PJB-2025-252
Efficacy of A Newly Formulated Bio-Pesticide DUHC07-BIOGARD In Managing Red Palm Weevil Rhynchophorus ferrugineus Infesting Coconut Palms
IKRAM ULLAH
Abstract
Red palm weevil (RPW) is a serious pest of palms worldwide. In Malaysia, RPW is a common pest of coconut palms (Cocos nucifera) and sago palms (Metroxylon sagu). For the last 12 years since the first detection of the invasive Rhynchophorus ferrugineus in Kelantan state, R. ferrugineus has actively spread to nearly all states in Peninsular Malaysia. Currently, control methods employed to reduce RPW infestations are the baited pheromone traps, trunk injection techniques, and using entomo-pathogenic fungi. Up to date, there is no specific insecticide with both curative and preventive attributes could effectively manage RPW pest because the larvae are concealed within the palm host’s tissues. Hence, this study was done to evaluate the efficacy of a newly formulated bio-rational organic insecticide, DUHC07-BIOGARD in controlling RPW. Study was done in Kampung Baru Kuala Abang, Terengganu. Coconut palms manifesting RPW infestation symptoms were chosen as study subjects. Three different concentrations of DUHC07-BIOGARD solution were chosen, viz., 25%, 50%, and 75%. Four RPW life stages, viz., adults, larvae, adults in cocoons, and larvae in cocoons were observed for mortality percentages according to the applied DUHC07-BIOGARD differential solutions. Adults in cocoons and larvae in cocoons were significantly affected at all solution concentrations, with the highest mortality recorded at both 50% and 75% of solution concentrations. Adults recorded the lowest mortality, but with reduced remaining active individuals in the infested coconut palms after DUHC07-BIOGARD spraying activities.
Keywords: Cocos nucifera, insecticide, life stage, pest, Rhynchophorus ferrugineus.
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