Efficiency of Application of Mineral Fertilizers for Winter Wheat on Leached Black Chernozem
Abstract
The article considers the issue of productivity and economic efficiency of the use of slow-acting nitrogen fertilizers obtained using the ”Si” technology of winter wheat. The studies were carried out in 2014–2017 in the northern forest-steppe zone of the Tyumen region on the experimental field of the Agrotechnological Institute of the GAU of the Northern Trans-Urals. increased winter wheat grain yield. Winter wheat productivity according to the studied options on average over the years of research ranged from 3.36–3.41 t/ha, which is higher than the control about the option of 0.27–0.32 t/ha. The economic efficiency of the fertilizers used was determined by the cost of increasing the crop and the cost of obtaining it. Analysis of economic efficiency showed that when sowing the nitrogen fertilizer, urea encapsulated by Si technology (30 kg/ha d.v.) received the highest profitability – 81.68 %. The resulting conditionally net income in this option amounted to 1663.4 rub/ha. In the sixth version of the experiment (encapsulated urea according to the ”Si” technology (60 kg/ha a.v.) + KCl (30 kg/ha a.a.) + P2O5 (40 kg/ha a.a.)) profitability – 76.0 %. Obtained conditionally net income in this embodiment amounted to 1222 rubles/ha. The return on fertilizer use ranged from 4 to 85 %.
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