Nitrous Oxide Emission and Crop Yield in Arable Soil Amended with Bottom Ash

Do-Yeong Hur, Sung-Un Kim, Hyeon-Cheol Park, Keun-Ki Kim, Hong-Ju Son, Kwang-Min Lee, Yu-Jin Kim and Chang-Oh Hong
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Do-Yeong Hur: Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang 50463, Korea
Sung-Un Kim: Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang 50463, Korea
Hyeon-Cheol Park: Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang 50463, Korea
Keun-Ki Kim: Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang 50463, Korea
Hong-Ju Son: Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang 50463, Korea
Kwang-Min Lee: Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang 50463, Korea
Yu-Jin Kim: Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang 50463, Korea
Chang-Oh Hong: Department of Life Science and Environmental Biochemistry, Pusan National University, Miryang 50463, Korea

Agriculture, 2021, vol. 11, issue 10, 1-15

Abstract: Bottom ash (BA), a byproduct of coal combustion from electric power plants with a porous surface texture and high pH, may influence the physical and chemical properties of upland arable soil associated with nitrous oxide (N 2 O) emission from upland soil. This study evaluated the use of BA in mitigating N 2 O emissions from upland arable soil and increasing the crop yield. In a field experiment, N 2 O emitted from the soil was monitored weekly in a closed chamber over a 2-year period (2018–2019). BA was applied to upland soil at the rates of 0, 200, and 400 Mg·ha −1 . Cumulative N 2 O emission significantly decreased with increasing BA application rate; it decreased by 55% with a BA application rate of 400 Mg·ha −1 compared with the control. Yield-scaled N 2 O emission decreased with increasing BA application rates of up to 200 Mg·ha −1 . Water-filled pore spaces (WFPS) were 70.2%, 52.9%, and 45.3% at the rates of 0, 200, and 400 Mg·ha −1 , respectively, during the growing season. For economic viability and environmental conservation, we suggest that BA application at a rate of 200 Mg·ha −1 reduces N 2 O emissions per unit of crop production.

Keywords: bottom ash; nitrous oxide; yield-scaled nitrous oxide emission (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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