Evaluación de trichoderma spp en tres variedades de maní (arachis hypogaea l.).

Abstract

The peanut crop is of minimal agricultural interest in Ecuador due to its susceptibility to fungal diseases, the application of microorganisms of the genus Trichoderma efficiently controls other species of pathogens. The study was carried out in the Plant Health laboratory and the experimental area of the "Santa Inés" farm of the Faculty of Agricultural Sciences at the Technical University of Machala. A completely randomized block design was used, with 33 treatments resulting from the use of four strains of Trichoderma spp., two concentrations (10-11 and 10-12 spores) on three varieties of peanut (INIAP 380, 381 and 382), including three controls, with three replicates obtaining 99 UE with 12 plants each. The variables were: plant height (cm), main branches/plant, 100 seed weight (g), nodule weight (g), number of seeds/pod, number of seeds/plant, number of pods/plant, seed weight per plant, rust incidence and white mold incidence. The results obtained indicate that the application of Trichoderma spp. increased the production in all the varieties and decreased the incidence of the diseases: rust (Puccinia arachidis) and white mold (Sclerotinia sclerotiorum) in comparison to the controls.