In vitro efficacy of fungicides for the control of Fusarium spp., the causal agent of root rot in common bean (Phaseolus vulgaris L.)

Abstract

Objective: Currently, common bean cultivation takes place in several regions with high population demand. However, production has been affected by vascular fusariosis, one of the main limiting factors. Chemical control is considered one of the primary alternatives for managing this disease. Design/ Methodology/ Approach: Four fungicides at different concentrations: Verango Prime, Fungi Mix, Vibrance Beans, and Cobrethane WP were evaluated to quantify the percentage of mycelial growth inhibition (MGI) in three Fusarium species: Fusarium nygamai, Fusarium verticillioides, and Fusarium falciforme under in vitro conditions. A completely randomized design with a factorial arrangement and three replications was established. The effectiveness of each fungicide was evaluated based on the percentage of mycelial growth inhibition (MGI) 25 days after inoculating the strain in the culture medium. Results: Tukey’s multiple comparison test (α = 0.05) was performed. Conclusions: The fungicide Verango Prime achieved the highest MGI for the three Fusarium species, with inhibition values of 67.5%, 37%, and 42.5% for F. nygamai, F. verticillioides, and F. falciforme, respectively.