Nodulation, Growth, and Yield of Soybean (Glycine max L. Merrill) as Affected by Bio-, Organic, and Inorganic NPSB Fertilizers, and Lime in Assosa Zone, Western Ethiopia

Table 1

Initial soil physicochemical properties of the experimental sites.

Soil properties	Assosa	Rating	Bambassi	Rating	COS	Rating
Physical properties
Bulk density (g cm^−3)	1.16	Low	1.23	Low	1.19	Low
Particle size distribution
Sand (%)	24.00		21.33		22.66
Clay (%)	53.00		52.34		52.67
Silt (%)	23.00		26.33		24.66
Textural class	Clay		Clay		Clay
Chemical properties
pH (H2O)	5.32	Strongly acidic	5.50	Strongly acidic	5.41	Strongly acidic
Total nitrogen (%)	0.20	Medium	0.49	High	0.34	High
Available P (ppm)	6.80	Low	5.49	Low	6.14	Low
Organic carbon (%)	2.80	High	3.30	Very high	3.05	High
CEC (meq 100 g soil^−1)	22.05	Moderate	25.61	Very high	23.83	Moderate

According to [20]. CEC = cation exchange capacity; P = phosphorus; ppm = part per million; pH = power of hydrogen; COS = combined over sites.