Trials with CMU weedicides in Queensland pineapple plantations

Abstract

Trials were carried out in southern Queensland durinq 1954-1956 to evaluate parachlorophenyl dimethyl urea (CMU) as a weedicide in pineapple plantations, using sodium pentachlorphenate (PCP) as a standard for comparison. Consistently better control of weeds was obtained with CMU at 4 lb. per acre than with PCP at 10 lb. per acre. No phytotoxic effects were detectable in pineapples sprayed with CMU at rates up to 8 lb. per acre.