Rudska N. Ecological substantiation of protection of seeds of alfalfa seed from pests of generative organs in the Right-bank Forest-steppe of Ukraine

In the dissertation the entomocomplex (phytophagous, entomophagous, pollinators) of seedlings of alfalfa of the Pravoberezhny Forest-steppe of Ukraine has been specified. The object of the study is alfalfa crop, pests of generative organs and seeds (alfalfa alfalfa flower bulb, alfalfa alfalfa), varieties and samples of the collection, modern insecticides. Methods: field, laboratory-field, mathematical-statistical, design. It has been established that among the 48 phytophagus, the most dangerous pests of the generative organs are the gazelle of Contariniamedicaginis and Bruchophagus roddi. The peculiarities of the biology of these phytophagous species, the dynamics of their number depending on hydrothermal conditions are determined. The evaluation of the stability of 21 varieties of alfalfa seedlings Contarinia medicaginis and Bruchophagus roddi. The influence of agrotechnical methods of cultivating the culture (lines, methods and subcrops) on the number and harmfulness of the dominant species of phytophagus has been studied. The efficiency of application of chemical drugs against dangerous species of arthropods and their effect on insect-pollinators is substantiated. The ecologically integrated system of control of harmful phytophages of the generative organs is substantiated. The economic efficiency of chemical measures of protection of alfalfa from Contarinia medicaginis and Bruchophagusroddi