Evaluación de la eficacia de tres métodos de control para tecla (Strymon basilides GEYER) en cultivo establecido de piña (Ananas comosus LINNEO) híbrido MD2.

Abstract

This research aimed to evaluate efficacy of three methods of chemical, biological and ethological control for Tecla (Strymon basilides G.) in an established crop of pineapple hybrid MD-2. The chemical control was based on the product DIAZOL which was applied in the seventh week after flower induction, three applications were made every 15 days in doses of 3 liters/hectare. In the case of biological control, the product DIPPEL based on B. thurigiensis was used, which was applied in the eighth week after flower induction with every eight days and a total of four applications. Finally, for ethological control, red traps were installed in the seventh week after flower induction and removed in the eleventh week post-induction. To determine the efficacy of chemical and biological control, a count of adult Thecla individuals was made before and after of applying the products. For ethological control, dead individuals were counted in the traps every 8 weeks; then the efficacy formula proposed by Sun-Shepard was used and compared with a control. The results showed that the chemical control based on DIAZOL obtained 68% efficacy and the highest benefit, therefore it was the best treatment. On the other hand, the ethological control showed 37% efficacy and it was the treatment with the highest number of individuals after the application of the product. It is concluded that the chemical product DIAZOL offers a better control of Thecla compared to the biological and ethological methods. It is recommended that farmers carry out chemical control in order to control (Strymon basilides) with diazinon at 3 liters/hectare for better production.