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palmer pigweed

UGA researchers confirm PPO-resistant Palmer pigweed

georgia PPO herbicide trial

• By Stanley Culpepper and Taylor Randell • Research over the past three seasons has confirmed a Georgia population of Palmer amaranth to be resistant to topical applications of PPO herbicides including Reflex, Cobra and Blazer (Figure 1). For cotton and peanut farmers, the question on everyone’s mind is if the residual activity of Valor and Reflex will still control ... Read More »

Texas Caprock Crop Production Conference set for April 1

palmer pigweed in texas cotton

The Caprock Crop Production Conference for Crosby and Floyd counties is set for April 1 in Floyd County. The Texas A&M AgriLife Extension Service event will take place at the Floyd County Friends Unity Center, 990 Farm-to-Market Road 786 in Muncy. The cost is $45. Advanced registration is requested by March 25 for this in-person meeting so all COVID-related precautions ... Read More »

Stewardship grows more important with dicamba-resistant pigweed

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 dicamba-resistant (DR) Palmer amaranth. These DR populations are established in Crockett, Gibson, Madison, Shelby and Warren counties and likely several ... Read More »

Recent pigweed escapes are troubling

pigweed sprayed with liberty

• 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 glufosinate or Liberty. I have received several pictures of pigweed escapes following two or three Liberty applications in Northeast Arkansas. ... Read More »

Research Benefits Southern Plains Cotton

Despite the COVID-19 pandemic, Cotton Incorporated leaders and scientists continue to advance the crucial agricultural and environmental research for which they are responsible. Cotton Incorporated’s Agricultural and Environmental Research Department has taken a steadfast approach to managing ongoing research projects and priorities through these challenging times. Along with university and U.S. Department of Agriculture research partners, the AERD team at ... Read More »

Extension hears concerns about poor Palmer amaranth control with dicamba

palmer pigweed

• 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 (Example right). In visiting with farmers, consultants and retailers it is interesting to note that some are seeing relatively good ... Read More »