Abstract
Experiments were designed to evaluate the usefulness of antifungal agents and streptomycin for recovering low densities of rhizobia inoculated into tropical soils. The results showed that yeast-mannitol agar (pH 6.0) containing 500 mug of streptomycin, 400 mug of cycloheximide and 50 mug of benomyl or chlorothalonil per ml was the best selective medium.