Możliwości ochrony ogórka w uprawie pod osłonami przed mączniakiem prawdziwym dyniowatych (Podosphaera fusca) z zastosowaniem różnych środków biologicznych i chemicznych

The aim of the study was to determine the efficacy of the tested biofungicides and chemicals products in the protection of cucumber under cover against powdery mildew (Podosphaera fusca). The tested products included in their composition: COS-OGA, Bacillus subtilis strain QST 713, orange oil, metrafenone and azoxystrobin + diphenoconazole. The experiments were conducted in 2021 and 2022 at the Institute of Horticultural – National Research Institute in Skierniewice. They showed that 7 days after the last treatment, the highest efficacy in reducing the pathogen in both years of the study was demonstrated by products containing: metrafenone and azoxystrobin + diphenoconazole. Lower efficacy of control was achieved by B. subtilis strain QST 713, COS-OGA and orange oil.