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Information × Registration Number 0121U108796, ( 0226U000350  ) R & D request Title Investigation of the peculiarities of the biological processes of transformation of organic matter and nitrogen compounds in the soil by modeling different levels of carbon-nitrogen ratio Head Volkohon Vitalii Vasylovych, Доктор сільськогосподарських наук Registration Date 22-02-2021 Organization Institute of Agricultural Microbiology and Agro-industrial Manufacture of National Academy of Agrarian Sciences popup.description1 The aim of the research is to substantiate the principles of correction of carbon-nitrogen ratio for optimization of mineralization-synthesis of organic matter in soils of agrocenoses and fertilizer systems of agricultural crops, which limit the processes of dehumidification of leached chernozem. Since the degree of nitrogen uptake by plants from fertilizers does not exceed 35-50%, the unused share of mineral nitrogen compounds is washed away, denitrified, and initiates the development of specific soil microorganisms. Due to the deficiency of fresh organic matter in the soil and the presence of mineral nitrogen, representatives of certain groups of microbiota can use humic compounds as a source of carbon. The result is an increase in N2O emissions, as well as the development of biological dehumidification of the soil. Therefore, the unused portion of mineral nitrogen must be retained from emission by metabolic binding by microorganisms, which requires an additional supply of carbon (fresh organic matter with a wide C / N ratio). Under these conditions, two problems can be solved - the accumulation in the soil of nitrogen not involved in the production process of nitrogen by converting its mineral compounds into organic, and ensuring the dominance of synthetic processes in the soil (in contrast to the situation in modern agrocenoses dominated by mineralization processes). Solving the problem requires research in the laboratory and in the field with different levels of nitrogen fertilizer for crops and providing the soil with fresh organic matter of various origins with a wide carbon-nitrogen ratio. The application of a sound algorithm for calculating the required amount of nitrogen fertilizers and fresh organic matter in practice will limit the dehumidification of soils of agrocenoses and emission losses of N-N2O, which will have significant economic and environmental effects. popup.nrat_date 2024-12-09 Close