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Effects of some botanical extracts on the control of major insect pests of okra in the Sudan Savannah Agro-Ecological Zone of Nigeria


B. Yohanna
L. Muhammad
Duna M. Mailafiya

Abstract

Two location trials were conducted in 2018 dry season at the Teaching and Research Farm, Faculty of Agriculture, University of Maiduguri (Unimaid) and demonstration site of the Mohamet Lawan College of Agriculture (MOLCA) Maiduguri to assess the insecticidal potentials of three botanicals and a control in the management of Attractomorpha acutipennis, Amarasca biguttula biguttula, Aphis gossypii and Bemisia tabaci infestation on okra. These treatments were laid out in randomized complete block design (RCBD) replicated three times. Data collected include the number of damaged and undamaged leaves and the number of insect pests. Using Analysis of variance (ANOVA), results showed that the extracts significantly (p < 0.05) reduced the population of the insects and the number of damaged leaves when compared with control in both locations. Plots treated with Balanite aegytiaca extract recorded the lowers population of Attractomorpha acutipennis, A. biguttula biguttula, A. gossypii and B. tabaci. Similarly, Balanite aegytiaca extract recorded the lower leaves damaged than plots treated with Eucalyptus camaldulensis extract in both locations. Among all the treatments evaluated, Plots treated with Balanite aegytiaca extract significantly recorded the least number of A. gossypii and A. biguttula biguttula in both locations. However, plots treated with Balanite aegytiaca extract significantly gave the least number of B. tabaci at MOLCA while plots treated with Eucalyptus camaldulensis extract gave the least number of the insect at UNIMAID. There was no significant difference in the performance of Balanite aegytiaca and Eucalyptus camaldulensis extract. Balanite aegytiaca extract also recorded the least number of damaged leaves in both locations.


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eISSN: 1117-9996