in PC2, that explained 26.5 percent of total variance, the WSN and NH concentrations in the soil were positively related with the concentrations of Cd, Mn and Zn in L, and negatively with plant Pb content.
along this component, pig slurry-amended soils were separated from the rest of the treatments.
PC3, with 10.5 percent of the variance explained, showed a positive relation between soil pH and extractable-As and a negative relation between those parameters and extractable-AL, -Cu, Fe and -Pb concentrations