- Volume 32 Issue 4
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Effects of Compost Application and Plastic Mulching on Soil Carbon Sequestration in Upland Soil
밭토양에서 퇴비시용과 비닐멀칭이 토양탄소 축적에 미치는 영향
- Kang, Jum-Soon (Department of Horticultural Bioscience, Pusan National University) ;
- Suh, Jeong-Min (Department of Bio-Environmental Energy, Pusan National University) ;
- Shin, Hyun-Moo (Department of Environmental Engineering, Kyungsung University) ;
- Cho, Jae-Hwan (Department of Agricultural Economics, Pusan National University) ;
- Hong, Chang-Oh (Department of Life Science and Environmental Biochemistry, Pusan National University)
- 강점순 (부산대학교 원예생명과학과) ;
- 서정민 (부산대학교 바이오환경에너지학과) ;
- 신현무 (경성대학교 환경공학과) ;
- 조재환 (부산대학교 농업경제학과) ;
- 홍창오 (부산대학교 생명환경화학과)
- Received : 2013.09.15
- Accepted : 2013.10.26
- Published : 2013.12.31
BACKGROUND: In most studies, soil carbon sequestration has been evaluated simply with change of soil organic carbon content. So far, information regarding stability of soil organic carbon is limited. METHODS AND RESULTS: This study was conducted to determine changes in soil organic carbon (SOC) content and stability of carbon in response to compost application rates and plastic mulching treatment during the hot pepper growing season. Under the pot experiment condition, compost was mixed with an arable soil at rates corresponding to 0, 10, 20, and 40 Mg/ha. To determine effects of plastic mulching on soil carbon sequestration, plastic mulching and no mulching treatments were set up in soils amended with the application rate of 20 Mg/ha. The SOC content did not significantly increase with application of compost and plastic mulching at harvest time. No significant changes in bulk density with compost application and plastic mulching was found. These might result from short duration of experiment. While hot water extractable organic carbon content significantly decreased with compost application and plastic mulching, humic substances increased. Belowground biomass of hot pepper was biggest at the recommended application rate (20 Mg/ha) of compost. CONCLUSION: From the above results, continuous application of compost at the recommended application rate could improve increase in SOC content and stability of carbon in long term aspect.
Grant : Cooperative Research Program for Agriculture Science & Technology Development
Supported by : Rural Development Administration
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