Продуктивність та економічна ефективність вирощування гібридів кукурудзи різних груп стиглості в умовах зрошення

Abstract

The purpose. To determine economic efficiency of elements of technique of growing hybrids of corn of different groups of maturity in conditions of irrigation of South Steppe of Ukraine. Methods. Results of researches spent during 2014–2016 were generalized by systems analysis, field, laboratory, analytical, mathematical-statistical and calculation-comparative methods. Results. Potential is determined of productivity of hybrids of corn of different groups of maturity in conditions of irrigation of South Steppe of Ukraine. Results are given of experimental researches in influence of times of sowing and plant stand on productivity and economic efficiency of growing hybrids of corn of different groups FAO on dark-chestnut soils of South steppe zone of Ukraine at irrigation. Conclusions. It is determined that the maximum indexes of productivity of grain of hybrids of corn of different groups of maturity can be reached at sowing in the third ten-day period of April of hybrid Tendra with plant stand 90 thousand plants/hectare, middle-early ripening Skadovskyi — 90, middle-ripe­ning Kakhovskyi — 70 thousand plants/hectare. By results of analysis of economic indexes of growing of hybrids of corn for 2014–2016 the cost of gross output for 1 hectares at all terms of sowing and different plant stand was maximum at hybrid Kakhovskyi and made in alternatives of experience 37,7–43,8 thousand hrn/ton, a little bit less — at hybrid Skadovskyi — 32,8–38,1, and the lowest — at hybrid Tendra — 31,9–35,1 thousand hrn/ton. The minimum cost price of 1 ton of grain was at middle-ripening hybrid of corn Kakhovskyi — 1779 hrn/ton at sowing in the third ten-day period of April and with plant stand of 70 thousand plants/hectare. Calculation of economic efficiency of growing hybrids of different groups of maturity testify to the superiority of sowing in the third ten-day period of April of middle-ripening hybrid of corn Kakhovskyi with plant stand of 70 thousand plants/hectare.