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Impact of nitrification inhibitor with organic manure and urea on nitrogen dynamics and N2O emission in acid sulphate soil


Citation

Shamsuzzaman, Shordar Mohamed and Musa, Mohamed Hanafi and Abd. Wahid, Samsuri and Mohd Saud, Halimi and Begum, Masuda and Jantan, Nur Maisarah (2016) Impact of nitrification inhibitor with organic manure and urea on nitrogen dynamics and N2O emission in acid sulphate soil. Bragantia, 75 (1). pp. 108-117. ISSN 0006-8705; ESSN: 1678-4499

Abstract / Synopsis

The accurate prediction of N transformation is an important requisite for optimizing N use efficiency in cropping systems. An incubation study was conducted to verify the impacts of nitrification inhibitor (NI) with organic manure (OM) and urea on N dynamics and N2O emission in acid sulphate soil. The conducted experiment was two-level factorial with 4 N sources (N1 = 100% of N from urea, N2 = 75% of N from urea + 25% N from rice straw, N3 = 75% of N from urea + 25% of N from cow dung and N4 = 75% of N from urea + 25% of N from poultry dung) and two levels of NI (with and without DCD). The NI (Dicyandiamide - DCD) with OM + urea enhanced mineral N contents and it was the highest (255.07 µg∙g-1) for urea with DCD applications. The highest net N-mineralization (213.07 µg∙g-1) was recorded for the application of urea with DCD and net nitrification (16.26 µg∙g-1) was recorded for the application of urea alone, but the highest cumulative N2O emission (5.46 µg∙g-1) was in urea + poultry dung (PD). In addition, DCD most effectively inhibited net nitrification (28.78%) and N2O emission (32.40%) from cow dung (CD) and urea in the tested soils. The combination of DCD with CD and urea was more effective in reducing N2O emissions (43.69%). These results suggest that the DCD with CD and urea may be the most potential combination to reduce nitrification and N2O emission as well as N loss from acid sulphate soil.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Institute of Tropical Agriculture
DOI Number: https://doi.org/10.1590/1678-4499.156
Publisher: Instituto Agronomico de Campinas
Keywords: DCD; OM; Urea; Mineral N; Net N-mineralization; Net nitrification; N2O emission
Depositing User: Nabilah Mustapa
Date Deposited: 06 Jun 2017 17:42
Last Modified: 06 Jun 2017 17:42
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1590/1678-4499.156
URI: http://psasir.upm.edu.my/id/eprint/52468
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