Management module for banana pseudostem weevil Odoiporus longicollis oliver

Banana crop is affected by the pseudostem weevil (Odoiporus longicollis), which damages the pseudostem and causes the plant to collapse. This weevil causes yield losses of between 10% and 90%. The study was conducted on the evaluation of various management modules for pseudo stem weevil in banana (var. Red Banana) in farmer's fields with four treatments and seven replications in an RBD design. Treatments were imposed on 5^th, 6^th and 7th month after planting which includes spraying of cassava leaf based biopesticides (Nanma) in the pseudostem, filling the leaf axil with Heterorhabditis (EPN), spraying of Chlorpyriphos 20EC in the pseudo stem. Percentage of plants affected and extent of pseudostem borer infestation, individual bunch weight were measured. In plants treated with the biopesticide based on cassava leaves (Nanma), crop damage was found to be 2.0%; in contrast, EPN showed 13.0% damage, Chlorophyriphos showed 15.2% damage, and untreated control plants showed 35.5% damage. The Weevil infestation was 2.4 % in cassava leaf based biopesticides (Nanma) treatment followed by 8.60% in EPN treatment and 14.60 per cent in Chlorophyriphos treatment and 36.60 per cent in untreated control. The average increase in bunch weight was 26.16 percent for plants treated with the cassava leaf-based biopesticides (Nanma), 21.52 percent for EPN, and 18.60 percent for Chlorophyriphos when compared to untreated control plants. The study revealed that the spraying of cassava leaf based biopesticides reduced the incidence of pseudostem weevil with higher yield.