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Effect of Application Rate of Hairy Vetch on Ammonia Emission from Paddy Soil

논에서 헤어리베치 시용량에 따른 암모니아 휘산량 평가

  • Kim, TaeYoung (Division of Applied Life Science, Gyeonsang National University) ;
  • Daquiado, Aileen Rose (Division of Applied Life Science, Gyeonsang National University) ;
  • Alam, Faridul (Division of Applied Life Science, Gyeonsang National University) ;
  • Lee, YongBok (Division of Applied Life Science, Gyeonsang National University)
  • 김태영 (경상대학교 응용생명과학부) ;
  • 아일린 (경상대학교 응용생명과학부) ;
  • 파리둘 (경상대학교 응용생명과학부) ;
  • 이용복 (경상대학교 응용생명과학부)
  • Received : 2012.12.03
  • Accepted : 2012.12.18
  • Published : 2012.12.31

Abstract

BACKGROUND: Hairy ventch (Vicia villosa) is a good green manure for supplying nitrogen in arable soil. Ammonia emission from rice fields can occur, and the degree of this emission can be great. However, quantitative information of ammonia emission from paddy soil using green manure is required to obtain emission factors for rice cropping in Korea. METHODS AND RESULTS: Ammonia emission from flooding soil with different application rate of hairy vetch was measured using the closed chamber method. For this study, hairy vetch was applied at rates of 0 (control), 500 (H500), 1000 (H1000), 2000 (H2000), and 3000 (H3000) kg/ha (fresh matter basis). This experiment was conducted for 54 days under flooding condition. The total NH3 emission throughout the experiment period was 0.32, 0.54, 1.20, 4.20, and 6.20 kg/ha for control, H500, H1000, H2000, and H3000, respectively. The ratio of NH3 emission to applied nitrogen by hairy vetch for each treatment was 0.7, 1.4, 3.2, and 3.2% for H500, H1000, H2000, and H3000, respectively. CONCLUSION(S): A very small amount of ammonia emission was recorded in the present study. Therefore, the use of hairy vetch in paddy field instead of chemical fertilizer can reduce ammonia emissions.

Keywords

Ammonia emission;Green manure;Paddy soil

Acknowledgement

Supported by : Rural Development Administration

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