Persistence of bromoxynil in three soil types

Abstract

AbstractThe persistence of bromoxynil octanoate has been studied in clay loam, fen peat and sand soils. Application of the herbicide at 1.12 kg/ha (16 oz/acre) active ingredient, as the octanoate, produced mean initial residues of 0.91,0.53 and 0.35 mg/ litre in the clay, peat and sand respectively, but declined to below the level of detection, 0.11, 0.09 and 0.14 mg/litre in the clay, peat and sand after 28, 44 and 14 days respectively. The rate of decline was inversely related to the sum of the organic matter and clay components of the soils.