Assessment of Copper and Zinc in Soils of a Vineyard Region in the State of São Paulo, Brazil

Table 3

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

	CuT	ZnT	CuDTPA acidified	ZnDTPA acidified	CuCaCl acidified	ZnCaCl  acidified
Organic matter	0.49*	0.15	0.27	0.57*	0.12	−0.28
pH	0.37*	−0.09	0.33	−0.25	−0.01	−0.87*
CEC	0.52*	0.08	0.22	−0.01	0.10	−0.60*
Bases saturation	0.45*	−0.05	0.35	−0.06	0.00	−0.88*
CuDTPA	0.72*	0.52*	0.97*	0.44*	0.14	−0.18
ZnDTPA	0.49*	0.63*	0.47*	0.94*	0.06	0.25
CuCaCl	0.00	−0.01	−0.49*	0.12	0.20	0.25
ZnCaCl	−0.16	0.22	−0.25	0.37	0.11	0.88*
CuT	1.00	0.54*	0.70*	0.44*	0.20	−0.29
ZnT		1.00	0.47*	0.63*	−0.01	0.21
CuDTPA acidified			1.00	0.33	0.11	−0.27
ZnDTPA acidified				1.00	0.06	0.23
CuCaCl acidified					1.00	−0.02
Clay			0.45*	−0.17	−0.24	−0.18
Silt			−0.30	0.01	0.26	0.20
Sand			−0.17	0.16	−0.01	−0.01

^∗𝑃<0.05.