Counter-measure for Reducing Residual Effects of Quinclorac to Followed-by Crops of Paddy Rice

답후작(沓後作)의 Quinclorac 잔류피해(殘留被害)에 대한 경감대책(輕減對策) 연구(硏究)

  • Kuk, Y.I. (Coll. of Agriculture, Chonnam National University) ;
  • Han, S.U. (Coll. of Agriculture, Chonnam National University) ;
  • Guh, J.O. (Coll. of Agriculture, Chonnam National University)
  • Published : 1992.12.30

Abstract

For reducing the residual effects of Quinclorac to followed-by crops of paddy rice, three tests by different soil improvers, different cultural performances with tillage and application of composts, and cultivation of different depletion crops were evaluated, respectively. Among seven soil improvers, activated carbon, composts and perlite showed significant promisable feasibility to reduce phytotoxicity of tomato seedlings as affected by Quinclorac residuals, And comparing to untreated check, the application of tillage and composts prior to transplanting of tomato seedling could helpful to reduce Quinclorac residuals in the soil, but tomato and lettuce, most susceptible crops to Quinclorac, were not remarkably protected by those cultural performances. Also among cultivation of depletion crops just after rice harvest, Italian ryegrass, tall fescue, rape and oats engaged to deplete and reduce Quinclorac residuals for tomato seedling growth, however alfalfa and hairy vetch, relatively susceptible plants to Quinclorac were not promisable.

답후작물(畓後作物)의 Quinclorac 잔류분(殘留分) 영향(影響)(약해(藥害))을 경감(輕減)시킬 목적(目的)으로 수종(數種)의 토양개량제(土壤改良劑) 시용(施用), 경운(耕耘), 유기물(有機物) 시용(施用) 및 사녹비작물(飼綠肥作物)에 의한 수탈처리를 하여 결과(結果)를 비교(比較)하였다. 토양개량제(土壤改良劑) 가운데서는 활성탄(活性炭)이나 부숙퇴비(腐熟堆肥) 및 Perlite가 Quinclorac 잔류분(殘留分)의 흡착(吸着) 및 피복식물(被覆植物)의 활성부흥(活性賦興)에 의하여 유의적(有意的)인 약해경감(藥害輕減)을 시킬 수 있었다. 무경운(無耕耘) 및 무퇴비구(無堆肥區)에 비하여 경운(耕耘) 및 유기물시용(有機物施用)에 의한 약해경감효과(藥害輕減效果)는 인정(認定)되었으나 Quinclorac에 감수성(感受性)이 높은 토마토 및 상추에는 효과(效果)가 크지 않았다. 수탈작물 가운데 이탈리안라이그라스, 톨페스큐, 유채 및 귀리는 Quinclorac의 흡착력(吸着力)과 생장량(生長量)이 커서 후작(後作)인 토마토 생육(生育)을 크게 억제(抑制)시키지 않았으나 Quinclorac에 감수성(感受性)인 얄팔파나 자운영은 Quinclorac 잔류분(殘留分)에 의한 토마토 약해(藥害)를 경감(輕減)시키지 못하는 경향(傾向)이었다.

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