Evaluation of peanut tolerance to mid-season applications of PPO-Inhibitor herbicides mixed with different surfactants

A systematic review of chemical weed management in peanut (Arachis hypogaea) in the United States: challenges and opportunities

“…Carfentrazone is used to control Ipomoea species in peanut (Grichar et al 2021; Kharel et al 2022), but only as a burndown treatment before planting (Anonymous 2008; Grichar et al 2010). Carfentrazone has been shown to cause stunting and peanut injury ranging from 7% to 62% and significant yield reduction in various studies (Chaudhari et al 2017; Dotray et al 2010, Grichar et al 2010, 2021; Kharel et al 2022; Price et al 2021). Injury from carfentrazone can be substantially greater than injury from lactofen and paraquat plus bentazon, which is often considered as unacceptable by peanut growers (Dotray et al 2010; Grichar et al 2010).…”

“…Injury from carfentrazone at these application rates and timings resulted in as much as 22% reduction in peanut yield, but peanut grade characteristics were not affected (Grichar et al 2010). Yield losses up 27% were observed with carfentrazone-ethyl plus a high surfactant oil concentrate at 75 and 90 d after planting as compared with the nontreated check (Price et al 2021). Similarly, carfentrazone application during the pod-filling stage (4 wk before digging) caused 10% reduction in peanut yield, whereas yield was not affected when applied at 1 or 2 wk before digging (Chaudhari et al 2017).…”