Grain Yield and Nitrogen Uptake of Maize (Zea mays L.) as Affected by Soil Management Practices and Their Interaction on Cambisols and Chernozem

Table 1

Some physicochemical properties of the surface layer of soils (0–20 cm) and compost prior to treatment application.

Soil properties	Units	Site/soil type		Compost
		Hawassa Zuria	Meskan
		Cambisols	Chernozem
Physical properties
Sand	%	42	16	—
Silt	%	32	36	—
Clay	%	26	48	—
Textural class	—	Loam	Clay	—
Chemical properties
pH	—	5.86	6.57	6.79
EC	ds/m	0.03	0.06	0.09
OC	%	2.42	4.10	14.80
TN	%	0.26	0.37	1.21
C:N	—	9.31	11.10	12.23
Avail-P	mg kg^−1	4.52	23.74	77.10
CEC	cmolc kg^−1	20.00	62.00	—
Exchangeable Ca	cmolc kg^−1	8.27	39.33
Exchangeable Mg	cmolc kg^−1	0.34	7.67
Exchangeable K	cmolc kg^−1	2.03	2.20
Exchangeable Na	cmolc kg^−1	1.85	1.01