EFFECTIVENESS OF COMPREHENSIVE APPLICATION OF MACRO- AND MICROFERTILIZERS IN CULTIVATION OF CORN FOR GRAIN IN THE BRYANSK REGION
2024
Dronov, A.V. | Belchenko, S.A. | Mameev, V.V.
The article presents the results of a study of mineral nutrition and the productive potential of corn for grain in conditions of gray forest soils of the Bryansk Opolye. Field experiments were carried out on the experimental field of the Bryansk State Agrarian University in the period 2021-2023. The purpose of this work is to identify the effectiveness of mineral and microfertilizers when cultivating corn for grain in the agroclimatic conditions of the region. The domestic early maturing corn hybrid Voronezhsky 175 ASV (FAO 180) was taken as the object of research. Field, laboratory and statistical methods were used. The objectives of study included assessing the impact of integrated use of mineral and chelate-type microfertilizers (Ultramag Combi and KompleMet brand: Corn) on yield, crop structure and grain quality. As a result, the features of formation highly productive corn crops depending on the level of mineral nutrition are considered. On average, over 3 years, against the background of the main application of azophoska (N80P80K80), a significant increase in grain yield by 1.79 t/ha or 33.4% was ensured by the use of ammonium sulfate (N65) in pre-sowing soil preparation. Against the background with azophoska + ammonium sulfate, a significant increase in grain yield (1.03 t/ha or 11.4%) was noted when carrying out foliar feeding with KompleMet microfertilizer (norm 2 l/ha) in the phase of 6-8 leaves. In this variant, a high grain yield of 8.17 t/ha was obtained, with better crop structure and grain quality indicators: the content of crude protein reached 10.8%, crude fat and starch-5.4% and 56.9%. This option has the highest level of profitability of 84.3% at a cost of 6,427 rubles per 1 ton of grain.
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