Two experiments were conducted at the Federal University of Grande Dourados, in order to evaluate the efficiency of fungicides, Carboxin + Thiram and Carbendazin + Thiram at different doses on seed health and its effect on seedling vigor. The fungicides, Carboxin + Thiram was evaluated at doses of 350, 450 and 550 mL and Carbendazin + Thiram at doses of 200, 300 and 400 mL, the respective doses for 100 kg of seeds. The experimental design for both trials was completely randomized design with 7 treatments, 10 repetitions for the test of sanity and 5 for analysis of the vigor. We analyzed the percentage incidence of fungi in seed and seedling vigor, through a field emergence, index of emergence speed and plant height. We report the incidence of Aspergillus sp., Penicillium sp., Fusarium sp. Phomopsis sp. and Rhizopus sp., and Carboxin + Thiram at a dose of 550 ml, the treatment most effective in controlling pathogens. For field emergence, both fungicides were effective, providing increases ranging from 48.9 to 97.4% of emergency. The index of emergence speed was favored by treatments with Carboxin + Thiram at a dose of 550 mL and Carbendazin + Thiram at doses of 300 and 400 ml. It was found that Fusarium sp. was the pathogen with the highest percentage of incidence on seeds, however, the highest correlation with the low emergence were observed by the presence of Penicillium sp. and Phomopsis sp.
Jatropha curcas; seed treatment; Carboxin + Thiram; Carbendazin + Thiram