Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Effect of microbial product made of Bacillus stearothermophilus DL-3 on microorganisms in soil and growth of lettuce and Chinese cabbage.

Bacillus stearothermophilus DL-3 미생물 제재의 처리가 토양 미생물상 및 상추와 배추의 생장에 미치는 영향

  • 김순희 (동아대학교 생명자원과하대학 응용생물학과) ;
  • 배계선 (동아대학교 생명자원과하대학 응용생물학과) ;
  • 양재균 (동아대학교 생명자원과학대학 생명공학과) ;
  • 이유정 (동아대학교 생명자원과학대학 생명공학과) ;
  • 오주성 (동아대학교 생명자원과하대학 원예식물생명공학과) ;
  • 정순재 (동아대학교 생명자원과학대학 원예식물생명공학과) ;
  • 문병주 (동아대학교 생명자원과학대학 응용생물학과) ;
  • 이진우 (동아대학교 생명자원과학대학 생명공학과)
  • Published : 2004.10.01
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Abstract

Effect of the microbial product made of Bacillus stearothermophilus DL-3, which was isolated from the soil and identified in this study, and rice bran on microorganisms in soil and growth of lettuce (Red skirt lettuce) and Chinese cabbage (Ga rack new No.1 Chinese cabbage) was investigated. Total numbers of microorganisms in the pot with untreated soil, treated with standard amount of microbial product and treated with double amounts of microbial product for growth of lettuce after 6 weeks were 2.78${\times}$10$^{7}$ CFU/g, 2.72${\times}$10$^{8}$ CFU/g and 3.63${\times}$10$^{8}$ CFU/g. Total numbers of microorganisms in the soil without treatment of microbial product and treated with standard amount of microbial product were 2.06${\times}$10$^{8}$ CFU/g and 5.49${\times}$10$^{8}$ CFU/g. Total numbers of microorganisms in the pot with untreated soil, treated with standard amount of microbial product and treated with double amounts of microbial product for growth of Chinse cabbage after 6 weeks were 1.43${\times}$10$^{7}$ CFU/g, 3.42${\times}$10$^{8}$ CFU/g and 7.22${\times}$10$^{8}$ CFU/g. Total numbers of microorganisms in the soil without treatment of microbial product and treated with standard amount of microbial product were 5.75${\times}$10$^{8}$ CFU/g and 7.96${\times}$10$^{8}$ CFU/g. On basis of leaf length, leaf width, leaf number, wet weight and dry weight, the growth of lettuce and Chinese cabbage on the soil treated with microbial product was faster than that on the untreated soil. The treatment of microbial product in the soil resulted in the increase of useful microorganisms, which seemed to enhance the growth of lettuce and Chinese cabbage.

유기물이 풍부한 토양에서 분리하여 동정한 Bacillus stearothermophilus DL-3와 미강을 사용하여 미생물 제재를 제조하고 미생물 제재의 처리가 상추(적치마 상추)와 배추(가락 신1호 배추)재배 토양의 미생물상에 미치는 영향 및 상추와 배추의 생장에 미치는 영향을 조사하였다. 미생물 제재를 처리 한 6주 후, 미생물 제재를 처 리 한 토양에 존재하는 토양 미생물의 총 균수는 미생물 제재를 처리하지 않은 토양에 존재하는 토양 미생물의 총 균수에 비하여 미생물 제재를 처리한 양에 비례하여 많음을 확인하였다. 미생물 제재를 처리한 토양에서 재배한 상추와 배추의 생육이 미생물 제재를 처리하지 않은 토양에서 재배한 상추와 배추에 비하여 빠름을 확인하였다. 미생물 제재를 처리한 토양에서는 처리하지 않은 토양에 비하여 전체적인 토양 미생물 수의 증가와 작물의 생장에 유용한 종류의 미생물이 상대적으로 증가하기 때문에 상추와 배추의 생장을 촉진시킨다고 판단된다.

Keywords

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