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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Aksomaitienė, Ramutė;Gužys, Saulius;Petrokienė, Zita;Kutra, Saulius
Title: Mineral nitrogen and phosphate cycles in different agroecosysterns
Is part of: Journal of sustainable agriculture. , Vol. 29, iss. 4 (2007)
Extent: p. 39-60
Date: 2007
Note: WOS:000245016900003
Keywords: Cropping systems;Phosphorus loss;Water-quality;Nitrate;Land;Agriculture;Management;Fertilizer;Drainage;Balance
Abstract: The current investigation compared various intensive crop rotations (Norfolk, row crops, cereals, short-term grass) grown on Cambisols. The results showed significant effects of N fertilization on the agroecosystem and N balance, and on the mineral N concentration in drainage water and its leaching process. The highest N concentration in drainage water and leaching was determined in the cereals and row crops rotations. No major impact of the crop rotation on the P-PO43- concentration in drainage water was determined. The average leaching of P-PO43- by drainage did not exceed 100-140 g ha(-1) within a seven-year study period. A rational and well-considered fertilization regime ensures high crop productivity and profitable farming as well as a steady close-to-neutral N balance, which is the main condition for reducing the on-point source pollution of water
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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