Evaluación de métodos alternativos de control de Paratrioza (Bactericera cockerelli Sulc.) en cultivo de papa (Solanum tuberosum L.) en San Luis, Riobamba, Chimborazo.

Abstract

The present investigation aimed to evaluate alternative methods for the control of (Bactericera cockerelli Sulc.) in potato (Solanum tuberosum L.) in Guaslan, Riobamba canton, Chimborazo province. A randomized complete block design with five treatments and three replicates was used Kaolin, Metarhizium anisopliae, Neem extract and an absolute control. Six applications were made at 34, 48, 62, 83, 97 and 111 days after sowing; foliar sampling for insect counting was carried out 48 hours after each application. For the evaluation of the effect of the treatments, three plants were taken at random from each experimental unit and from each plant three leaflets were taken, the number of eggs, nymphs and adults were determined. A visual assessment of the leaflets of each treatment was carried out to evaluate phytotoxicity. Harvesting was carried out at five months and the tubers were classified according to size to determine the yield. An ANOVA was applied for the statistical analysis, and Tukey's test was used as a priori test. As a result, the effect of the treatments applied for the control of paratrioza (Bactericera cockerelli Sulc) on the total accumulation of eggs, nymphs and adults was found. The best treatment was the chemical package because it registered the lowest pest population in the crop. The treatments used showed no symptoms of phytotoxicity in the plants. The chemical package showed the best yield with an average of 91 kg/plot. It is concluded that the rotation of insecticides will control the pest, and the benefit/cost analysis showed that it is the only viable treatment of the experiments in this study for potato (Solanum tuberosum L.) production in Guaslan, so it is recommended to use it.