Resumen en inglés

Eucalyptus is a plant that is found all over the world, due to its rapid growth, this is a kind of industrial use for the production of paper, wood, obtaining chemicals and as an ornament. In nursery eucalyptus (Eucalyptus urograndis) production, the death of seedlings associated with the pathogens Rhizoctonia spp. and Cylindrocladium spp. causing losses by causing seedling death. The objective of this research was to evaluate the effectiveness of two treatments to the production substrate of eucalyptus (Eucalyptus urograndis) for the management of Rhizoctonia sp. and Cylindrocladium sp., for 55 days in the months of November and December 2019 in the La Ribera nursery located in Jaraquiel (Montería-Córdoba). Two treatments were evaluated (Solarization and solarization plus Dazomet). Before being treated, the substrates were inoculated with wood segments previously colonized with Rhizoctonia and Cylindrocladium, which were buried in the substrate at 3 different depths (5, 10 and 15 cm). At 15, 30 and 55 days after starting the experiment, samples were taken from both the substrate and the timbers colonized with Rhizoctonia and Cylindrocladium and the effect of the treatments with the presence or absence of the phytopathogens that affect eucalyptus was determined. The incidence of pathogens was evaluated with dichotomous variables, values 0 = absence and 1 = presence. A non-parametric statistic was performed where ranges were assigned to the values which were analyzed under a CA design in a 2x3x3 factorial arrangement; 2 = isolated; 3 depths and 3 treatments, with 5 repetitions, the results showed total control for Cylindrocladium spp. and Rhizoctonia spp. in the solarization treatment plus Dazomet, both in the substrate and in the timbers colonized with these fungi. In the free exposure and solarization treatments, there was no control of the phytopathogens inoculated on the 17 substrates. It is concluded that for treatment of the substrate the