Cross-Resistance Among Demethylation Inhibitor Fungicides With Brazilian Isolates as a Foundation to Discuss Brown Rot Control in Stone Fruit.

Despite the resistance problems in , demethylation inhibitor fungicides (DMIs) are still effective for the disease management of brown rot in commercial stone fruit orchards in Brazil. This study aims to investigate the sensitivity of isolates and efficiency of DMIs to reduce brown rot. A set of 93 isolates collected from Brazilian commercial orchards were tested for their sensitivities to tebuconazole, propiconazole, prothioconazole, and myclobutanil.