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Information × Registration Number 0225U003459, (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 popup.stage_title Визначити зміни агрохімічних показників і вмісту мікроелементів та важких металів в сірому лісовому ґрунті за різних рівнів удобрення Head Dehodiuk Stanislav Е., Доктор сільськогосподарських наук Registration Date 30-06-2025 Organization National scientific centre "Institute of Agriculture of the Ukrainian Academy of Agrarian Sciences" popup.description1 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. popup.description2  The results of the research provided basic information on the directions of transformation of organic matter, soil microbiological activity, content of trace elements and heavy metals under different fertilization systems. It was determined that with the systematic application of organic and mineral fertilizers, the highest content of total humus - 1.32 and 1.38% was achieved under organo-mineral (12 t/ha of cattle manure + N100P60K100) and organic (12 t/ha of cattle manure per 1 ha of crop rotation area) fertilization systems with an increase in humus reserves in the arable soil layer to 35.6 (36%) and 37.3 t/ha (42%) compared to the control without fertilizers. Criteria for changes in agrochemical indicators, trace elements and heavy metals under different levels of fertilization. Scientific report (interim). It was determined that with the systematic application of organic and mineral fertilizers, the expanded reproduction of gray forest soil is achieved under organo-mineral (12 t/ha of cattle manure + N60P60K68 on average per crop rotation) and organic (12 t/ha of cattle manure) fertilization systems with an increase in humus reserves in the 0-20 cm layer to 36.2 and 37.0 t/ha or 34 and 37% higher compared to the control without fertilizers - 27.0 t/ha. A clear trend towards an increase in the content of trace elements in the soil under organo-mineral and mineral fertilization systems was established for copper by 48-51%, zinc by 14-19%, manganese by 28-94%, and iron by 120-250% compared to the initial content, which was 0.12 mg/kg, 1.05, 20.0, and 4.0 mg/kg, respectively. It was determined that with the use of increasing doses of mineral fertilizers from N50Р30К50 to N150Р90К150, as well as with an intensive organo-mineral fertilization system of 12 t/ha of cattle manure + N100Р60К100, there was an increase in the content of heavy metals in the soil, namely cadmium by 30-50% and nickel by 18-30% compared to the initial content, which was 1.1 mg/kg, respectivel Product Description popup.authors popup.nrat_date 2025-06-30 Close