Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Major plant nutrient-releasing patterns in the leachates from the soil incorporated rice hull biochar adjusted pH with dry fish powder

산도를 조절한 왕겨 바이오차와 어분 혼합물을 처리한 토양 침출수의 양분용출 패턴

  • Jae-Lee Choi (Bio-technology of Multidisciplinary Sciences, Co., JBTP R&D Center) ;
  • DongKeon Lee (Bio-technology of Multidisciplinary Sciences, Co., JBTP R&D Center) ;
  • MinJeong Kim (Organic Agriculture Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • JooHee Nam (Environment-Friendly Microorganism Research Institute, Gyeonggi-Do Agricultural Research and Extension Service) ;
  • ChangKi Shim (Organic Agriculture Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • SeungGil Hong (Department of Digital agriculture, Rural Development and Administration) ;
  • JoungDu Shin (Bio-technology of Multidisciplinary Sciences, Co., JBTP R&D Center)
  • 최재이 (전북테크노파크 전북과학기술센터 다학바이오택) ;
  • 이동건 (전북테크노파크 전북과학기술센터 다학바이오택) ;
  • 김민정 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 남주희 (경기도농업기술원 친환경미생물연구소) ;
  • 심창기 (농촌진흥청 국립농업과학원 유기농업과) ;
  • 홍승길 (농촌진흥청 디지털농업추진단) ;
  • 신중두 (전북테크노파크 전북과학기술센터 다학바이오택)
  • Received : 2023.08.10
  • Accepted : 2023.08.29
  • Published : 2023.09.30
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Abstract

This batch experiment was conducted to investigate the patterns of major plant nutrients in the leachates from the soil that was incorporated with rice hull biochar adjusted pH with dry fish powder utilizing rice hull biochar for loading the soil microorganisms. The rice hull biochar adjusted pH between 6.0 and 7.0, and the mixture ratio of rice hull biochar and dry fish powder was 4:6. The treatments consisted of three; the soil incorporated with rice hull biochar non-adjusted pH with dry fish powder as control (RB + DF), the soil incorporated with rice hull biochar adjusted pH by pyroligneous acid solution and dry fish powder (RBP+DF), and the soil incorporated with rice hull biochar adjusted pH by citric acid solution and dry fish powder (RBC+DF). NH4-N, NO3-N, PO4-P, and K concentrations in the leachates were analyzed during incubation. The accumulated NH4-N and PO4-P concentrations in the leachates from the RBC+DF treatment were the highest during leaching periods. The highest accumulated NO3-N and K concentrations in the leachates from the RBP+DF treatment were observed. It observed that NH4-N and PO4-P were more released in the adjusted citric acid solution, but NO3-N and K were less released than those in the pyroligneous acid solution due to their low absorption capacity. Furthermore, it is necessary to investigate crop growth responses to the soil incorporated with adjusted pH rice hull biochar and dry fish powder for loading soil microorganisms.

본 연구의 목적은 바이오차를 미생물 담체로 활용하기 위해 pH 조절제로서 구연산과 목초액을 각각 처리한 왕겨 바이오차와 어분을 혼합한 토양 침출수의 양분 용출 패턴을 구명하기 위해 수행하였다. 왕겨 바이오차 pH 6.0~7.0와 어분을 혼합비(4:6)로 조제하였다. 본 실험의 처리는 산도를 조절하지 않은 바이오차 처리한 토양을 대조구(RB+DF), 목초액으로 산도 조절한 왕겨 바이오차와 어분의 혼합물(RBP+DF)을 처리한 토양, 구연산으로 산도 조절한 왕겨 바이오차와 어분의 혼합물(RBC+DF)을 처리한 토양 3 수준으로 구성되어 있다. 왕겨 바이오차와 어분을 혼합한 토양 침출수 중에 NH4-N, NO3-N, PO4-P, K의 농도를 분광계를 이용하여 분석하였다. 실험 결과로서 RBC+DF 처리한 토양의 침출수 중에 NH4-N와 PO4-P 누적함량은 가장 높았고, 또한 RBP+DF를 처리한 토양의 침출수에서 NO3-N와 K의 누적함량은 가장 높게 나타났다. 대조구에 비해 NH4-N와 PO4-P는 구연산으로 산도를 조절한 왕겨 바이오차를 처리한 토양의 침출수에서, NO3-N와 K는 목초액으로 조절한 왕겨 바이오차 처리한 토양의 침출수에서 각각 흡착능이 낮아 더 많이 용출되는 것으로 관측되었다. 따라서, 미생물 담체로서 산도를 조절한 왕겨 바이오차의 시용에 따른 작물 생육 반응에 관한 연구가 필요하다고 판단된다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 국립농업과학원 연구과제(Project NO. PJ01705803)로 수행되었음을 감사하게 생각합니다.

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