Table 5: Metal concentrations (means where ) of six plant species grown on sand media amended, without biosolids (Standard), with biosolids, and with phosphate rock.

PlantTreatmentCdCrCuNiPbZn
ShootRootShootRootShootRootShootRootShootRootShootRoot
mg kg−1

ChickpeaStandard1.7b1.0c1.5b1.6c4.9b9.0b22b51b3.1b6.2b15c38b
Biosolids14a34a3.7a17a16a51a50a172a9.1a13a201a636a
Phosphate rock1.6b1.7b0.8c2.1b4.8b6.8c3.9c26c2.3c1.5c25b36b

RapeStandard1.9c1.1c1.4c1.2c6.5b11c8.5b38b1.1c2.6b30b34b
Biosolids16a23a4.2a77a16a93a25a104a13a31a253a344a
Phosphate rock2.5b2.2b1.9b3.6b3.4c8.4b3.9c36b3.6b1.0c19c23c

Swiss chardStandard1.4c1.1c0.9b1.7c9.8b17b12b38b2.4c5.0b21b32b
Biosolids29a56a4.6a34a23a241a27a399a6.0a13a335a676a
Phosphate rock2.2b3.6b1.5b3.9b7.8c13c4.9c35b3.7b2.8c22b33b

CornStandard1.2c1.6c1.1b1.3b4.9b18b12c24c1.9b7.8b25b32b
Biosolids22a33a1.3a45a12a58a41a242a11a21a226a479a
Phosphate rock1.4b2.5b0.7c1.0c4.5b8.6a20b40b2.1b0.2c22c18c

Sudan grassStandard1.7c1.1c1.6a1.3c8.1b11b21b21c1.4c5.1b27c29b
Biosolids20a29a1.7a26a12a88a65a184a7.0a11a316a598a
Phosphate rock4.9b3.8b1.6a1.8b9.2b11b22b45b2.8b2.2c51b29b

Durum wheatStandard1.8c2.0c2.0b1.2c14b16b23b61b2.3b2.6b37b42b
Biosolids26a31a3.2a42a18a91a73a168a12a20a249a614a
Phosphate rock2.7b3.1b1.3c1.5b11c17b23b39c3.0b3.2b36c39b

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 .