Uso de Trichoderma spp. como bioestimulante de crecimiento de lupina (Cytisus monspensulanus), aliso (Alnus acuminata) y acacia (Acacia melanoxylon) en el vivero de la Espoch.

Abstract

The aim of this research was to study the effect of Trichoderma spp. as a biostimulant for the growth of Lupina (Cytisus monspensulanus), Aliso (Alnus acuminata) and Acacia (Acacia melanoxylon) in the ESPOCH nursery. The study included the identification, description and transplanting of forest species. The nursery phase was carried out under an experimental design of Randomized Complete Block Factorial (DBCA) with fifteen treatments and four replicates, factor A, corresponded to the forest species, factor B, to two species of Trichoderma harzianum and Trichoderma longibrachiatum and factor C, to the strains. Three inoculations of different species of Trichoderma spp. were carried out with a concentration of 1x106 cfu/mL. The following variables were evaluated: height (cm), diameter at collar height (mm) at 15, 30, 45, 60 and 75 days after transplanting (dt), number of leaves, root length, fresh mass, leaf dry mass and root dry mass, the latter were evaluated at 75 days, and finally the Dickson Index (DCI) was calculated. The treatment which presented better results were the lupine and alder plants inoculated with Trichoderma longibrachiatum strain 1 and Trichoderma harzianum strain 2 respectively, while the acacia plants presented a greater effect with Trichoderma harzianum strain 2, finding significant differences in the different variables. It is concluded that the inoculation of Trichoderma harzianum strain 1,2 and Trichoderma longibrachiatum strain 1,2 to the forest species in study presented a significant biostimulant effect on the studied variables. It is recommended to replicate this study, but using different doses of Trichoderma spp.