サンゴジュハムシの防除薬剤

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  • サンゴジュハムシ ノ ボウジョ ヤクザイ

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サンゴジュハムシの被害防止対策は, 基本的には耕種的防除を加味した総合防除によって行うべきものと考えるが, 被害が激しく緊急に防除しなければならない場合を考慮して, 市販薬剤の中から人畜に対する毒性の割合に小さい10薬剤について幼虫と成虫の摂食防止効果を検討した.その結果, 幼虫・成虫両者の被害防止に有効な薬剤はfenvalerate, isoxathion, fenitrothion, phenthoateであった.Carbarylは幼虫の被害防止には高い効果を有するが成虫の被害防止にはやや効果が劣り, malathionは幼虫に対しては効果は低いが, 成虫の被害防止効果は高かった.

During the period of 1984 and 1985, effectiveness of 10 commonly-used insecticides was investigated against eggs, larvae and adults of the Viburnum leaf beetle, Pyrrhalta humeralis (CHEN). These insecticides were selected for the observation due to their relatively low mammalian toxicity with a minimum environmental impact. Each insecticide was tested from the viewpoint of its contact (and/or through feedings) and residual toxicities against beetles as well as the repellent effect of feeding behaviour. Results indicated that insecticides showing a good control against damages by both larvae and adults were fenvalerate, isoxathion, fenitrothion and phenthoate. Carbaryl and malathion had a high ability to prevent larval and adult damages, respectively, but they failed to show similar effectiveness against the other stages.

source:The technical bulletin of Faculty of Horticulture, Chiba University

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