Effect of Plant Residue on Herbicide Performance in No-Tillage Corn

Abstract

The effect of surface corn (Zea maysL.) plant residue on weed control with atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine] or alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide] was studied in the field and greenhouse. Plant residue did not significantly affect weed control when herbicides were applied at recommended rates but had an increased influence on control as herbicide rates were reduced. In the greenhouse, simulated rain improved the control of velvetleaf (Abutilon theophrastiMedic.) and foxtail millet [Setaria italica(L.) Beauv.].