Table 1. Soil chemical properties, sampled at 0–30 cm depth.

Soil parameters
pH (H2O)	7.2
Organic matter (g kg-1)	14.7
Total N (g kg-1)	0.8
Available N (mg kg-1)	59.6
Available P (mg kg-1)	9.9
Available K (mg kg-1)	76.6

The methodology of soil analysis used were: pH (potentiometric analysis), Organic matter (potassium bichromate titrimetric method), Total N (the Kjeldahl), Available N (Alkaline hydrolysis diffusion), Available P (Mo-Sb colorimetric method), Available K (flame photometric meter method)