Timoshchuk T. Agroecological substantiation of the nature-oriented system of winter wheat seed crops protection from diseases in Ukrainian Polissya.

The test object is the phytosanitary state of winter wheat agrocenoses, their productivity and substantiation of the nature-oriented protection system. The aim is to develop the nature-oriented system of winter wheat seed crops protection for obtaining sustained yields of high-quality seeds with the simultaneous reduction of anthropogenic pressure on agroecosystem under the conditions of Ukrainian Polissya. The methods used are field, laboratory, calculation and statistical ones. Theoretical results - the influence of ecological factors and elements of cultivation technology on agroecological state and productivity of winter wheat seed crops has been studied. Practical results - proposals to production as to the formation of ecologically balanced agroecosystems have been formulated. The novelty - optimal elements of intensive technologies of winter wheat seed crops growing under the conditions of Polissya have been determined, and the nature-oriented system of the crop protection against diseases has been developed.