Potential of Native Trichoderma Strains as Antagonists for the Control of Fungal Wood Pathologies in Young Grapevine Plants

Neofusicoccum parvum and Rhizoctonia solani are fungal pathogens with an increasing incidence in young grapevine plants. In this study, the antagonistic potential of some strains genus Trichoderma isolated from against these was investigated at laboratory greenhouse levels. In-plate confrontation assays showed that selected could inhibit mycelial growth both taxa, being more effective N. parvum. vivo assays, biocontrol activity mentioned pathogens, when applied either simultaneously or successively, tested on grafted plants seedlings germinated seed. The effectiveness treatments evaluated by comparing biomass weight vascular rot lengths data. seedling trials, successive resulted higher root development a lower colonization rate especially R. solani. plants, disparity observed parvum: simultaneous aerial biomass, but necrosis. Against solani, were clearly effective, length values obtained data suggest use spp. isolates can constitute alternative to conventional fungicides control certain wood diseases.