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Chemical and Biological Technologies in Agriculture

Table 4 Heavy metal risk assessment results in soybean soil

From: Use of Serendipita indica to improve soybean growth, physiological properties, and soil enzymatic activities under different Cd concentrations

Fungal treatment

Cd treatment

Soil Cd (mg·kg−1)

Single factor pollution index

Farmland soil pollution index

Concentration risk of farmland soil pollution

− S

NH

0.39 ± 0.05 e

0.4

0.27

0.55

 

LH

3.11 ± 0.28 d

3.21

2.59

1.74

 

MH

5.92 ± 0.27 b

6.1

4.03

2.41

 

HH

7.65 ± 0.97 a

7.89

4.51

2.73

 + S

NH

0.37 ± 0.07 e

0.38

0.22

0.55

 

LH

2.85 ± 0.37 d

2.94

2.55

1.66

 

MH

4.64 ± 0.65 c

4.78

3.07

2.13

 

HH

6.92 ± 1.01 b

7.13

3.82

2.60

  1. The value represents the mean ± SE (n ≥ 3). The same letter in the same column of data in the table indicates significant no differences among treatments using Duncan’s Multiple Range Test
  2. − S: non-inoculation (control), + S S. indica inoculation, NH Cd 0 mg·kg−1 treatment, LH Cd 3 mg·kg−1 treatment, MH Cd 6 mg·kg−1 treatment, HH Cd 9 mg·kg−1 treatment
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