The amount of phytoextracted Cd (g pot−1) was calculated
by multiplying the organ Cd concentration by the organ weight
and it was noted that phytoextracted Cd by S. nigrum in the soil
amended with urea or chicken manure was increased (Figs. 1 and 2;
Tables 2 and 3). The most significant effect was with 100 g kg−1
chicken manure.