Table 4 Biological accumulation coefficients of metal ions in grains and soil contamination levels following treatment with PG organic in the experimental plots.

From: Valorization of rare earth processing byproducts for agriculture usage

Metal

Treatment plot

Notes

As

BAC

0.19

Moderate

I-geo

−2.89

Uncontaminated

CF

0.20

low CF

Cd

BAC

0.75

Moderate

I-geo

−1.38

Uncontaminated

CF

0.58

low CF

Pb

BAC

0.05

Low

I-geo

−0.36

Uncontaminated

CF

0.45

low CF

BAC

0.03

Low

I-geo

−3.86

Uncontaminated

CF

0.10

low CF

Se

BAC

0.00

Weak

I-geo

0.00

Uncontaminated

CF

0.00

low CF

Zn

BAC

0.61

Moderate

I-geo

−3.08

Uncontaminated

CF

0.18

low CF

Mn

BAC

1.76

Active

Igeo

−4.29

Uncontaminated

CF

0.07

low CF

B

BAC

20.88

Active

Igeo

−6.87

Uncontaminated

CF

0.01

low CF

PLI

0.25

Not polluted