ECONOMIC EVALUATION OF THE UREA-AMMONIA MIXTURE APPLICATION WITH INTER-ROW PROCESSING CULTIVATOR

Keywords: corn, productivity, nitrogen fertilizers, tillage, soil, UAN, root, yield, profitability.

Abstract

The profitability of corn production in Ukraine is one of the highest among other crops, but in wartime, a time of economic crisis, the attention of agricultural producers is directed to the maximum saving of material resources. The selection of hybrids, tillage systems, fertilization, application of pesticides and grain drying affect the final cost of the corn grain production. In farms, nitrogen fertilizers for corn are mainly applied in the spring – during pre-sowing cultivation, during sowing, interrow processing, in foliar application. Each term, dose and form of fertilizer application is important, and the effectiveness of the selected technological operations depends on weather conditions, soil properties, timeliness and reasonableness of application, as a whole, on the cultivation technology. Using of the nitrogen fertilizers, it is necessary to minimize the loss of nitrogen from the soil and ultimately obtain products of good quality, for the sale of which the farmer will receive a profit. In the conditions of dark gray forest soils of the Chernihiv Polyssia of Ukraine, the feasibility of applying UAN-32 (solution of urea and ammonium nitrate in water) with inter-row processing in the root application with the mounted cultivator IRIS-T with rates of 50, 80, 110, 140 kg/ha in the phase of 7–8 leaves was investigated. In the fall, before tillage, 120 kg/ha of anhydrous ammonia was applied, the complex fertilizer YaraMila 8-24-24 was applied at the rate of 100 kg/ha in physical weight during sowing. Calculating the economic efficiency of the fertilizer application, the most additional costs were obtained under applying at a dose of 140 kg/ha, and additional profit – at a dose of 110 kg/ha. The level of profitability of this measure was in the range of 54.3-81 %, with the highest parameter using UAN-32. Therefore, in the conditions of dark gray soil, it is recommended to use UAN-32 rootstock on corn crops with rates of up to 110 kg/ha in the 7–8 leaf phase to increase yield and gain profit.

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Published
2023-06-09
How to Cite
Kravchenko, N. V., Adamchyk, Y. V., & Protasov, O. M. (2023). ECONOMIC EVALUATION OF THE UREA-AMMONIA MIXTURE APPLICATION WITH INTER-ROW PROCESSING CULTIVATOR. Bulletin of Sumy National Agrarian University. The Series: Agronomy and Biology, 51(1), 72-78. https://doi.org/10.32782/agrobio.2023.1.9