カーバメート化合物の農薬への応用

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タイトル別名
  • Studies on Carbamate Insecticides
  • カーバメート カゴウブツ ノ ノウヤク エ ノ オウヨウ 2 チカン フェニル N-メチルカーバメート ノ ヒメトビウンカ , ツマグロヨコバイ ニ タイスル サッチュウ コウリョク
  • II. Insecticidal Activities of Substituted Phenyl N-methylcarbamates against the Smaller Brown Planthopper, <i>Laodelphax striatellus</i> FALLÉN, and the Green Rice Leafhopper
  • 第2報 置換フェニルN-メチルカーバメートのヒメトビウンカ,ツマグロヨコバイに対する殺虫効力

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Insecticidal activities of 50 substituted phenyl N-methylcarbamates were evaluated with the smaller brown planthopper, and the green rice leafhopper by several testing methods. As preliminary tests, direct, residual, and systemic effects of these compounds against both insects were valued on rice seedlings treated with them. Among these compounds, phenyl N-methylcarbamates substituted with 2-OCH3, 3-OCH3, 2-OCH(CH3)2, 3, 5-di-CH3, 3, 4-di-CH3, and 2-Cl-3, 5-di-CH3 showed high insecticidal activities against both insects. Based on the results of preliminary tests, effects of five compounds against both insects were evaluated by spraying on leaves and by application into the water in the Wagner's pot in which rice plants were cultivated. Of these, 2-chloro-3, 5-dimethylphenyl N-methylcarbamate showed higher insecticidal activities and longer residual effects than the others. The insecticidal activities of 3, 5-dimethylphenyl N-methylcarbamate appeared very rapidly when applied into pot water, but its residual effects were inferior to that of 2-chloro-3, 5-dimethylphenyl N-methylcarbamate.

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