Chagyo Kenkyu Hokoku (Tea Research Journal)
Online ISSN : 1883-941X
Print ISSN : 0366-6190
ISSN-L : 0366-6190
Original Article
Pesticidal activities of neonicotinoids and diamides on adult yellowish elongate chafer, Heptophylla picea Motschulsky, in various application forms and under equipmental/environmental conditions.
Masaaki SudoAtsushi KasaiYasusuhi SatoHiroshi Yorozuya
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2019 Volume 2019 Issue 127 Pages 11-18

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Abstract

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.

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© 2019 Japanese Society of Tea Science and Technology
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