Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Characteristics of Composting of Castor Oil Cake Mixed with Waste from KimChi Factory and Its Influence on Lettuce Growth

김치공장부산물처리에 따른 아주까리유박의 퇴비화특성 및 시비효과

  • Received : 2017.04.13
  • Accepted : 2017.06.02
  • Published : 2017.06.30
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Abstract

The consumption of KimChi, which Korean are a favorite food, has dramatically increased by changes of life style and waste as by-products in KimChi factory. This study was conducted to evaluate an effect of compost of caster oil cake (COC) mixed with waste from KimChi factory (KWF) and its growth effect of lettuce. Treatments were consisted of 4 treatments as COC compost (60% COC+40% sawdust) as control, control+35% KWF (K-1), control+50% KWF (K-2), and control+65% KWF (K-3). Temperature, pH, O.M. and microbial phase of COC composts blended various ratios of KWF or free were unaffected. It was appeared that nitrogen content of KWF treatments was higher, but the ratio of organic matter and nitrogen was lower than the control. Although KWF treatments were acceptable compost under the guideline of Korean, NaCl content of K-3 was 1.91%, and it was very higher than that of others. In comparison with fresh weight and dry weight of lettuce, K-1 and K-3 were similar to control. These results indicated that the waste from KimChi factory was possible to use the composting raw blended materials below 35% mixtures.

한국인이 가장 좋아하는 음식인 김치의 소비가 증가하면서 김치공장부산물(KWF)도 증가하였다. 본 연구는 KWF를 처리한 아주까리유박의 퇴비화에서 이화학적 특성의 변화와 시비에 따른 상추의 생육을 평가하였다. 처리구는 아주까리유박(60%)과 톱밥(40%)을 혼합한 대조구, KWF 35% 처리구(K-1), KWF 50% 처리구(K-2) 및 KWF 65% 처리구(K-3)로 설정하였다. KWF처리 후 pH, 유기물 및 미생물상은 처리구별 차이를 나타내지 않았으며, 대조구와 비교할 때, KWF처리구의 질소함량은 증가하였고, 유기물대 질소비는 감소하였다. 퇴비화 종료 후 KWF처리구는 비료공정규격에 적합하였으나 K-3의 염분은 1.91%로 다른 처리구들 보다 높았다. K-1처리구와 K-3처리구에서 상추의 생물중과 건물중은 대조구와 비슷하였다. 이러한 결과들은 김치공장 부산물이 퇴비원료로 사용이 가능하지만 작물에 안전한 아주까리유박퇴비의 생산을 위해서는 35% 이하로 사용하는 것이 적절함을 나타내었다.

Keywords

References

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