Biological substantiation of winter grain crops protective measures against cereal leaf beetles

Abstract

In 2012–2018 the species composition of Cereal leaf beetles in agrocenoses of winter cereal crops has been clarified, the ecological and biological features of dominant species have been determined, seasonal dynamics of their abundance and harmfulness has been revealed. An assessment of the biological and economic effectiveness of insecticides from various chemical classes is given.
It is determined that from the group of winter grain crops the pest is the most numerous and harmful in triticale crops. All studied varieties of winter crops of domestic and foreign selection are populated and damaged by the phytophage larvae. The biological effectiveness of insecticides from the group of synthetic pyrethroids and neonicotinoids has made up to 76,8-100 %, what has allowed to save 0,6-10,6 % of the grain yield of winter grain crops.