Effect of selected insecticides on the survival of oil palm weevil, elaeidobius kamerunicus (Coleoptera: Curculionidae)

Kamal, Zulaikha (2014) Effect of selected insecticides on the survival of oil palm weevil, elaeidobius kamerunicus (Coleoptera: Curculionidae). [Project Paper] (Submitted)

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Abstract

The effect of selected insecticides, namely Bacillus thruringiensis, fipronil, cypermethrin, flubendiamide, pyridalyl and dinotefuran, on the oil palm pollinator, Elaeidobius kamerunicus, was studied. The oil palm pollinating weevils were tteated by topical application and spikelet dipping method. Three different concentrations of each insecticide were prepared ranging from 170 mg a.i. to 510 mg a.i. for Bt, 5.5 mg a.i. to 16.5 mg a.i. for cypermethrin and 5.0 mg a.i. to 15.0 mg a.i. for fipronil. The range of concentration for pyridalyl was 11.66 mg a.i. to 34.98 mg a.i., for flubendiamide was 4.0 mg a.i. to 12.0 mg a.i. and for dinotefuran was 10.0 mg a.i. to 30.0 mg a.i.. Treatment Bt, flubendiamide and pyridalyl were less toxic on the adults oE. kamerunicus as about 96% survival rate were observed ofter topical application at recommended dosage, as compared to cypermethrin, fipronil and dinotefuran which were highly toxic to the pollinator as the killed 100% of the weevils at as early as first day after treatment. Application of Bt and flubendiamide by spikelets dipping method at the recommened concentration led to 55% and 65% survivability of the oil palm pollinator, respectively. In treatments with dinotefuran, pyridalyl, cypermethrin and fipronil at recommended dossage, no oil palm weevils emerged after treated with these insecticides. The laboratory study showed tat Bt and flubendiamide were safe for oil palm weevils, hence they could be recommended alternative insecticides for regulating the bunch moth population in oil palm plantation.

Item Type:	Project Paper
Subjects:	S Agriculture > S Agriculture (General)
Faculty:	Faculty of Agriculture and Food Sciences
Depositing User:	Mr. Mohd Faizal Jabat
Date Deposited:	11 May 2026 01:44
Last Modified:	11 May 2026 01:44
URI:	http://psaspb.upm.edu.my/id/eprint/2749

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