Tsyren' V. 3. Substantiation of ecologically safe pesticide use during winter wheat and spring barley growing under Lesosteppe and Steppe conditions in Ukraine

3.The thesis is dedicated to substantiation of ecologically safe pesticide use during winter wheat and spring barley growing under Forest-Steppe and Steppe conditions in Ukraine. The characteristic of updated pesticide set used for pest control on winter wheat and spring barley fields on the size of dipole moment is given for the first time. Basing on which the optimal conditions for compound combination mixtures division are chosen. Methods for residue amount estimation of pyrethroid insecticides in winter wheat and spring barley plants, of ecologically safe pesticide use during winter wheat and spring barley growing under Forest-Steppe and Steppe conditions in Ukraine, the soil and water are developed. The dynamics and speed of pesticide detoxication in plants and soil in different soil and climatic zones of Ukraine are studied. It has been fond out that according to the integral classification, updated pesticides have 4-5 grades of the ecological risk, i. e they belong to the group of moderately d angerous compounds. This fact must be taken into account at norming and reglamentation at the usage of pesticides.