant crops in the ground are struggling to come to terms with a constantly changing situation surrounding a California Circuit Court ruling. California’s Ninth Circuit Court of Appeals issued a dicamba ban effective immediately for XtendiMax,...

UGA’s Stanley Culpepper offers thoughts on dicamba

University of Georgia Extension weed specialist Stanley Culpepper provides a few thoughts on recent court actions surrounding the registration of three low-volatility dicamba products paired with Xtend crops. Details of the order The Environmental Protection Agency’s order addresses sale, distribution, and...

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