Abstract
The species composition of weeds and pests in the crops of spring rape of the variety Nadezhny 92 was determined, the technical effectiveness of the protection scheme of the Syngenta company was evaluated. The results of the study showed that the prevailing species were cereal weeds of 17.9 units / m2. Dicotyledonous weeds amounted to 13.6 units / m2. A decrease in the moisture supply of the vegetation period entailed an increase in weediness. The highest weediness was recorded in 2019, when the number of weeds was higher than in 2017 and in 2018 on 23.5 - 18.0 pcs / m2. Of the pests, cruciferous fleas, rapeseed beetle, rape sawfly, and caterpillars of cabbage were found in the crop. Spring rape protection scheme: presowing treatment with Cruiser Rapeseed, KS, Zellek Super, KE Galera Super, BP, Karate Zeon, MKS showed high technical efficiency. Technical efficiency against cereal weeds was 84.4%, against dicotyledons - 90.4%. On average, the protection effect on spring rape crops was 86.3%. The use of an insecticide allowed reducing the number of pests in crops below the economic threshold of harmfulness or completely destroying them.
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