Biopesticide Efficacy in Desert Produce Crops

Abstract

This publication presents results from small plot field trials conducted in Arizona’s desert vegetable production systems to evaluate the efficacy of biopesticides commonly used in organic leafy greens. Trials targeted major insect pests including beet armyworm, cabbage looper, diamondback moth, green peach aphid, and western flower thrips. Products were assessed using standardized spray intervals, and both knockdown and residual effects were measured. Results are summarized in an easy-to-interpret Relative Efficacy Index (REI), offering growers and PCAs a comparative tool to optimize pest management decisions in organic systems under desert growing conditions.