Evaluation Of Neem Seed Water Extract, Biobit And Karate On Insect Abundance And Yield Of Local Garden Egg (Solanvm Integrifolium L.)

Owusu-Ansah Fred 122 PAGES (20720 WORDS) Entomology Thesis
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ABSTRACT The effect of Neem Seed Water Extract (NSWE) on insects and growth performance of eggplant (local garden egg) was evaluated in the field from June to October 1998 at Ekoso in the Eastern region, Ghana. The extract was applied at the rate of 75 g of seed per litre of water and compared with a standard insecticide (Karate), a registered Bacillus thuringiensis Berl. (Biobit) and water only as control. The effect of each treatment on leaf, shoot and fruit damage caused by defoliators, shoot, bud, and fruit borers were determined. The influence of the treatments on plant biomass and other vegetative growth indices such as plant height, plant girth, number of functional leaves and branches per plant, flower production as well as fruit yield were also assessed. Water traps were used to monitor the effects of the various treatments on the abundance of insects associated with the crop. Economic benefits of each pesticide-use programme based on crop value, cost of pest control and net profits were determined. Karate and NSWE treatments significantly (P

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