Economic efficiency of cultivation of maize and rice, depending on the quality of irrigated water in the Steppe

  • O. Demetyeva
Keywords: the quality of irrigated water, drainage waste effluents, the grain yield, economic efficiency, the net income, the cost of grain, the cost price of grain, the level of profitability

Abstract

The question of efficiency of maize hybrids growing of different maturity groups on the dark chestnut soils of the Institute of irrigated agriculture and the Askaniya agricultural experimental station NAAS by irrigation of different quality water was examined. In terms of Rice Research Institute has been studied the possibility of using for irrigation the drainage waste effluents by mixing them with the Dnieper water (Dnieper water ‒ 75 % + drainage waste effluents ‒ 25 %)As a result of laboratory tests the agromeliorative estimate of four types of studied irrigated water indicated the need for continuous monitoring of the quality of irrigated water of the Ingulets irrigated system. According to researches some water indicators are approached or exceeded the maximum permissible concentration, so with the need we had to use meliorants. Other three studied types of water were suitable for irrigation of crops. However, the combined effect of soil fertility, climatic conditions and the meliorant (phosphogypsum ‒ 2 t/ha) using aggressive water of the Ingulets have yielded the medium grain yield of maize hybrids (13,15‒13,64 t/ha) at the level of crop capacity obtained in terms of the Askaniya agricultural experimental station (13,14‒13,50 t/ha), which has been irrigated by the Dnieper water of the I class of availability.The grain yield of rice depended on the irrigated water quality and varieties of crops. Mixed water has reduced the rice grain yield of the early ripening varieties of only 4,45‒5,43 %. Reducing of the grain yield of the middle ripening varieties using mixed water was alike.The economic efficiency of cultivation of maize in both studied farms has depended on the irrigated water quality, maturity group hybrids, weather conditions and soil fertility. On the irrigated lands of the Askaniya agricultural experimental station the net income in all the investigated hybrids was higher than on the lands of the Institute of irrigated agriculture, the level of profitability was also higher,but the cost price of 1 ton of grain, on the contrary, lower.The cost of cultivation of rice by moistening backgrounds were close. The additional costs of growing of early ripening varieties in the conditions of mixed water compared with the Dnieper irrigated water have been only 99, while middle ripening varieties ‒ 146 UAH/ha. The multi-vector effect from the water resources protection of the Black sea region by reducing the drainage waste effluents into theBlack seabays could not be overestimated. 

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Published
2017-07-07
Section
Agricultural sciences (agronomics, agricultural ecology, land reclamation, ecology, crops husbandry, farming)