Managing Weeds With PP, PPI and Pre Herbicides By Emi Kimura, James Grichar, Pete Dotray and Josh McGinty, Texas A&M AgriLife Extension
B
est management practices for peanut production include effective season-long weed management. The four weed management principles in peanut production are: 1. Start clean. 2. Use residual herbicides. 3. Be timely with postemergence applications. 4. Know your weeds. Early season weed management is most important and should result in easier weed control later in the season. There are five critical herbicide application timings in peanut production. These application timings include preplant burndown, preplant incorporated, preemergence, early postemergence and
postemergence. Yield losses are minimized when peanuts are free of weed competition for the first four to six weeks after planting. The use of PP, PPI and Pre herbicides are critically important for minimizing weed competition during the early season. April is a good time for planning and applying PP and PPI herbicides in your peanut fields while Pre herbicide applications are made at planting. Early post timing is 10 to 20 days after planting, with postemergence 20 to 45 days after planting. Preplant Burndown Early emerging weeds, such as Russian thistle and kochia, can be controlled by tillage or use of burndown herbicides.
Preplant and preemergence herbicides are a good start to reducing weed competition and yield loss.
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THE PEANUT GROWER • MARCH 2020
PEANUTGROWER.COM
