Effects of Oyster-Shell Meal on Improving Spring Chinese Cabbage Productivity and Soil Properties

굴 패화석 비료가 배추 수량 및 토양 특성에 미치는 효과

  • Lee, Ju-Young (Department of Plant Nutrition, National Institute of Agricultural Science and Technology) ;
  • Lee, Chang-Hoon (Division of Applied Life Science, Graduate School, Gyeongsang National University) ;
  • Yoon, Young-Sang (Department of Plant Resources, Kongju National University) ;
  • Ha, Byung-Hyun (Product Development Tram, Namhae Chemical Co.) ;
  • Jang, Byoung-Choon (Department of Plant Nutrition, National Institute of Agricultural Science and Technology) ;
  • Lee, Ki-Sang (Department of Plant Nutrition, National Institute of Agricultural Science and Technology) ;
  • Lee, Do-Kyoung (Plant Science Department, South Dakota State University) ;
  • Kim, Pil-Joo (Division of Applied Life Science, Graduate School, Gyeongsang National University)
  • Received : 2005.08.29
  • Accepted : 2005.09.20
  • Published : 2005.10.30

Abstract

Enormous amount of oyster-shell waste has been illegally disposed at oyster farm sites along the southern coast of Korea and then made a serious problem in environmental side. To increase the consumption of oyster shell meal as a soil amendment, the effects of oyster shell meal on soil properties and spring Chinese cabbage productivity were evaluated in silt loam soil to which 0, 4, 8, 12 and $16Mg\;ha^{-1}$ of oyster-shell meal fertilizer were added. Hydrated lime treatment ($2Mg\;ha^{-1}$) was selected as a control. Oyster-shell meal fertilizer, which made by a simple crushing and has high alkalinity as a calcium materials, had significant effects on neutralizing acid soil and on supplying calcium element. Spring Chinese cabbage yields increased with shell meal application. Plant uptakes of macro-nutrients such as P and C, and micro-nutrient such as B were significantly increased by oyster-shell meal application and then contributed to promote Chinese cabbage growth. The highest yield was achieved following the addition of $8Mg\;ha^{-1}$ shell meal application, and the same yield with that in lime treatment was at the $4Mg\;ha^{-1}$. Oyster-shell meal had more substantial effect on suppling calcium and on improving soil pH than that of lime. In conclusion, oyster shell meal fertilizer could be a good supplement to other inorganic soil amendments to improve nutrient balances in upland soils.

남부해안지역의 굴 양식장에서 배출량이 날로 증대되고 재활용도가 낮아 지역적으로 문제가 되고 있는 굴 패각으로부터 제조된 굴패화석 비료의 농업적 활용성을 평가하기 위해 봄배추의 수량, 그리고 토양의 이화학적 특성에 미치는 영향을 조사하였다. 일반 밭토양에서 배추의 최고수량은 굴패화석 비료 약 $9Mg\;ha^{-1}$ 처리 시 획득이 가능하였으며, 약 $4Mg\;ha^{-1}$ 처리 시 소석회의 추천시비량 $2Mg\;ha^{-1}$에서와 동일한 수준의 수량을 얻을 수 있었다. 굴패화석 비료는 토양의 pH 교정, 칼숨 및 붕소 공급효과가 비교적 양호하였으며, 밭 토양에서 배추의 최고수량은 굴패화석 비료 약 $9Mg\;ha^{-1}$ 처리 시 획득이 가능하였으며, 굴패화석 비료 약 $4Mg\;ha^{-1}$ 처리 시 소석회 추천량 $2Mg\;ha^{-1}$ 처리 때와 동일한 수준의 토양 pH 교정과 Ca 공급 효과가 있었다. 그러나 굴패화석 비료의 과량시용은 토양 내 치환성 Ca 농도증가에 의한 배추의 생육저해 및 수량 감소, 그리고 토양의 물리성 악화 원인이 된 것으로 평가되었다. 그러므로 굴패화석 비료의 활용도를 증진 시키기 위해서는 이 부분에 대한 문제해결을 위한 대처방안 수립이 필요할 것으로 사료된다. 그리고 굴패화석 비료는 비교적 많은 양의 붕소를 포함하고 있어 배추에 대한 붕소시용 대체효과 및 미량원소의 이용률을 증진 효과가 있었다. 따라서 굴패화석 비료는 토양 pH 교정 및 미량원소 공급을 할 수 있는 토양개량제로서의 활용도가 높은 것으로 평가되었다.

Keywords

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