Search academic texts

Information × Registration Number 0225U000888, (0121U000048) , R & D reports Title To establish regularities of organic carbon transformation in crop rotations of the Left-Bank Forest-Steppe popup.stage_title Розробити модель трансформації органічного вуглецю в агроценозах зернопросапних 7-10- пільних сівозмін 3 різним насиченням зерновими та просапними культурами при використанні різних видів органічних добрив та виявити вплив на продуктивність культур і стан родючості чорнозему Head Demydenko Oleksandr V., Доктор сільськогосподарських наук Registration Date 21-01-2025 Organization Cherkasy State The Agricultural Experimental Station of National Scientific Center "Institute of Agriculture of National Academy of Agrarian Sciences of Ukraine" popup.description1 popup.description2  In the long-rotation crop rotation, the content and stock of total humus, humus carbon, and in terms of Cg and Corg-CO2 stocks (in terms of deposited CO2) in the 0-20 cm layer was higher by 0.14%, 0.08%, 1.3 t/ha, and 4.6 t/ha, respectively, and in the 20-30 cm soil layer: by 0.13%, 0.07%, respectively, of humus Cg content, while the Cg and Corg-CO2 stocks were equal. In the 0-30 cm layer in the 7-10-type crop rotations, the humus content was higher by 0.13%, Cg – by 0.08%, and the Cg and Corg-CO2 stocks – by 15.6 t/ha compared to the short-rotation crop rotations. When replacing manure with by-products, the total removal of Corg from the agrocenosis due to the applied manure decreased by 2.2 times, and the removal of the marketable part of the crop accounted for 1.5 times less Corg. The loss of organic carbon through mineralization (Corg(СО2)) was 3.39 times lower compared to the use of straw. The intensity of the Corg balance in the agrocenosis when manure was applied increased by 1.7 times and reached 30-36%. When manure was applied through mineralization, 3.45 times less СО2 was released into the atmosphere by cumulative output: 580 t/ha versus 2000 t/ha when applying the non-marketable part of the crop or 40 t/ha and 135 t/ha, respectively. In the general series of crop rotations for 7-10-field crop rotations, the most effective were No. 5, which is 50% - grains, 20% - row crops, 30% - fodder with a humus content of 4.01%; crop rotation No. 9: 50% - grains, 10% - legumes, 20% - row crops, 20% - fodder; No. 2 - 50% - grains, 20% - technical, 20% - peas, 10% - fodder; No. 17 - 40% - grains, 20% - legumes, 30% - technical, 10% - fodder. Product Description popup.authors Demydenko Oleksandr V. Kolomiiets Yuliia M. Kravchenko Vitalii P. Shapoval Ivan S. Yarmilko Svitlana A. popup.nrat_date 2025-01-21 Close