ISSN: 2474-8846
Authors: Nakano O, Barros LS* and Morandi V
In the world, Cosmopolites sordidus is a major pest in banana orchards. For its control, several management strategies have been used. However, it is important to add other control strategies to the integrated management of this pest. In this sense, this study evaluated the sterilant effect of some physiologic insecticides to C. sordidus. In order to accomplish this, a completely randomized experimental design was conducted under laboratory conditions. Five treatments (insecticides) and four repetitions (insects) were used for this proposed. The insecticides and concentrations were: abamectin at 1.5 and 3.0 ml L-1; lufenuron at 0.5 and 1.0 ml L-1 and water (check). Forty-eight fertilized females (12 insects x 4 repetitions) were used per treatment. Banana pseudo stem baits were immersed in1 liter of the solution for 10 minutes and after offered for C. Sordidus female adults. One week after treatment of the insects, they were transferred to untreated baits for evaluation. Number of C. sordidus eggs, fertilized eggs and egg feasibility was subjected to statistical analysis. The insecticide sterilant efficacy was calculated according to Henderson and Tilton formula. Both doses of lufenuron have satisfactory efficient sterilant effects on C. sordisus eggs, showing sterilant effects between 87.93 and 90.48%. Unlike this, abamectin all concentrations did not showed same results. C. sordidus can be efficiently controlled with both lufenuron concentrations when infused on baits prepared using the banana tree own pseudo stem and it proves to be a good strategy to corm weevil management.
Keywords: Banana Rhizome Weevil; Insect Growth Regulators; Chemosterilants; Fruit Crops
