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Information × Registration Number 0225U005042, (0121U107977) , R & D reports Title To develop methods for stabilizing the organic matter content of the southern chernozems for the adaptation of plant nutrition systems to climate change in the South-Steppe zone of Ukraine popup.stage_title Розробити прийоми стабілізації вмісту органічної речовини чорноземів південних для адаптації систем живлення рослин до кліматичних змін Південно-cтепової зони України Head Burykina Svitlana I., Кандидат сільськогосподарських наук Registration Date 24-12-2025 Organization Odesa State Agricultural Experimental Station of the Institute of Climate-Smart Agriculture of the National Academy of Agrarian Sciences of Ukraine popup.description1 To develop methods for stabilizing the organic matter content of the southern chernozems for the adaptation of plant nutrition systems to climate change in the South-Steppe zone of Ukraine popup.description2 It has been established that green manure, both as an independent element of technology and in combination with fertilizers, significantly influences the transformation of organic matter and the yield of winter wheat: the process of organic matter decomposition depends on its type and weather conditions during the decomposition period. The amount of available nutrients formed is highly correlated with precipitation (r=0.61–0.97). In terms of its effect on the content of available nutrients in the soil, green manure crops outperform fallow land: the amount of available nitrogen increases by 21–30%. In terms of accumulation of mobile phosphorus, the green manure crop Phacelia is more advantageous, while for potassium, it is rape; the types of fertilization systems influence the fraction-group composition and available forms of organic matter in the southern chernozem soil. Economic efficiency has been calculated: Nitrogen-phosphorus fertilizer (N10P46) showed a high level of profitability when used for wheat cultivation on green manure fallows, ranging from 118.6% (Phacelia + Rape) to 336.1% (Rape). For wheat cultivation with fertilizers having a fertilizer-stimulating effect on green manure fallows, the profitability was 136.5% (Extra + Amino + Cereals); on Phacelia green manure fallow, the humic preparation Humistar provided a profitability of 225.8%. The cost of nitrogen from green manure crops, depending on the type of crop and its yield, ranged from 28.3 UAH/kg to 41.1 UAH/kg, while nitrogen from mineral fertilizers ranged from 64.7 UAH/kg to 168.8 UAH/kg. Testing and implementation of research results were carried out. Scientific and practical recommendations have been developed, with scientifically grounded measures for adapting plant nutrition systems aimed at stabilizing the organic matter content as the basis for crop productivity, the effectiveness of agriculture in Southern Ukraine, and preventing the degradation chernozem soil cover. Product Description popup.authors Svitlana P. Uzhevska Svitlana I. Burykina Viacheslav A. Rudenko Mykola M. Zhuk Valentyna M. Khimich Oksana V. Korienna popup.nrat_date 2025-12-24 Close