Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Growth and Mineral Composition of Young Radish in Soils Amended with Sewage Sludge and Lime

하수오니 및 석회시용이 열무의 생육과 화학성분에 미치는 영향

  • Jung, Goo-Bok (National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Won-Il (National Institute of Agricultural Science and Technology, RDA) ;
  • Lee, Jong-Sik (National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Jin-Ho (National Institute of Agricultural Science and Technology, RDA) ;
  • Yun, Sun-Gang (National Institute of Agricultural Science and Technology, RDA)
  • 정구복 (농업과학기술원 환경생태과) ;
  • 김원일 (농업과학기술원 환경생태과) ;
  • 이종식 (농업과학기술원 환경생태과) ;
  • 김진호 (농업과학기술원 환경생태과) ;
  • 윤순강 (농업과학기술원 환경생태과)
  • Published : 2003.06.30
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Abstract

Growth and mineral composition of young radish in soil amended with sewage sludge (ISS) with or without liming were investigated. Levels of EC, T-N, and micronutrients were increased in the ISS treatment (50 Mg/ha) compared to the NPK treatment but those of available P and exchangeable cations were decreased. Chlorosis was appear on the young radish leaf at the ISS treatment, but this phytotoxic symptom was corrected with lime amendment (3 Mg/ha). Yields of young radish leaf and root in the combined treatment of ISS and lime were increased about 29 and 48%, respectively, compared with those in the ISS treatment. Contents of P, K, Ca, and Mg in young radish were higher in the combined treatment to ISS and lime, whereas those contents in the ISS treatment were lower than those in the NPK treatment. Contents of Cu, Zn, and Ni in soil and young radish leaf were positively correlated with total N content in young radish leaf, while contents of P, K, Ca, and Mg were negatively correlated. Contents of Cu, Zn, and Ni in leaf were negatively correlated with yield of young radish. Contents of Cu and Zn in leaf corresponding with a 5% yield reduction of young radish were 22.4 and 349 mg/kg, respectively.

하수오니의 농경지 유입에 따른 작물의 생육상황, 피해증상 및 부위별 무기성분 함량에 미치는 석회의 개량 효과를 검토하고, 토양 및 식물체중의 화학성분이 식물생육에 미치는 영향을 살펴보기 위하여 공단하수오니 및 석회를 조합 처리하고 3요소구를 대조구로 하여 열무의 생육상과 화학성분 함량을 분석 비교하였다. 시험 후 토양의 화학성은 하수오니구가 3요소구와 비교하여 EC, T-N 및 미량성분 함량은 높았고, Av, $P_2O_5$ 및 치환성 양이온은 낮게 나타났다. 하수오니 시용구에서 열무의 피해증상으로 잎의 황백화 현상을 보였으나 석회처리구에서는 생육이 양호하였고 황백화 현상도 나타나지 않았다. 하수오니 시용구에서 석회의 개량효과로 열무 생육과 수량감소를 경감시키는 효과가 나타났으며, 특히 하수오니 50 Mg/ha 구에서는 무처리에 비해 잎과 뿌리의 수량이 각각 29%, 48% 증수되었다. 하수오니 시용구에서 3요소구와 비교하여 열무증의 유효성분인 P, K, Ca 및 Mg 함량이 낮았으나 석회처리로 열무에 흡수된 유효성분 함량이 높아지는 경향을 보였다. 토양 및 열무 엽중의 Cu, Zn, Ni 함량을 열무 잎의 T-N과는 정의 상관, P 및 양이온과는 부의 상관을 보였다. 열무중의 Cu, Zn, Ni함량은 잎과 뿌리 모두에서 열무 생체수량과 고도의 부의 상관을 보였다. 2차 회귀식에 의해 계산된 열무 엽중의 Cu, Zn에 대한 5% 수량감소 농도는 각각 22.4, 349 mg/kg이었다.

Keywords

References

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