AGRIVITA, Journal of Agricultural Science
Vol 38, No 3 (2016): OCTOBER

INSECTICIDAL EVALUATION OF Bridelia micrantha AND Dalbergia lactea AQUEOUS EXTRACTS FOR THE CONTROL OF Podagrica uniforma (Jacoby) AND Nisotra dilecta (Jacoby) (COLEOPTERA: CHYSOMELIDAE) INFESTATION ON OKRA

Jacobs Mobolade Adesina (Rufus Giwa Polytechnic, Department of Crop, Soil & Pest Management Technology P. M. B. 1019 Owo Ondo State Nigeria)
Kayode David Ileke (Department of Environmental Biology and Fisheries, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria.)
Rajashekar Yallappa (Insect Chemical Ecology Laboratory, Institute of Bioresources and Sustainable Development, Takyelpat, Imphal – 795001, Manipur, India.)
Thomas Inomisan Ofuya (Vice Chancellor’s Office, Wellspring University, Benin City, Edo State, Nigeria. Department of Crop, Soil and Pest Management, Federal University of Technology, P. M. B. 704, Akure, Ondo State, Nigeria)



Article Info

Publish Date
02 Aug 2016

Abstract

Insect pest infestation is a major factor militating against okra production and farmers generally adopt synthetic insecticides for its management. A field trial was undertaken to evaluate the insecticidal potency of Bridelia micrantha and Dalbergia lactea for the management of Podagrica uniforma (Jacoby) and Nisotra dilecta (Jacoby) insect pest of okra (Abelmoschus esculentus L. Moench). The treatments consisted of aqueous leaf extracts of Bridelia micrantha and Dalbergia lactea and Cypermethrin as check; laid out in Randomized Complete Block Design and repli-cated three times. Data was collected on insect population before treatment application and 3 days after spraying of insecticides at 28, 35, 42, 56 days after planting (DAP). Yield parameters data collected were number of fruits and fruit weight. Results obtained showed that the plant extracts exhibited effectiveness in reducing the insect population and improved okra fruit yield compared to Cypermethrin. The order of effectiveness in decreasing sequence was found to be Cypermethrin ˃ D. lacteal ˃ B. micrantha. D. lacteal and B. micrantha crude extracts could be explored as promising insecticidal agents to provide valuable alternatives to chemical control of insect infestation on okra. Further study is recommended to determine the chemical constituents responsible for the plant insecticidal activity.

Copyrights © 2016






Journal Info

Abbrev

AGRIVITA

Publisher

Subject

Agriculture, Biological Sciences & Forestry

Description

AGRIVITA Journal of Agricultural Science is a peer-reviewed, scientific journal published by Faculty of Agriculture Universitas Brawijaya Indonesia in collaboration with Indonesian Agronomy Association (PERAGI). The aims of the journal are to publish and disseminate high quality, original research ...