Do Antimicrobial Water Sanitizers Affect Insecticide Efficacy in Desert Produce?

Abstract

In response to new food safety guidelines requiring antimicrobial sanitizers in non-potable spray water, this study assessed whether peroxyacetic acid (PAA) and sodium hypochlorite (NaClO) impact insecticide performance in desert lettuce. Through field trials and lab bioassays, researchers tested combinations of sanitizers with commonly used insecticides against key pests, including beet armyworm, cabbage looper, diamondback moth, western flower thrips, and green peach aphids. Results showed no negative effects on insecticide efficacy or residual control when sanitizers were used at recommended rates. Findings support the compatibility of water sanitization with effective pest management in leafy greens.