Tag Archives: resistance management

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 »

Start Clean, Stay Clean

weeds

Planting into a weed-free field, applying residual herbicides and knocking back that first weed flush reduces competition and yield loss. • By Amanda Huber • A big part of getting the crop off to a good start is managing weeds. The key is planting into a clean field and then applying preemergence herbicides as quickly as possible behind the planter. ... Read More »

Proactive herbicide resistance management

palmer pigweed

A proactive approach using diverse weed-control tactics is the most effective way to manage herbicide resistance. Early detection leads to easier management and decreases the potential spread of the resistant biotype. Unfortunately, because resistant plants and susceptible plants look alike, resistance often is not detected until the resistant biotype has spread to 30% or more of the field and perhaps ... Read More »

Late, But Ever Present

peanut disease

Foliar disease has shifted from early to late leaf spot, and fungicide shortages will mean a change in management plans.  • By Amanda Huber  • Climate conditions, coupled with continued shorter rotations, put peanuts square in the cross hairs significant for leaf spot disease in 2017. Read More »