A greenhouse experiment was carried out to evaluate the effect of the Ca/Mg ratio in the cation exchange capacity on common bean growth. Samples of a typic ferric aluminum Red Latosol (LVat) and a psamitic dystrophic Red Latosol (LVdp), both Haplortox (U.S. Soil Taxonomy) in pots containing 3.5 dm3 of soil were treated with Ca:Mg ratios of 1/2, 1, 2, 4, 6 and 8. The experiment was arranged in a completely randomized block design with six replications. Three replications were harvested […]