Phenotypic Response of Two Garlic Varieties to Different Nitrogen Fertilization Grown under Irrigation in Sudan Savannah Ecological Zone of Nigeria

Table 4

Physical and chemical properties of soil of the experimental site during 2010/2011.

Soil characteristics	Soil depth
	0–15 cm	15–30 cm
Chemical properties
pHw (1 : 1)	6.22	6.09
pHc (1 : 2)	5.47	5.32
Organic carbon (%)	0.74	0.36
Total nitrogen (%)	0.97	0.58
Available phosphorus (%)	7.36	6.44
Exchangeable bases (meq/100 g)
Ca	2.53	2.62
Mg	0.73	0.55
K	0.21	0.19
Na	0.28	0.24
CEC	7.38	6.81
Zn	0.36	0.39
Cu	0.19	0.30
Fe	7.13	8.47
Mn	13.09	15.26
Physical properties
Sand (%)	81.68	83.68
Silt (%)	8.56	8.56
Clay (%)	9.76	7.76
Textural class	Loam	Loam