Aim and ET APRES

— Written By

Peanut Response to Aim and ET Applied as Harvest Aides.

M.D. INMAN*, D.L. JORDAN, and P.D. JOHNSON, North Carolina State University, Raleigh, NC 27695.

Research was conducted from 2012-2014 to determine peanut and weed response to the herbicides Aim (carfentrazone ethyl) and ET (pyraflufen ethyl) applied at 1 or 2 oz formulated product/acre at 1 or 2 weeks prior to digging peanut pods and inverting vines. Peanut injury was higher when these herbicides were applied at 2 oz/acre compared with injury from 1 oz/acre. Injury caused by ET was higher than injury caused by Aim. However, yield was not affected by these herbicides regardless of rate applied or time between application and digging pods and inverting vines. In studies with weeds present, Aim desiccated morningglory but had a minimal impact on common lambsquarters, common ragweed, eclipta, and spurge compared with non-treated peanut. Although not compared directly in these experiments, greater injury was observed when herbicides were applied when temperature was higher. Results from these experiments suggest that Aim and ET can be applied to desiccate morning glories without injuring peanut enough to adversely affect peanut yield when applied 1 or 2 weeks prior to digging.

Article first appeared as North Carolina Peanut Note (PNNC-2015-018)