Evaluation of Conventional Fungicides and Biofungicides for Managing Fusarium Wilt of Lettuce in Arizona, 2020

Fusarium wilt of lettuce, caused by Fusarium oxysporum f. sp. lactucae, is a significant disease impacting lettuce production worldwide. Symptoms include leaf yellowing, stunting, wilting, vascular discoloration, and plant death. This report evaluates the efficacy of Miravis Prime, SP2700, and Bio-Tam at controlling Fusarium wilt of lettuce. This trial was conducted in 2020 on three lettuce cultivars Lactuca sativa ‘Desert Eagle’, ‘Tamarack’, and ‘El Guapo’. Findings will provide more disease management options to control Fusarium wilt on lettuce.