[Various principles of the formation of toxic gaseous pesticide degradation products in the soil].

The intensity of gaseous products of pesticides degradation in soil depends on the natural and antropogenic factors: type of soil, hydrothermal conditions, dose of the pesticide, presence in soil of other agrochemicals which can inhibit and also potentiate this process. The optimal conditions for the formation of volatile products of decay of chlororganic pesticides are created in dark chestnut and gray soils, derivatives of carbamine acids--in dark grey soil at humidity of 60-80% from the complete moisture capacity. Mineral fertilizers--ammoniacal nitrate and ammoniacal water, herbicides ronite and betanol--potentiate the decay of chlororganic pesticides, which can be used in the development of measures on soil purification from persistent pesticides.