Evaluation of the effectiveness of potato protection products against rhizoctoniosis

Abstract

The article presents the results of the study of chemical and biological preparations for the preplanting etching of potato tubers from pathogens of soil diseases. In field experiments, the fungicides Maxim (etalon), Prestige, Quadris, Emesto Quantum, Celest Top, Vitaplan and Phytosporin-M biopreparations were tested. Among them, the chemical preparations Emesto Quantum and Quadris had the greatest effectiveness against rhizoctoniosis (Rhizoctonia solani J.G. Kuhn). In the germination phase, they provided the smallest outbursts of mother tubers by 11.7 and 10.9 % relative to Maxim, increased yields by 8.7 and 9.1 % and the yield of healthy products by 8.1–11.5 %. The use of the Phytosporin-M biopreparation had a positive effect only on reducing the death of planting material by 12.9 % and plants during the growing season by 1.4 % compared to the standard. The analysis of economic data showed that when using chemical mordants, the additional income was 149.9–154.5 thousand rub./ha, the cost recovery was 4.4–6.1 rub./rub.