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Registration Number

0225U003426, (0121U109729) , R & D reports

Title

To develop theoretical principles of ecologically balanced fertilizer systems for optimization of mineral nutrition of plants in field crop rotations of the Forest-Steppe zone

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Встановити зміни водного і поживного режимів сірого лісового ґрунту під культурами польової сівозміни за застосування засобів хімізації

Head

Dehodiuk Stanislav Е., Доктор сільськогосподарських наук

Registration Date

26-06-2025

Organization

National scientific centre "Institute of Agriculture of the Ukrainian Academy of Agrarian Sciences"

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Develop scientific principles of efficient agriculture in the short-rotation field crop rotation of the Forest-Steppe ecologically balanced fertilizer systems to optimize mineral nutrition of plants and reproduce the fertility of gray forest soil with high productivity and quality of basic products.

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 In a five-field field crop rotation in 2021, monitoring was carried out to establish changes in soil water and nutrient regimes under different fertilization systems under buckwheat, pea and winter wheat crops. A positive effect of fertilizers on reducing the temperature of the arable (0-20 cm) soil layer and moisture accumulation, improving physicochemical indicators, and humus content under moderate loads of organic and mineral fertilizers was established. Approximate indicators to average fertilizer doses were obtained when applying organo-mineral bioactive fertilizers (OMBD) in doses of 1 t/ha of the 4-4-4 brand and 0.5 t/ha + N40, which indicates the prospects for their introduction into agriculture for the purpose of expanded reproduction of soil fertility. The application of OMBD, cattle manure, as well as the combined application of cattle manure with mineral fertilizers at a dose of N100P60K100 contributed to the optimization of the functioning of the soil microbiota, which was accompanied by an increase in its number by 2.2 and 3.5 times, diversity by 18.5%, the intensity of linen decomposition and CO2 emission by 1.5 times compared to the control and mineral fertilizer system. The intensity of organic matter transformation increased in the direction: N100P60K100 → control → cattle manure + N100P60K100 → cattle manure → OMBD. At the same time, with the application of OMBD, the processes of organic matter synthesis prevailed over its destruction (KМ.-I. = 0.96), which contributed to the preservation (KP. = 0.79) of soil organic matter. It was determined that the use of different levels and types of fertilizer, as well as OMBD, contribute to an increase in the yield of field crop rotation crops: winter wheat grain - by 35-62%, buckwheat - 27-84% and peas - 9-38%, with yields in the control without fertilizers, respectively - 3.56, 1.15 and 2.61 t/ha. The results of the research can be used in collective farms and farms of the Polissya and Forest-Steppe zone

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2025-06-26