Dry Weight (Grams) of Plant Contol Samples and Plant |
Samples Grown in the Soils Enriched in Metal Concen- |
trations of Zn, Cd, and
Pb. |
Samples Shown in Red Represent Plants Grown in Soils |
in
500 ppm metal , Those in Green, 300 ppm, |
and Those in Blue, 100 ppm |
Dry weight in Grams |
|
|