Evaluación de la actividad insecticida de una especie vegetal repelente para el control de cochinillas (PLANOCOCCUS CITRI) en plántulas de Samanea Saman

Abstract

In this study, the identification and evaluation of secondary metabolites of Muyuyo (Cordia lutea) for the biological control of mealybug (Planococcus citri) was carried out. The identification and extraction of these metabolites were carried out through the maceration extraction technique and phytochemical screening tests. By means of extraction by maceration, alcoholic extracts were obtained and subsequently subjected to the corresponding phytochemical tests. On the other hand, in the screening process, all the secondary metabolites present in the extract were identified, which were used in the formulation of a bioinsecticide to control in a controlled manner the population of Planococcus citri in Samanea saman seedlings, which were previously infected with mealybugs. During the trials, the efficacy of a commercial insecticide (Octicom) was compared with that of the new bioproduct at concentrations of 50% and 100% against this pest. An analysis of moisture and chlorophyll loss in infected plants was also carried out to determine the damage caused by Planococcus citri. Treatments lasted two weeks after infection, and the decrease in population, as well as chlorophyll and moisture levels were monitored every four days.