Nitrous oxide emission from upland soil
1998
Prapai Chairoj | Suphakan Luanmani | Watanabe, T. | Tsuruta, H. | Minami, K. (Department of Agriculture, Bangkok (Thailand). Soil Science Div.)
Nitrous oxide emission from fertilized corn field was measured from Takli soils of Nakhon Sawan Field Crop Research Center (FCRC), Pak Chong soils of Phraputtabalh Field Crop Experimental Station, San Sai soils of Chiang Mai FCRC and Yasothon soils of Khon Kaen FCRC Research results show that mostly N2O emitted from nitrogen fertilizer especially ammonium form fertilizer. The N2O emission rate from nitrogen fertilized and nonfertilized fields were 0.31 and 0.11 mgN2O-N/square m/day respectively. The total amount of N20 emission in respecaverage for the entire growing period of corn by nitrogen application was 19.89 mgN2O-N/square m which was accounted only for 0.31 percent as percentage of nitrogen fertilizer application. Research also showed that soil moisture and ammonium content were the important factors for N2O emission from field crop.
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