Table 4.

Coefficients of determination (R²) for the correlations between modeled soil water retention values and vermicompost application doses for three selected pressure head values corresponding to matrix capacity (θ₁₀), field capacity (θ₁₀₀) and permanent wilting point (θ₁₅₃₀₀). R² values with the minus sign indicate decreasing correlations. The significant correlations were marked with asterisks (**p < 0.01; *p < 0.05).

	Orleans (OR)	CREA (CR)	UNIPA (UN)	Ginosa (GI)	Castellaneta (CA)
θ10	0.5597**	0.2255*	0.1795	0.3188*	0.5566**
θ100	0.0013	0.1862	0.0200	0.6316**	0.8263**
θ15300	−0.1498	0.7486**	0.2450*	0.8584**	0.9580**