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On the basis of the modeling of climate changes processes, conducted by the international team of the scientists of the Cambridge group under the aegis of the FAO UNO, further rise in the air temperature in the range from 2 to 6 o C in the period until 2100 is predicted 1 . This increase in the temperature and CO2 concentration in the air will have a direct impact on the biosphere of the Earth, including the productivity of the agro-industrial complex, the yield and quality of products of crops. Negative climate changes in the nearest future include the rise in the air temperature, strengthening of the drought effects, reduction of snow cover, disturbance of the uniformity of precipitation distribution, which in complex will lead to the intensification of erosion processes and soils degradation. Increasing drought of the climate has caused the need to change approaches to the formation of agricultural systems, especially in Southern Steppe of Ukraine. For the last 45 years, the amount of effective and positive temperatures during the vegetation period in this region has increased almost to 700 o C that has prolonged its duration by 12-14 days 2 . At the same time, it should be noted that the productivity of the plant sector, as well as of the agriculture on the whole, strongly depends on the impact of climatic factors 3 . Irrigation in the conditions of a severe deficit of natural moisture is one of the main factors of countering the negative effects of global warming and improving the productivity of the crop industry. Optimum interaction with other constituents of agriculture and complex mechanization favors to the intensive

SCIENTIFIC AND PRACTICAL ASPECTS OF THE FORMATION OF ECOLOGICALLY SAFE SYSTEMS OF IRRIGATED AGRICULTURE IN THE CONDITIONS OF THE SOUTH OF UKRAINE