Abstract: One of the fundamental problems of agriculture development, so-called «short-term problem», that means a flexibility of yield and, respectively, farm incomes from year to year on the example of specific agrarian enterprise is investigated. One of the ways for elimination of this problem by implementation of irrigation system is justified. The yield indicators for the last five years are analyzed. The flexibility of main crops for winter wheat is 21,05 %, rye — 30,78 %, buckwheat — 43,40 %, corn — 27,63 %, millet — 8,55 %, sunflower — 34,02 %, soybean — 54,73 %. The flexibility of average monthly temperature of air for the same period is in diapason from 2,5 % in August to 208 % in December. Winter is much warmer in comparison with norm. December is warmer in average on 2,5 °С, January — on на 3,1 °С, February — on 2,5°C. The same tendency is also for spring — March is warmer on 4,1 °С, April — on 1.8 °С, May — on 1,7°C.

The need for water and actual deficit of water for such main crops as corn, sunflower, and winter wheat is calculated. The water deficit for corn is 18,7 %, sunflower — 16,73 %, winter wheat — 18,51 %. One of the best decisions for elimination of the water deficit is building of drops irrigation system that resolves not only this problem, but also will provide of fertilizers directly to the roots systems of the plants.

The dynamic in change of corn yield in condition of irrigation system and cumulative water and electricity spending is calculated. Average increasing of corn yield in condition of irrigation will be 5,9 ton per hectare, cumulative water spending will be 3583 m3 per hectare and 286.64 m3 per one ton of grain, electricity spending will be 1988.57 Kw per hectare and 159,09 Kw per ton of corn.