@article{10.11648/j.aje.20250902.13,
  author = {Wan Khairul Anuar Wan Ali and Nor Ahya Mahadi and Badrol Hisham Ibrahim and Tajul Ariffin Aziz Yusof},
  title = {The Insecticidal Effects of Pogostemon cablin Against Coconut Leaf Beetle, Brontispa longissima
},
  journal = {American Journal of Entomology},
  volume = {9},
  number = {2},
  pages = {81-86},
  doi = {10.11648/j.aje.20250902.13},
  url = {https://doi.org/10.11648/j.aje.20250902.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aje.20250902.13},
  abstract = {The coconut leaf beetle (Brontispa longissima) is a destructive pest in Malaysia, significantly impacting coconut plantations and leading to economic losses. While chemical pesticides are commonly used for control, their prolonged application raises concerns regarding human health risks, environmental impact, and the development of pesticide resistance. This study evaluates the insecticidal efficacy of Cypersect EC (Cypermethrin 5.5%), Neem oil (1.2% Azadirachtin), and natural biopesticides derived from Pogostemon cablin and Clinacanthus nutans leaf extracts against different developmental stages of B. longissima using a direct dipping method under laboratory conditions. Results indicate that Cypersect EC exhibited the highest mortality rates, significantly outperforming other treatments (P P. cablin extract demonstrated superior insecticidal activity compared to C. nutans, although neither achieved 100% mortality at the highest tested concentration. The study also found that B. longissima larvae were more susceptible to treatments than adult beetles, suggesting that early intervention could enhance control effectiveness. The mode of action analysis suggests that Cypersect EC disrupts neural function by inhibiting cholinesterase activity, whereas biopesticides likely exert toxicity through contact exposure and metabolic disruption. These findings underscore the potential of P. cablin as a sustainable alternative for B. longissima management, reducing dependence on synthetic chemicals while supporting environmentally friendly pest control strategies. Further research is recommended to optimize P. cablin formulations, assess its long-term field efficacy, and explore its integration into integrated pest management (IPM) programs for sustainable coconut cultivation.
},
 year = {2025}
}

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TY  - JOUR
T1  - The Insecticidal Effects of Pogostemon cablin Against Coconut Leaf Beetle, Brontispa longissima

AU  - Wan Khairul Anuar Wan Ali
AU  - Nor Ahya Mahadi
AU  - Badrol Hisham Ibrahim
AU  - Tajul Ariffin Aziz Yusof
Y1  - 2025/05/14
PY  - 2025
N1  - https://doi.org/10.11648/j.aje.20250902.13
DO  - 10.11648/j.aje.20250902.13
T2  - American Journal of Entomology
JF  - American Journal of Entomology
JO  - American Journal of Entomology
SP  - 81
EP  - 86
PB  - Science Publishing Group
SN  - 2640-0537
UR  - https://doi.org/10.11648/j.aje.20250902.13
AB  - The coconut leaf beetle (Brontispa longissima) is a destructive pest in Malaysia, significantly impacting coconut plantations and leading to economic losses. While chemical pesticides are commonly used for control, their prolonged application raises concerns regarding human health risks, environmental impact, and the development of pesticide resistance. This study evaluates the insecticidal efficacy of Cypersect EC (Cypermethrin 5.5%), Neem oil (1.2% Azadirachtin), and natural biopesticides derived from Pogostemon cablin and Clinacanthus nutans leaf extracts against different developmental stages of B. longissima using a direct dipping method under laboratory conditions. Results indicate that Cypersect EC exhibited the highest mortality rates, significantly outperforming other treatments (P P. cablin extract demonstrated superior insecticidal activity compared to C. nutans, although neither achieved 100% mortality at the highest tested concentration. The study also found that B. longissima larvae were more susceptible to treatments than adult beetles, suggesting that early intervention could enhance control effectiveness. The mode of action analysis suggests that Cypersect EC disrupts neural function by inhibiting cholinesterase activity, whereas biopesticides likely exert toxicity through contact exposure and metabolic disruption. These findings underscore the potential of P. cablin as a sustainable alternative for B. longissima management, reducing dependence on synthetic chemicals while supporting environmentally friendly pest control strategies. Further research is recommended to optimize P. cablin formulations, assess its long-term field efficacy, and explore its integration into integrated pest management (IPM) programs for sustainable coconut cultivation.

VL  - 9
IS  - 2
ER  - 

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