Defoliation Research on Pima Cotton at the Maricopa Agricultural Center in 1990

Abstract

A field study was conducted at the Maricopa Agricultural Center to evaluate the effectiveness of selected defoliant treatments on Pima cotton under warm and cool weather conditions. Dropp was effective as a one application defoliant in September when air temperatures were in the high 90's. In October, when night temperatures were lower, no defoliant tested was effective in a single application.