Weed Management with Flumioxazin in Strip-Tillage Peanut (Arachis Hypogaea)1

Abstract

Abstract Three experiments were conducted at Lewiston-Woodville, NC in 1999 and 2000 to evaluate weed management systems in strip-tillage peanut. Using a factorial treatment arrangement, flumioxazin was evaluated with standard preemergence (PRE), early postemergence (EPOST), and postemergence (POST) herbicides. Dimethenamid PRE controlled common lambsquarters 77%, eclipta 32 to 100%, prickly sida 14%, and entireleaf, ivyleaf, and pitted morningglory no more than 23%. The addition of flumioxazin PRE to dimethenamid controlled common lambsquarters 97%, eclipta 57 to 100%, prickly sida 79%, and morningglory species 44 to 100%. Common lambsquarters, eclipta, prickly sida, yellow nutsedge, and entireleaf, ivyleaf, and pitted morningglory were controlled at least 96% with dimethenamid plus flumioxazin PRE followed by (fb) paraquat plus bentazon EPOST fb imazapic POST. Peanut injury from dimethenamid PRE alone or in PRE tank mixture with flumioxazin ranged from 0 to 60%, but did not significantly affect yield. S...