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Essentials Oils (Ocimum gratissimum and Cymbopogon citratus) Against Pseudotheraptus devastans in Coconut Plantations at Marc-Delorme Station in Ivory Coast

Received: 13 September 2022     Accepted: 14 October 2022     Published: 18 October 2022
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Abstract

The bug Pseudotheraptus devastans is one of main insect pests in Ivory Coast. The objective of this study was firstly to evaluate the incidence of Pseudotheraptus devastans attacks on coconut palm plants of two varieties (GOA and NJM), and secondly to study the insecticidal activity of essential oils (Ocimum gratissimum and Cymbopogon citratus) on adults of Pseudotheraptus devastans. Bunches of nuts aged 2 to 4 months showed the highest attack rate in the GOA variety. On other hand, all the nuts aged 1 to 7 months were all attacked in the NJM variety. As for the drop rates, bunches aged 1 to 4 months recorded the highest drop rates for both varieties. It appears that the NJM variety is more sensitive to bites unlike that of GOA which was more tolerant. Mortality rates varied with applied concentrations and observation time. Thus, the essential oils extracted from the two aromatic plants Ocimum gratissimum and Cymbopogon citratus have insecticidal properties on the adults of Pseudotheraptus devastans. This insecticidal effect was highlighted by the LC50, therefore determining the essential oil of Ocimum gratissimum as the most toxic with an LC50 of 1.41% unlike Cymbopognon citratus which recorded a value of 7.76%. These biopesticides can be used to protect coconut palms against insect pests.

Published in American Journal of Entomology (Volume 6, Issue 4)
DOI 10.11648/j.aje.20220604.11
Page(s) 94-101
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Cocos nucifera, Bug Attacks, Fall Rate, Biopesticides

References
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Cite This Article
  • APA Style

    Akpesse Akpa Alexandre Moise, Ochou Germain Elisabeth Cynthia, Diabate Dohouonan, Kedja Bossoma Agnes Monique, Koua Kouakou Herve. (2022). Essentials Oils (Ocimum gratissimum and Cymbopogon citratus) Against Pseudotheraptus devastans in Coconut Plantations at Marc-Delorme Station in Ivory Coast. American Journal of Entomology, 6(4), 94-101. https://doi.org/10.11648/j.aje.20220604.11

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    ACS Style

    Akpesse Akpa Alexandre Moise; Ochou Germain Elisabeth Cynthia; Diabate Dohouonan; Kedja Bossoma Agnes Monique; Koua Kouakou Herve. Essentials Oils (Ocimum gratissimum and Cymbopogon citratus) Against Pseudotheraptus devastans in Coconut Plantations at Marc-Delorme Station in Ivory Coast. Am. J. Entomol. 2022, 6(4), 94-101. doi: 10.11648/j.aje.20220604.11

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    AMA Style

    Akpesse Akpa Alexandre Moise, Ochou Germain Elisabeth Cynthia, Diabate Dohouonan, Kedja Bossoma Agnes Monique, Koua Kouakou Herve. Essentials Oils (Ocimum gratissimum and Cymbopogon citratus) Against Pseudotheraptus devastans in Coconut Plantations at Marc-Delorme Station in Ivory Coast. Am J Entomol. 2022;6(4):94-101. doi: 10.11648/j.aje.20220604.11

