engleski

Comparative Efficacy of Classical and Biorational Insecticides on Sugar Beet Weevil, Bothynoderes punctiventris Germar (Coleoptera: Curculionidae)

The contact and ingestion activity and the potential of the insecticide spinosad for the control of sugar beet weevil were evaluated and compared with commercially used insecticides lambda-cyhalothrin and chlorpyriphos + cyper - methrin. Results of three laboratory trials proved very good efficacy of spinosad applied at the dose of 72 g a.i./ha. Its efficacy was similar to chlorpyriphos + cypermethrin and significantly higher than that of lambda- cyhalothrin. Due to its favourable eco- toxicological properties and good ingestion activity, spinosad is a good candidate to be introduced in the integrated pest management strategy against beet weevil.

Bothynoderes punctiventris ; biorational insecticides ; contact activity ; ingestion activity ; spinosad ; sugar beet

Supported by the Croatian Science Foundation, Grants No. 09/23 and IPA and No. 2007/HR/16IPO/001-040511.