Control of Hophornbeam Copperleaf (Acalypha ostryfolia Riddell) and Ivyleaf Morningglory (Ipomoea hederacea L. Jacq.) in Peanut (Arachis hypogaea L.)

Abstract

Copperleaf control in peanut was difficult to obtain with either soil-applied or postemergence herbicides. Control was most consistent with RH-1658 or Dual plus Cobra applied at peanut emergence and followed by Cobra postemergence. Cobra applied postemergence controlled ≥98% copperleaf while Cadre control was inconsistent. The lack of consistent control with Cadre may be due to the size of copperleaf (4 to 6 inches tall) at the time of herbicide application. Ivyleaf morningglory control with soil applied herbicides was most consistent with Sonalan plus Pursuit applied preplant incorporated. Butyrac and Cadre applied postemergence controlled ≥90% ivyleaf morningglory while Blazer, Pursuit, and Storm controlled >80% ivyleaf morningglory. Tough control of morningglory was inconsistent.