Moroccan Journal of Agricultural and Veterinary Sciences

Vol. 11 No. 4 (2023): (December 2023)
Crop Production and Environment

Effects of aqueous extracts of castor bean (Ricinus communis) and neem (Azadiracta indica) on pest pressure of cowpea (Vigna unguiculata)

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  • Charles BADINENGANYI,
  • John TSHIBAMBA MUKENDI,
  • Jean Pierre TSHILUMBA KABEYA,
  • Evelyne MADILO FUAMBA,
  • Jérémie MUEPU,
  • Baudouin NTUMBA MALABA
Charles BADINENGANYI Faculté des sciences agronomiques, Université officielle de Mbujimayi, RD Congo
John TSHIBAMBA MUKENDI Faculté des sciences agronomiques, Université officielle de Mbujimayi, RD Congo
Jean Pierre TSHILUMBA KABEYA Faculté des sciences agronomiques, Université officielle de Mbujimayi, RD Congo
Evelyne MADILO FUAMBA Faculté des sciences agronomiques, Université officielle de Mbujimayi, RD Congo
Jérémie MUEPU Faculté des sciences agronomiques, Université officielle de Mbujimayi, RD Congo
Baudouin NTUMBA MALABA Faculté des sciences agronomiques, Université officielle de Mbujimayi, RD Congo

Published 2023-12-15

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Abstract

With the aim of valorizing plant species with insecticidal properties and seeking alternative methods to the use of chemical insecticides, it is imperative to develop bio-pesticides that are effective, less costly, accessible, easy for farmers to handle and respectful of human health and the environment. For this purpose, this study set out to determine the efficiency of aqueous extracts of castor bean (Ricinus communis L.) and Neem seeds (Azadiracta indica L.) on cowpea crop pests under the ecological conditions of Mbujimayi (DRC). A completely randomized experimental design was adopted, with a total area of 180 m², consisting of three blocks and four treatments, namely, T0 (control), T1 (Deltamethrin (1.11 liter/m²), T2 (Neem seed extract (1.11 liter/m²) and T3 (Ricin seed extract (1.11 liter/m²). After application of Deltamethrin, aqueous Neem extracts and castor oil, we noted that the number insects of Ootheca mutabilis, Maruca vitrata, Aneplocnemis curvipes and Riptortus dentipes varied, and the analysis of variance showed significant differences between treatments compared with the insects counts before application of the phytosanitary products.

Keywords: Biopesticide, castor oil, neem, cowpea, Mbujimayi, DRC

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References