Increased Ca2+ concentrations in the root environment have been suggested to minimize salinity effects on plant growth. In this work, seedlings of two forage sorghum genotypes (Sorghum bicolor (L.) Moench), one salt tolerant (CSF 20) and the other salt sensitive (CSF 18), were exposed to two Na+ (0 and 75 mmol L-1) and two Ca2+ (0.65 and 2.60 mmol L-1) levels in nutrient solution, in a 2 x 2 x 2 factorial design. After seven days of salt treatment, the shoot and root dry matter as well as Cl–, Na+, […]

The leaching of nitrates and the metals K, Ca, Mg, Cd, Cu, Cr, Ni, Pb and Zn were evaluated in an experiment using biosolids amended soils. The experiment was arranged in a completely randomized block design with four treatments: Typic Hapludox with and without biosolids (LA and LA + sludge) and Rhodic Hapludox with and without biosolids (LV and LV + sludge) and four replications. Biosolids were applied to soils every two months in an average rate corresponding to 78 […]