BIOLOGICAL EFFICACY OF FUNGICIDES AGAINST POWDERYMILDEW DISEASE OF WHEAT

Abstract

This article presents the biological efficacy of biological preparations used against powdery mildew in wheat crops; the research was conducted at the "Temirqadam Ilhomov Sanjarbek" farm in the Kibray district of the Tashkent region during 2023–2025. The preparations used against powdery mildew demonstrated varying levels of efficacy. In the control variant (untreated), the disease prevalence was 68.4%, while the disease development rate was 39.7%. According to the test results, biological efficacy ranging from 64.5% to 82.3% was recorded when Mildown (2.0% SC) and Bactivipe (2.0% SC) were applied at rates of 1.0–2.0 L/ha.