Abstract
Nitrous oxide (N2O) emission from fertilized maize fields was measured using a closed chamber at four experimental sites in Thailand. The average measured N2O flux from unfertilized plots through crop season was 4.16 ± 1.52, 5.05 ± 1.65, 5.25 ± 1.68 and 6.74 ± 2.95 μg N2O-N m-2 h-1, at Nakhon Sawan, Phra Phutthabat, Khon Kaen and Chiang Mai, respectively. Increased N2O emissions by the application of nitrogen fertilizer were 0.22–0.44, 0.19–0.38%, 0.12–0.24 and 0.08–0.15% of the applied N, respectively. Compared to other data, N2O emission rate to applied nitrogen was not significantly different between the data of Thailand and the Temperate Zone.
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Watanabe, T., Chairoj, P., Tsuruta, H. et al. Nitrous oxide emissions from fertilized upland fields in Thailand. Nutrient Cycling in Agroecosystems 57, 55–65 (2000). https://doi.org/10.1023/A:1009764421174
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DOI: https://doi.org/10.1023/A:1009764421174