Physiological Evaluations of Maize Hybrids under Low Nitrogen

Table 3

Physical and chemical properties of soil at Tudun Wada and Zaria during 2014 and 2016 rainy season.

	Tudun Wada		Zaria
Year	2014	2016	2014	2016
Physical properties (g kg^-1)
Sand	490	90	450	560
Silt	420	570	190	190
Clay	90	340	360	250
Textural class	Clay loam	Silty clay	Sandy clay loam	Sandy clay loam
Chemical properties
PH in H20 1;1	6.60	6.18	5.80	5.54
Organic carbon (mg kg^−1)	2.40	8.10	7.70	10.19
Total N (mg kg^−1)	0.36	0.070	0.59	0.109
Available P (mg kg^−1)	3.70	6.15	10.45	16.11
Exchangeable bases (cmol kg^-1)
Ca^++	2.86	0.15	4.78	0.57
K^+	0.03	0.03	0.03	0.06
Na^++	0.11	0.56	0.13	0.53
Mg^++	0.84	0.88	1.00	1.90
ECEC	3.88	1.62	3.29	3.07

Key. ECEC: effective cation exchange capacity.