Evaluación de la fluctuación de (Bactericera cockerelli Sulc.). y las palomillas en cultivos establecidos de papa (solanum tuberosum l.) en Yayulihui, Rumipamba e Ipolongo, Tungurahua.

Abstract

The objective of this research work was to evaluate the fluctuation of Bactericera cockerelli Su/e. and moths in established potato crops (So/anum tuberosum L.) in Yayulihui, Rumipamba, and Ipolongo, Tungurahua, through 5 biweekly samplings for B. cockerelli and ten weekly samplings for moths, from July 26 to October 23, 2021. It was selected three zones with different altitudinal ranges, a high zone (3356 m.a.s.l.), a medium zone (3204 m.a.s.l.), anda low zone (3018 m.a.s.l.), which were in the localities of Yayulihui, Rumipamba, and Ipolongo. It monitored the psyllid population in egg and nymph stages by applying the oviposition and destructive methods, for which plants were randomly selected and carefully observed with a magnifying glass. Toe adult population was estimated using the flaming method with an entomological jama and yellow chromatic traps located in the center of each lot. Finally, it was determined the fluctuation of the potato moth population by placing traps with sex pheromones for each species. For the statistical analysis, the Tuckey test was used for eggs, nymphs, and adults of the psyllid in the five samplings carried out within the localities, with the result that there were no significant differences. On the other hand, the highest moth population was granted to Tecia solanivora as opposed to Phthorimaea operculel/a and Symmestrischema tangolias. It was concluded that in the three

study localities, there is no significance for eggs, nymphs, and adults of paratrioza and that the largest moth population was assigned to Tecia solanivora. For this reason, it is recommeoded to cooduct research trials to obtain more precise knowledge of the population variatioo of these pests.