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ABSTRACT
Synthetic pesticides have become environmentally unfriendly in pest control and management over the years. Field pests are known to compromise yield and productivity of crop plants.. The study was carried out to investigate the biopotentials of aqueous leaf extracts of Sunflower (Tithonia diversifolia (Hemsl) A. Gray) and Soursop (Annona muricata L.) on the field pest of okra plant (Abelmoschus esculentus (L.) Moench.). Two varieties of okra seeds were obtained from NIHORT, Ibadan, Nigeria. Leaves of Sunflower and Soursop plants were obtained from NIFOR and Iyowa community, all along Benin – Akure express road. The experiment was laid out in a complete randomized design with two treatments (plants) and three replications. The concentrations of aqueous extracts prepared were 10 and 15% w/v of each plant. The application of leaf extracts was carried out six weeks after planting and in the evening. The leaf miners were observed to have infested the okra plants, boring holes on the lamina. Plants that were treated with the extracts produced whole leaves that were unaffected. The reduction of pests were observed after treatment with the different concentrations in both varieties of okra. One of the pest recorded was identified as flea beetle belonging to the order Coleoptera.
