カルボフランの土壌中での残留および稲への吸収と体内移動

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site 被引用文献1件
  • シダラマパァ R.
    Department of Soil Microbiology, The International Rice Research Institute
  • チロール A.
    Department of Soil Microbiology, The International Rice Research Institute
  • 渡辺 巌
    Department of Soil Microbiology, The International Rice Research Institute

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  • Persistence in Soil and Absorption and Movement of Carbofuran in Rice Plants

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The persistence of carbofuran (2, 3-dihydro-2, 2-dimethyl-7-benzofuranyl methylcarbamate) applied to paddy water or the root zone of flooded soil and its influence on absorption and translocation in rice plants were studied under greenhouse conditions. Also, the degradation of carbofuran as affected by soil types and the effect of repeated root zone treatments was investigated under laboratory conditions without rice plants by gas-liquid chromatography, thin-layer chromatography, and the isotope technique.<br>Placement of carbofuran at the root zone of rice resulted in a significant increase in persistence in soil as compared with paddy water application. The absorption and translocation rates of carbofuran in rice plants were more rapid in paddy water application, however, while in the root zone placement those rates increased gradually. Most of the carbofuran absorbed by rice accumulated in the leaves, particularly, the tip portions. A consistently lower concentration was present in the stem portion of the plant.<br>Microbial degradation of carbofuran in three soils was studied; degradation was slowest in soil with the lowest pH.

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