Pesticidal activities of neonicotinoids and diamides on adult yellowish elongate chafer, <i>Heptophylla picea</i> Motschulsky, in various application forms and under equipmental/environmental conditions.

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  • 各種ネオニコチノイド系およびジアミド系薬剤のナガチャコガネ成虫に対する殺虫効果
  • カクシュ ネオニコチノイドケイ オヨビ ジアミドケイ ヤクザイ ノ ナガチャコガネ セイチュウ ニ タイスル サッチュウ コウカ

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Abstract

<p>In search of chemical agents effective for adult control of the yellowish elongate chafer, Heptophylla picea Motschulsky (Coleoptera: Scarabaeidae), pesticidal activities of neonicotinoids and diamide insecticides were tested in multiple application forms and under various equipment/environmental conditions. Laboratory tests of adults which were dipped directly into the solutions of the insecticides or reared on soybean plants sprayed with insecticides both showed high activities of the neonicotinoids, thiamethoxam and clothianidin, suggesting the possibility of effective adult control with oral dosing e.g. seed treatments on a companion plant. Other neonicotinoids such as dinotefuran were less active to the adult chafers. As for the diamide insecticides, cyclaniliprole and cyantraniliprole were comparable to fenitrothion (MEP) in their oral toxicities, but scarcely showed contact toxicity in the rearing tests; the effective application forms of those chemicals must be surveyed in future studies.</p>

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