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  • @article{10.11648/j.aje.20220604.11,
      author = {Akpesse Akpa Alexandre Moise and Ochou Germain Elisabeth Cynthia and Diabate Dohouonan and Kedja Bossoma Agnes Monique and Koua Kouakou Herve},
      title = {Essentials Oils (Ocimum gratissimum and Cymbopogon citratus) Against Pseudotheraptus devastans in Coconut Plantations at Marc-Delorme Station in Ivory Coast},
      journal = {American Journal of Entomology},
      volume = {6},
      number = {4},
      pages = {94-101},
      doi = {10.11648/j.aje.20220604.11},
      url = {https://doi.org/10.11648/j.aje.20220604.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aje.20220604.11},
      abstract = {The bug Pseudotheraptus devastans is one of main insect pests in Ivory Coast. The objective of this study was firstly to evaluate the incidence of Pseudotheraptus devastans attacks on coconut palm plants of two varieties (GOA and NJM), and secondly to study the insecticidal activity of essential oils (Ocimum gratissimum and Cymbopogon citratus) on adults of Pseudotheraptus devastans. Bunches of nuts aged 2 to 4 months showed the highest attack rate in the GOA variety. On other hand, all the nuts aged 1 to 7 months were all attacked in the NJM variety. As for the drop rates, bunches aged 1 to 4 months recorded the highest drop rates for both varieties. It appears that the NJM variety is more sensitive to bites unlike that of GOA which was more tolerant. Mortality rates varied with applied concentrations and observation time. Thus, the essential oils extracted from the two aromatic plants Ocimum gratissimum and Cymbopogon citratus have insecticidal properties on the adults of Pseudotheraptus devastans. This insecticidal effect was highlighted by the LC50, therefore determining the essential oil of Ocimum gratissimum as the most toxic with an LC50 of 1.41% unlike Cymbopognon citratus which recorded a value of 7.76%. These biopesticides can be used to protect coconut palms against insect pests.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Essentials Oils (Ocimum gratissimum and Cymbopogon citratus) Against Pseudotheraptus devastans in Coconut Plantations at Marc-Delorme Station in Ivory Coast
    AU  - Akpesse Akpa Alexandre Moise
    AU  - Ochou Germain Elisabeth Cynthia
    AU  - Diabate Dohouonan
    AU  - Kedja Bossoma Agnes Monique
    AU  - Koua Kouakou Herve
    Y1  - 2022/10/18
    PY  - 2022
    N1  - https://doi.org/10.11648/j.aje.20220604.11
    DO  - 10.11648/j.aje.20220604.11
    T2  - American Journal of Entomology
    JF  - American Journal of Entomology
    JO  - American Journal of Entomology
    SP  - 94
    EP  - 101
    PB  - Science Publishing Group
    SN  - 2640-0537
    UR  - https://doi.org/10.11648/j.aje.20220604.11
    AB  - The bug Pseudotheraptus devastans is one of main insect pests in Ivory Coast. The objective of this study was firstly to evaluate the incidence of Pseudotheraptus devastans attacks on coconut palm plants of two varieties (GOA and NJM), and secondly to study the insecticidal activity of essential oils (Ocimum gratissimum and Cymbopogon citratus) on adults of Pseudotheraptus devastans. Bunches of nuts aged 2 to 4 months showed the highest attack rate in the GOA variety. On other hand, all the nuts aged 1 to 7 months were all attacked in the NJM variety. As for the drop rates, bunches aged 1 to 4 months recorded the highest drop rates for both varieties. It appears that the NJM variety is more sensitive to bites unlike that of GOA which was more tolerant. Mortality rates varied with applied concentrations and observation time. Thus, the essential oils extracted from the two aromatic plants Ocimum gratissimum and Cymbopogon citratus have insecticidal properties on the adults of Pseudotheraptus devastans. This insecticidal effect was highlighted by the LC50, therefore determining the essential oil of Ocimum gratissimum as the most toxic with an LC50 of 1.41% unlike Cymbopognon citratus which recorded a value of 7.76%. These biopesticides can be used to protect coconut palms against insect pests.
    VL  - 6
    IS  - 4
    ER  - 

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Author Information
  • Formation Unit and Research Biosciences, Felix Houphouet Boigny University, Abidjan, Ivory Coast

  • Entomology Laboratory, Marc Delorme Research Station, National Center for Agricultural Research, Abidjan, Ivory Coast

  • Formation Unit and Research Forestry and Environmental Engineering, University of Man, Man, Ivory Coast

  • Formation Unit and Research Biosciences, Felix Houphouet Boigny University, Abidjan, Ivory Coast

  • Formation Unit and Research Biosciences, Felix Houphouet Boigny University, Abidjan, Ivory Coast

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