Tag Archives: palmer amaranth

UGA researchers confirm PPO-resistant Palmer pigweed

ppo resistant pigweed trials

• 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 »