Effect of calcium on the uptake of Cd and Pb by amaranth (Amaranthus spp.)

A pot experiment was arranged to study the effect of Calcium on the uptake of Cd and Pb by amaranth (Amaranthus spp.). Cadmium was applied as CdCl2 at the rate of 0, 5, 10 and 15 mg/kg and Lead was applied as PbCO3 at the rate of 0, 10, 20 and 30 mg/kg and Calcium was applied as CaCO3 at the rate 0, 15, 30 and 45 g/kg. It was observed that the yield of Amaranthus spp. was decreased with the single application of cadmium and lead. But when it was applied with calcium, the yield was increased. The reduced uptake of Cd and Pb was observed in Ca treated pots. The response of Ca was observed ameliorative in Cd and Pb contaminated pots.