Table 1: Initial soil physical and chemical characteristics in the experimental parcel (year 2000).

Soil parameter Sand (2–0.05 mm) (g 100 g−1) 68.1 Silt (0.05–0.002 mm) (g  100 g−1) 14.8 Clay (<0.002 mm) (g 100 g−1) 17.1 pH (1 : 2.5 soil : water) 6.6 Organic matter (Walkley-Black) (g 100 g−1) 1.29 C/N 9.18 Phosphorus (Olsen) (mg kg−1) 186 Potassium (ammonium acetate extract) (mg kg−1) 168 Calcium (ammonium acetate extract) (mg kg−1) 1381 Magnesium (ammonium acetate extract) (mg kg−1) 150