Abstract

Plant protection products are currently the main part of crop cultivation technologies not only in the Krasnoyarsk territory, but also around the world. The most promising way to protect plants from pests is an integrated system that involves the use of chemical control agents only in cases where the pest population exceeds the economic threshold, and the effectiveness increase of natural mechanisms for regulating the number is carried out using agro-technical and biological methods of pest suppression. As a result of the conducted research, it was revealed that protective measures allowed to reduce crop losses by 10-15 %. During the study period, all pests recorded on grain crops (excluding cereal flies) did not exceed the threshold of harmfulness, but it is necessary to take into account their complex impact on the crop and especially grain pests (aphids, thrips and grain large nutmegs), which revealed themselves massively and spread more widely in grain crops. Pests of ear and grain, cereal aphids and wheat thrips exerted the greatest harmfulness in the experiment especially in the background with zero tillage.

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