International Journal of Tropical Insect Science

, Volume 39, Issue 4, pp 333–339 | Cite as

Effects of Maruca vitrata multi-nucleopolyhedrovirus and neem oil, Azadirachta indica Juss on the eggs of the cowpea pod borer, Maruca vitrata Fabricius (Lepidoptera: Crambidae)

  • F. TraoréEmail author
  • A. Waongo
  • M.N. Ba
  • C. Dabiré
  • A. Sanon
  • M. Tamò
  • B. R. Pittendrigh
Original Research Article


Cowpea, Vigna unguiculata (L.) Walp., is the most cultivated and consumed legume in West Africa and is typically attacked by several insect pests, including Maruca vitrata, leading to reduced yields. This study assessed under laboratory conditions the efficacy of neem oil and M. vitrata multi-nucleopolyhedrovirus (MaviMNPV) against M. vitrata eggs as alternatives to second generation pesticides. Hatching and mortality rates after biopesticide application of neem oil, MaviMNPV, and the two in combination reduced the egg viability by 89%, 84% and 91%, respectively. Moreover, the combination of MaviMNPV and neem oil induced 100% mortality among the hatched larvae, compared to 60% and 100% alone, respectively. Implications for using these biopesticides are discussed within an integrated pest management (IPM) context.


Baculoviruses Biopesticides Cowpea pod borer Eggs Maruca vitrata multi-nucleopolyhedrovirus Neem oil 



This project has been made possible through support provided by the Legumes Innovation Lab, formerly known as the Dry Grains Pulses Collaborative Research Support Program (CRSP), by the Bureau for Economic Growth, Agriculture, and Trade, US Agency for International Development, under the terms of Grant No. EDH-A-00-07-00005. We also thank Théodore Ouédraogo and Simon Tarpidiga of Institut de l’Environnement et de Recherches Agricoles (INERA), Station of Kamboinsé, Burkina Faso, for their technical assistance in data collection.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© African Association of Insect Scientists 2019

Authors and Affiliations

  1. 1.Institut de l’Environnement et de Recherches AgricolesOuagadougouBurkina Faso
  2. 2.International Crops Research Institute for the Semi-Arid TropicsNiameyNiger
  3. 3.Laboratoire d’Entomologie Fondamentale et Appliquée, UFR/SVTUniversité Ouaga I Pr Joseph KI-ZERBOOuagadougouBurkina Faso
  4. 4.International Institute of Tropical AgricultureCotonouBénin
  5. 5.Department of EntomologyMichigan State UniversityEast LansingUSA

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