Comparison of Teff (Eragrostis teff (Zucc.) Trotter) Varieties in Response to Blended NPSZnB Fertilizer On-Farm and on Research Station

Table 3

Soil physical and chemical properties of the two experimental sites before planting.

Soil properties	On-farm		Research station		References
	Values	Ratings	Values	Ratings
A. Physical properties
Clay (%)	70		32
Silt (%)	20		38
Sand (%)	10		30
Textural class	Clay		ClayLoam		Bouyoucos [22]
B. Chemical properties
pH (1 : 2.5 H2O)	6.14	Neutral	8.35	Basic	Tekalign [23]
Organic carbon (%)	1.28	Low	0.98	Low	Tekalign [23]
Total nitrogen (%)	0.22	Moderate	0.09	Low	Tekalign [23]
Available phosphorus (ppm)	5.49	Very low	3.92	Very low	Olsen et al. [16]
CEC (meq/100 g soil)	49.76	Very high	33.29	High	Landon [24]
Available sulfur (ppm)	14.44	Very low	2.23	Very low	EthioSIS [25]
Available boron (ppm)	0.27	Very low	0.36	Very low	EthioSIS [25]
Available zinc (ppm)	1.19	Very low	0.52	Very low	EthioSIS [25]

Source: Laboratory analysis results. CEC, cation exchange capacity.