Evaluación de la fluctuación de Bactericera cockerelli Sulc. y las palomillas en cultivos establecidos de Solanum tuberosum L. en Mulanleo, Chiquikahua, Yatzaputzan, Tungurahua.

Abstract

The objective of this research work was to evaluate the fluctuation of Bactericera cockerelli Sulc., and moths in established crops of Solanum tuberosum L. in Mulanleo, Chiquikahua, Yatzaputzan of Tungurahua province. A Randomized Complete Block Design (RCBD) was used, with three treatments and five replicates each, with a 10-week follow-up to determine the egg, nymph, and paratrioza adult fluctuation. Six plants were taken at random from each of the four compound leaves collected per experimental unit, which were analyzed in the laboratory of Horticulture, Agronomy School, Espoch. Yellow monochromatic traps were used to count adults, and pheromone traps specifically for Tecia solanivora and Phthorimaea operculella were used for moths. A visual sampling of the crop plants for entomopathogens was carried out to locate bacteria and fungi that cause diseases of Bactericera cockerelli Sulc. In the Chiquikahua locality, there were more eggs and adults, with 31 and 12 individuals, in Mulanleo. There were 12 nymphs, the highest number of individuals found in the three study localities in Yatzaputzan, and there were fewer stages locality with the lowest presence of Bactericera cockerelli Sulc. It was concluded that the abundance of Tecia solanivora moths was 12 individuals and Phthorimaea operculella with 29 individuals, and none of the entomopathogens were found in the sites studied. It is recommended to establish the population peaks of Tecia solanivora y Phthorimaea operculella with constant monitoring in the Chiquikahua locality where it was detected the highest presence of the moths.