COTTON SHOVEL IS ACTUAL IN TOMATO CROPS

In Kabardino-Balkaria, in some years high numbers of cotton scoops are revealed. The loss of tomato yield from this type of scoop reaches up to 30 %. A phytosanitary monitoring of the density dynamics of caterpillars in tomato crops was carried out every year. The value of the saved yield (t / ha), biological (%) and economic efficiency (RUB / ha) of tested insecticides and their mixtures with agrochemicals and growth regulators were determined. The results of scientific and industrial experience show that the application of new generation biological and chemical insecticides along with phytosanitary recovery (low rate of consumption, selective and prolonged action) and stabilization of agrocenoses ensure high and economic efficiency in tomato crops. Based on the analysis of the dynamics of the number of caterpillars of the second generation of a cotton scoop in the foothill zone, the periodicity of the maximum severity was revealed, corresponding to 4-5 years, with their subsequent decline in other years. In a comparative evaluation, new generation of insecticides such as Proklam, VRG were isolated; Avant, CE and Koragen, CS, which have high rates of biological efficiency (up to 96 %). New elements have been developed in the system of integrated protection of open ground tomato crops in the fight against cobweb caterpillars, which allows reducing the number of treatments and thereby reducing the pesticide load on the environment, which will help preserve the entomofauna and obtain biologically safer tomato fruit. An improved system of integrated protection of tomatoes from cotton scoops can be recommended to vegetable farms in the South of Russia with appropriate soil and climatic conditions.

tomato, maize, cotton scoop, crop rotation, phytosanitary situation, population dynamics, insecticides growth regulators, agrochemicals, biological effectiveness, economic efficiency

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