Plant extracts: alternative control Colaspis sp. (Coleoptera: Chrysomelidae) in banana cv. Harton.

Abstract

Bananas, the main export goods of Colombia, present various technical challenges such as the control of the turtle beetle (Colaspis sp.), which causes 33% of economic losses. Since quality standards do not allow chemical residues to be present in the fruits, this study evaluated the effect of plant extracts for the management of the turtle beetle in a commercial crop from the municipality of Los Córdobas. The severity of the attack was evaluated from the number of gnawing in fruit and the incidence in treated bunches and fruits. The extracts used were salvia Salvia officinalis L., anamú Petiveria alliacea L., basil Ocimum basilicum L., garlic Allium sativum L. and chili pepper Capsicum annuum sprinkled with a planter type bomb on commercial polyethylene bags; leaving exposed for one hour to ensure adhesion. A design was completely randomized with seven treatments, three repetitions, a relative witness (bag without plant extract) and an absolute control (unbagged bunches) recording the severity of the damage. The results showed that the fruits from bagged clusters had lower severity than the fruits of not bagged clusters. Treatments consisting of bags impregnated with garlic extract had lower incidence and severity, a decrease of 98% in damage. It could be concluded that the garlic extract repellent showed the best results to prevent fruit damage. Treatments where Albaca, Chili Pepper, Salvia and Anamú ware applied showed higher incidence and fruit damage.

Keywords

• extracts
• sseverity
• damage
• quality
• pocketed
• colaspis sp