Cadmium and Zinc Concentration in Grain of Durum Wheat in Relation
to Phosphorus Fertilization, Crop Sequence and Tillage Management
Table 6
Correlation coefficients (r) of grain concentrations of Cd, Zn, Fe and P to other elements concentrations, grain yield, grain protein concentration, and soil characteristics (The full dataset is presented in Supplementary Table 1).
Cd
Zn
Fe
P
Grain
Zn
−0.022
—
0.507***
0.688***
Fe
0.294***
0.507***
—
0.598***
Mn
−0.150***
0.239***
0.441***
0.504***
Cu
−0.134***
0.096*
0.067
0.101*
P
0.223***
0.688***
0.598***
—
Ca
−0.365***
0.408***
−0.017
0.168***
K
0.081*
0.755***
0.579***
0.833***
Mg
0.191***
0.491***
0.390***
0.691***
Protein
0.036
0.425***
0.529***
0.636***
Yield
−0.135***
−0.014
−0.302***
−0.292***
Soil
pH
−0.080
−0.635***
−0.193**
−0.255***
EC
−0.094
−0.047
−0.041
−0.095
Olsen-P
0.309***
0.324***
0.537***
0.553***
DTPA-Cd
0.339***
0.213***
0.235***
0.012
DTPA-Zn
0.044
0.523***
0.193***
0.201**
*, **, *** indicate significant at 0.05, 0.01, and 0.001, respectively.
