Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Effect of Immobilized Cells of Pantoea agglomerans on Growth Promotion of Rice(Oryza sativa L.) in the Presence of Rock Phosphates

고정화된 Pantoea agglomrans와 인광석의 복합처리가 벼의 생육 촉진에 미치는 영향

  • Chung, Hee-Kyung (Department of Agricultural Chemistry, Chungbuk National University) ;
  • Ryu, Jeoung-Hyun (Department of Agricultural Chemistry, Chungbuk National University) ;
  • Lee, Hyoung-Seok (Department of Agricultural Chemistry, Chungbuk National University) ;
  • Park, Myoung-Su (Department of Agricultural Chemistry, Chungbuk National University) ;
  • Madhaiyan, Munusamy (Department of Agricultural Chemistry, Chungbuk National University) ;
  • Seshadri, Sundaram (Department of Agricultural Chemistry, Chungbuk National University) ;
  • Sa, Tong-Min (Department of Agricultural Chemistry, Chungbuk National University)
  • Received : 2003.12.06
  • Accepted : 2004.02.02
  • Published : 2004.02.29
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Abstract

A phosphate solubilizig bacterium, Pantoea agglomerans, was isolated from rhizosphere soils collected from Chungbuk area. A greenhouse experiment was conducted to study the effect of combined application of rock phosphate and P. agglomerans inoculation on plant growth and phosphate accumulation of rice (Oryza sativa L.). Apart from control that received no inputs, six treatments were planned as follows; 1) seed bacterization, 2) free cell inoculation and 3) bacteria immobilized beads inoculation, individually and in combination with 1 and 2.5 g of rock phosphate per pot. The results showed that plant growth and phosphate uptake were significantly enhanced as a result of bacterial inoculation. Bacterial inoculation in the form of immobilized beads and 1 g of rock phosphate was found to affect positively the rice plant growth and phosphorus accumulation than other treatments. The available phosphate concentration of the pot mixture also found improved as a result of P. agglomerans inoculation. A positive correlation was observed between the phosphate concentration in the pot mixture and phosphate accumulation in plant.

충북지역의 근권 토양으로부터 선발한 인산가용화 균인 Pantoea agglomeraans와 인광석을 복합처리하여 벼(Oryza sativa L.)의 생육 및 인산 흡수량에 미치는 영향을 온실내에서 실험하였다. 본 실험은, 종자에 박테리아를 적용시킨 것(bactenzation), 독립 세포 및 고정화된 세포(immobilized cell)를 접종시킨 후, 인광석 1 g과 2.5 g을 각각 시비한 6처리구와 무처리구로 나누어 비교 실험하였다. 인산가용화균을 접종한 처리구가 무처리구에 비하여 벼의 생육 및 인산 흡수량을 증대하는 경향을 나타냈으며, 특히 1 g의 인광석과 고정화된 Pantoea agglomerans를 접종한 처리구에서 다른 처리구들에 비해 가장 우수한 결과를 나타내었다. Pot 충진물내의 유효인산 농도 또한 미생물 접종 처리구에서 증가하였으며, 벼에 흡수된 전인산량과 정의 상관관계가 성립함을 알 수 있었다.

Keywords

References

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