Impact of nitrification inhibitor with organic manure and urea on nitrogen dynamics and N2O emission in acid sulphate soil
| Autor: | Soud Mohd Halimi, Mohamed M. Hanafi, Jantan Nur Maisarah, A. W. Samsuri, Masuda Begum, Shordar Mohamed Shamsuzzaman |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
mineral N
Agriculture (General) Materials Science (miscellaneous) net N-mineralization chemistry.chemical_element urea net nitrification S1-972 N2O emission chemistry.chemical_compound Animal science DCD Organic manure lcsh:Agriculture (General) Incubation OM Chemistry Rice straw Nitrogen lcsh:S1-972 Agronomy Soil water Urea Nitrification General Agricultural and Biological Sciences Cow dung |
| Zdroj: | Bragantia, Iss 0, Pp 0-0 (2015) Bragantia, Vol 75, Iss 1, Pp 108-117 (2015) Bragantia v.75 n.1 2016 Bragantia Instituto Agronômico de Campinas (IAC) instacron:IAC Bragantia, Vol 75, Iss 1, Pp 108-117 (2016) Bragantia, Volume: 75, Issue: 1, Pages: 108-117, Published: 27 NOV 2015 |
| ISSN: | 1678-4499 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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