Markovska O. Scientific substantiation of agroecological and technological measures in crop rotations on irrigated lands of the Southern Steppe of Ukraine

The object of research is the process of scientific substantiation of agroecological and technological measures in crop rotations on irrigated lands of the Southern Steppe of Ukraine. The purpose of the research is the development and scientific substantiation of agroecological and technological measures in crop rotations on the irrigated lands of the Southern Steppe of Ukraine to ensure their fertility, increase productivity of agricultural crops, economic and energy efficiency. Research methods - field, laboratory, analytical, statistical, computational, comparative-computational, dispersion, correlation, regression and variational analyzes. Research results - For the theory: For the first time, for the conditions of the southern steppe of Ukraine, based on the results of the generalization of many years of scientific research conducted in stationary experiments under conditions of prolonged irrigation of dark chestnut medium sosil soil, scientific directions of optimization of technologies of growing crops for short-term crop rotation under irrigation conditions have been scientifically substantiated. The influence of prolonged irrigation and a combination of different methods, techniques, depth and energy intensity of the systems of basic cultivation of soil, organo-mineral fertilizer systems using the leaf mass of crop rotation crops on formation of water and nutrient regimes of the soil, phytosanitary state of crops, productivity of agricultural crops and productivity of short rotation crop rotation are determined. . For the practice: Based on the results of generalization of long-term field, laboratory and analytical studies for preservation and improvement of soil fertility, reduction of irrigation water consumption, obtaining high, stable and economically profitable crops of investigated crops, optimal selection of crops in short-rotation crop rotation with the use of biologically optimal irrigation regimes, differentiated the system of basic soil cultivation on the background of organo-mineral fertilizer system with the combined use of leaf mass and all crops, mineral fertilizers and inoculants. Sphere of use - agricultural enterprises of the south of Ukraine.