THE EFFICIENCY OF TANK MIXTURES OF PESTICIDES AND AGROCHEMICALS IN INTEGRATED PROTECTION OF WINTER WHEAT FROM HARMFUL ORGANISMS
In the conditions of the forest-steppe of the Central Chernozem Region the authors studied the effect of the use of tank mixtures of pesticides and agrochemicals on changes in plant health status and yield of winter wheat of the Moskovskaya 56 variety. Studies were conducted in 2015-2017 in the fields of IP K(F)KH Ulyanich V.A. in Usmansky district of Lipetsk Oblast. The biological efficiency of tank mixture of Kinto-Duo SC + Tiara SC (350 g/L) preparations in the treatment of seeds was 100% against phytophages, and 92-97% against phytopathogens. Spraying of winter wheat plants with the tank mixture of Fastac EC (100 g/L) + Prima SE + Stimunol preparations in the tillering phase after spring regrowth of the crop provided 100% efficiency against the sunn pest, barley flea beetle and cereal leaf beetle. The efficiency of this mixture against weeds was within the range of 83-95%. Spraying of plants in the flag leaf phase with the tank mixture of Clothiamet WG (500 g/kg) + Abacus SE + Carbamide preparations reduced the number of English grain aphids, wheat thripses and sunn pest larvae by 100%, and also retarded the development of brown rust and septoriosis by 89-97%. The efficiency of tank mixture of Eforia CS + Carbamide preparations against the wheat chafer was 100%. The amount of crop yield preserved by application of tank mixtures of pesticides and agrochemicals was 7.9 c/ha. The technology of producing winter wheat grain using tank mixtures of plant protection products and agrochemicals reduces the cost of production and increases the level of profitability compared to control. According to the average data over three years, in the variant with tank mixtures 1 ruble of expenses yielded 413 rubles of net profit, while the production costs were equal to 389.9 rubles/c (compared to 391.5 and 406.9 rubles/c, respectively, in the control variant).