The use of plant growth regulators to increase the effectiveness of fungicides in soybean crops

Abstract

The article presents the results of studies evaluating the combined use of fungicides and growth regulators to increase the biological effectiveness of chemical treatments against fungal diseases on soybean crops in the Non-Chernozem zone of the Russian Federation in 2024. The research was conducted in Moscow, on the territory of the Educational and Experimental Farm in the period 2023-2024 on soybean crops of the varieties SK Alta and Svetlaya. Fungicides were used in the experiments: Cobalt, KME (400 g/l propiconazole), Intrada, SK (250 g/l azoxystrobin), and plant growth regulators - agrostimules, VE (50 g/l dihydroquercitin), Novosil, VE (100 g/l triterpene acids). Options were laid out, both with joint and separate use of pesticides and growth regulators. The results of the study showed that the use of fungicides Cobalt, KME and Intrada, SK together with growth regulators of Agrostimules, VE and Novosil, VE influenced the increase in biological efficiency in the fight against alternariasis and cercosporosis on soybean varieties SK Alta and Svetaya. The separate use of growth regulators increased the resistance of plants to fungal pathogens.