Insecticide Resistance Management for Beet Armyworm and Diamondback Moth in Desert Produce Crops

Abstract

This guide provides best practices for insecticide resistance management (IRM) targeting beet armyworm and diamondback moth in desert leafy and Brassica vegetable crops. It offers insecticide efficacy rankings and crop stage recommendations based on local field data, emphasizing the importance of rotating insecticide modes of action (MOA) to prevent resistance. Specific guidance is provided for Diamide use (IRAC Group 28), including soil and foliar application timing, product rotation, and crop proximity considerations. The document supports sustainable IRM by promoting responsible application frequency, product selection, and adherence to University of Arizona action thresholds.