Availability and Plant Uptake of Biosolid-Borne Metals
Table 5
Metal concentrations (means where ) of six plant species grown on sand media amended, without biosolids (Standard), with biosolids, and with phosphate rock†.
Plant
Treatment
Cd
Cr
Cu
Ni
Pb
Zn
Shoot
Root
Shoot
Root
Shoot
Root
Shoot
Root
Shoot
Root
Shoot
Root
mg kg−1
Chickpea
Standard
1.7b
1.0c
1.5b
1.6c
4.9b
9.0b
22b
51b
3.1b
6.2b
15c
38b
Biosolids
14a
34a
3.7a
17a
16a
51a
50a
172a
9.1a
13a
201a
636a
Phosphate rock
1.6b
1.7b
0.8c
2.1b
4.8b
6.8c
3.9c
26c
2.3c
1.5c
25b
36b
Rape
Standard
1.9c
1.1c
1.4c
1.2c
6.5b
11c
8.5b
38b
1.1c
2.6b
30b
34b
Biosolids
16a
23a
4.2a
77a
16a
93a
25a
104a
13a
31a
253a
344a
Phosphate rock
2.5b
2.2b
1.9b
3.6b
3.4c
8.4b
3.9c
36b
3.6b
1.0c
19c
23c
Swiss chard
Standard
1.4c
1.1c
0.9b
1.7c
9.8b
17b
12b
38b
2.4c
5.0b
21b
32b
Biosolids
29a
56a
4.6a
34a
23a
241a
27a
399a
6.0a
13a
335a
676a
Phosphate rock
2.2b
3.6b
1.5b
3.9b
7.8c
13c
4.9c
35b
3.7b
2.8c
22b
33b
Corn
Standard
1.2c
1.6c
1.1b
1.3b
4.9b
18b
12c
24c
1.9b
7.8b
25b
32b
Biosolids
22a
33a
1.3a
45a
12a
58a
41a
242a
11a
21a
226a
479a
Phosphate rock
1.4b
2.5b
0.7c
1.0c
4.5b
8.6a
20b
40b
2.1b
0.2c
22c
18c
Sudan grass
Standard
1.7c
1.1c
1.6a
1.3c
8.1b
11b
21b
21c
1.4c
5.1b
27c
29b
Biosolids
20a
29a
1.7a
26a
12a
88a
65a
184a
7.0a
11a
316a
598a
Phosphate rock
4.9b
3.8b
1.6a
1.8b
9.2b
11b
22b
45b
2.8b
2.2c
51b
29b
Durum wheat
Standard
1.8c
2.0c
2.0b
1.2c
14b
16b
23b
61b
2.3b
2.6b
37b
42b
Biosolids
26a
31a
3.2a
42a
18a
91a
73a
168a
12a
20a
249a
614a
Phosphate rock
2.7b
3.1b
1.3c
1.5b
11c
17b
23b
39c
3.0b
3.2b
36c
39b
The differences of the metal concentrations among the treatments for each plant were tested by one-way ANOVA. In each column of each plant and among the treatments, values followed by same lowercase letter were not significantly different at .