Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/49884
Title: Carbon dioxide flux of conventional and slow or controlled release nitrogen fertilizers in coffee crop
Keywords: Coffee arabica
Nitrogen fertilization
Enhanced efficiency fertilizers
C-CO2 emission
Café - Adubos e fertilizantes
Fertilizantes nitrogenados
Fertilizantes de eficiência aprimorada
Dióxido de carbono - Emissão
Issue Date: Sep-2021
Publisher: Taylor & Francis Group
Citation: SARKIS, L. F. et al. Carbon dioxide flux of conventional and slow or controlled release nitrogen fertilizers in coffee crop. Communications in Soil Science and Plant Analysis, [S.I.], v. 52, n. 22, p. 2884-2897, 2021. DOI: 10.1080/00103624.2021.1971690.
Abstract: The use of nitrogen (N) fertilizers is of great agronomic, economic, and environmental importance. The present study was performed to evaluate carbon dioxide (CO2) flux of conventional and slow or controlled release N fertilizers. The experiment was carried out under field conditions in an Oxisol under coffee crop. The treatments were: urea, urea dissolved in water, ammonium nitrate, ammonium sulfate, urea + NBPT, urea + S0 + polymer, urea + plastic resin, urea + 0.15% Cu + 0.4% B and urea formaldehyde distributed in three fertilizations with doses of 150 kg ha−1 of N (450 kg ha−1 year−1). Total CO2 flux was measured on soil surface using an infrared gas analyzer with a dynamic closed chamber constructed from a PVC pipe. Daily CO2 emissions for urea + plastic resin, urea + NBPT, ammonium nitrate and ammonium sulfate were lower than urea in all fertilizations. Total CO2 emissions from fertilizers were ranked as: urea (2819.5 kg ha−1) > urea + S0 + polymer (2265.1 kg ha−1) > urea + Cu + B (2065.9 kg ha−1) = urea formaldehyde (1401.9 kg ha−1) = urea dissolved in water (1586.1 kg ha−1) = urea + plastic resin (1756.8 kg ha−1) = urea + NBPT (1561.2 kg ha−1) = ammonium sulfate (1936.2 kg ha−1) = ammonium nitrate (1465.6 kg ha−1) = control (1629.7 kg ha−1).
URI: https://doi.org/10.1080/00103624.2021.1971690
http://repositorio.ufla.br/jspui/handle/1/49884
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