Uso de Trichoderma spp. como promotor de crecimiento de tres especies forestales a nivel de vivero en la provincia de Pichincha.

Abstract

The aim was to determine the effect of Trichoderma harzianum and Trichoderma longibrachiatum as growth promoters in Inga edulis, Schinus molle and Delostoma integrifolium at nursery level. The research was developed in the province of Pichincha with a factorial randomized complete block design with 4 blocks, 15 treatments and 4 replications, where Trichoderma harzianum strain 1 and 2, Trichoderma longibrachiatum strain 1 and 2 were inoculated for each seedling in three times (20 d, 40 d and 60 d), the data of the quality variables (height, dac, number of true leaves, root length, fresh weight,leaf and root dry weight) were recorded at five times (15 d, 30 d, 45 d, 0 d and 75 d). Forthe statistical analysis, the software "R4.1.1" was used, which allowed exploratory analyses where the main results showed that T. harzianum obtained positive effects on the development of vegetative structures in Inga edulis with strain 2, in Schinus molle with strain 1, in Delostoma integrifolium no greater response was recorded. T. longibrachiatum obtained greater vegetative development in Inga edulis with strain 2, inSchinus molle with strain 2, in Delostoma integrifolium with strain 1. It is concluded that Trichoderma longibrachiatum obtained positive effects on plant growth and developmentwith the application of strain 2 in Inga edulis for height, number of true leaves, fresh weight and root dry weight. It is recommended to continue with studies based on the effect of Trichoderma spp. as growth promoter in forest species of our country.