Сільське господарство та лісівництво

Didur Ihor Mykolayovych – Candidate of Agricultural Sciences, Associate Professor of the Department of Agriculture, Soil Science and Agrochemistry, Dean of the Faculty of Agronomy and Forestry of Vinnytsia National Agrarian University (21008, Soniachna Str. 3, Vinnytsia, e–mail: didurihor@gmail.com).

Tsyhanskyi Viacheslav – Candidate of Agricultural Sciences, Associate Professor of the Department of of Plant Production, Selection and Bioenergetic Cultures of Vinnytsia National Agrarian University (21008, Soniachna Str. 3, Vinnytsia, e–mail: tsiganskiyslava@gmail.com).

Televatyuk Bohdan Ivanovych – graduate student of the Department of Agriculture, Soil Science and Agrochemistry of Vinnytsia National Agrarian University (21008, Soniachna Str. 3, Vinnytsia, e–mail: televatyk.b@gmail.com).

Bandrovsky Dmytro Vitaliyovych – postgraduate student of the Department of Forestry and Horticulture of Vinnytsia National Agrarian University (21008, Vinnytsia, Sonyachna St. 3).

The purpose of the study was to determine the energy efficiency of growing corn hybrids of different maturity groups, depending on the combined use of mineral and biological fertilizers and plant density in the conditions of the Right-Bank Forest-Steppe on gray forest soils. The main indicator showing the energy efficiency of growing crops is the energy coefficient of the technology, which shows the ratio of the energy obtained with the harvest to the amount of total energy spent on growing this crop. Rational use of energy resources is one of the most important prerequisites for the growth of agricultural production. In this regard, it is necessary to analyze energy costs when growing modern hybrids, including corn, using already known and new elements of growing technology, which gives grounds to recommend to farms of various forms of ownership the technology that is most energy-saving, which is highly relevant in the conditions of modern crop production. The three-factor field experiment was conducted during 2021-2023 on the experimental field of the Agronomichne research farm of the Ukrainian National Academy of Sciences, the soil of the experimental field is gray forest medium loam. According to the results of the analysis of the energy efficiency of models of corn hybrid cultivation technology, it was found that the most effective model is the one that involves sowing the P8834 hybrid with a density of 70 thousand / ha, applying mineral fertilizers at a dose of N120P60K60 and pre-sowing cultivation of the Groundfix biofertilizer (6 l / ha), which ensures the highest indicator of the energy coefficient of sowing - 3.13, which is 0.30 more than the control. In the experimental variants where the P8834 hybrid was sown with a lower level of mineral fertilizer (N80P40K40) and the use of Groundfix soil biofertilizer in pre-sowing cultivation with rates of 4 and 5 l/ha, the energy coefficient was, respectively, 2.85 - 2.93 and 2.99 - 3.07.

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