Evaluación de tres extractos vegetales para el control de ácaros (Tetranychus urticae Koch) en hojas de fresa (Fragaria x annassa)

Abstract

The research was carried out to evaluate three vegetable extracts of chili pepper, black cabuya and avocado, for the control of the Tetranychus urticae Koch mite on strawberry leaves (Fragaria x annassa) which was carried out in the Soil Laboratories of Public Service and Entomology belonging to the Technical University of Ambato, Faculty of Agricultural Sciences, located in the Cevallos canton, Tungurahua province. For the evaluation, a completely randomized block design (DBCA) with three repetitions in concentrations of 0.2%, 0.4%, 0.8% and 1.6% was applied, the Tukey significance tests were carried out at 5%, where obtained the following results: for the variable mortality rate, the extract with the highest efficiency was the pepper extract with the application dose of 1.6%, producing a 54% mortality rate. These data were taken 4 days after application. The data taken after 14 days of the application led to determine the fertility and longevity of the female T. urticae Koch. For the determination of fertility, the 1.6% cabuya extract was better, reducing the oviposition rate by up to 94.47%.