Evaluación de la fluctuación de Bactericera cockerelli Sulc. y las palomillas en cultivos establecidos de papa (Solanum tuberosum L.) en tres localidades, del cantón Guano.

Abstract

This investigation aimed to evaluate the fluctuation of Bactericera cockerelli (Sulc.) and moths in established potato (Solanum tuberosum L.) in three places of Guano canton, through a weekly monitoring with a total of 10 samplings from July 12 to September 20, an altitudinal gradient (high, medium, low zone) and the same days after planting (DDS) were considered to choose the places to be studied, that is why Saguazo (3 637 masl), Santa Fe de Galán (3 484 masl) and San Andrés (3 027 masl) were chosen. Monochromatic films, one in each cardinal point and an entomological net were used to determine the population fluctuation of adults of the psyllid, for oviposts and nymphs a destructive monitoring of 5 random plants that were analyzed in the GDETERRA laboratory at ESPOCH, traps with sexual pheromones were implemented to count adults of moths. A series design was applied, which is a variant of a completely randomized block design, to know that the largest population of B. cockerelli was found in San Andres with a total of 521 eggs and 220 adults, thenymphal stage was not evidenced. In Saguazo and Santa Fe de Galán no stages of the psyllid were found due to weather conditions. The highest abundance of potato moths was detected in San Andrés with 385 adults of T. solanivora and 437 adults of P. operculella, in Santa Fe de Galán 48 and 2 adults respectively. It is concluded that the potato psyllid and potato moth develop easily in the lower part of the Guano canton due to the weather conditions of the area. It is recommended to continue with this study to get data over a longer period.