Table 3: Correlation coefficients between forms of Cu and Zn and other soil attributes.

CuTZnTCuDTPA acidifiedZnDTPA acidifiedCuCaCl acidifiedZnCaCl  acidified

Organic matter0.49*0.150.270.57*0.12−0.28
pH0.37*−0.090.33−0.25−0.01−0.87*
CEC0.52*0.080.22−0.010.10−0.60*
Bases saturation0.45*−0.050.35−0.060.00−0.88*
CuDTPA0.72*0.52*0.97*0.44*0.14−0.18
ZnDTPA0.49*0.63*0.47*0.94*0.060.25
CuCaCl0.00−0.01−0.49*0.120.200.25
ZnCaCl−0.160.22−0.250.370.110.88*
CuT1.000.54*0.70*0.44*0.20−0.29
ZnT1.000.47*0.63*−0.010.21
CuDTPA acidified1.000.330.11−0.27
ZnDTPA acidified1.000.060.23
CuCaCl acidified1.00−0.02
Clay0.45*−0.17−0.24−0.18
Silt−0.300.010.260.20
Sand−0.170.16−0.01−0.01

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