Tesis
Evaluación de dos elicitores sintéticos y dos microorganismos para el manejo agroecológico de punta morada de la papa (PMP), variedad superchola.
Fecha
2021-12-16Registro en:
Cuenca Morocho, Jefferson Stalin. (2021). Evaluación de dos elicitores sintéticos y dos microorganismos para el manejo agroecológico de punta morada de la papa (PMP), variedad superchola. Escuela Superior Politécnica de Chimborazo. Riobamba.
Autor
Cuenca Morocho, Jefferson Stalin
Resumen
This investigation aimed to evaluate the effect of synthetic elicitors and microorganisms for the agroecological management of potato purple top (PPT), Superchola variety, in Uyumbicho parish, Mejia. The experiment was carried out under a randomized complete block design (RCBD) with three replications. The variables analyzed were percentage of emergence at 30 and 40 days after sowing (das) in plants of the net plot, vigor status at 60 and 80 das in 20 randomly selected plants, percentage of incidence and severity every 15 days once the first symptom was identified in the whole trial, disease progress curve (AUDPC), population dynamics of Bactericera cockerelli of both eggs and nymphs on 5 random plants, yield of ten random plants in the net plot, where, based on tuber size, they were classified by categories; These data were expressed in kg/ha and then interpolated to t/ha, transmission of phytoplasma to daughter plants through real time PCR tests, spot test through the frying test and economic analysis of the treatments. These variables were subjected to statistical analysis using Infostat 2020 software. The results showed that plants treated with Bacillus subtilis had a 25% impact on nymph populations. The percentage of severity in the treatments with Trichoderma harzianum and K phosphites generated a lower degree of affectation, with 71.67% and 70%; while T. harzianum + B. subtilis, salicylic acid and Bacillus subtilis represented 75.00%, 73.00% and 74.67%, respectively. It was concluded that salicylic acid generated the best yield, obtaining 19.25 t/ha. It is recommended to carry out trials with other solanaceous species, using salicylic acid as a resistance activator.