Response of Bread Wheat (Triticum aestivum L.) to Potassium (K) and Blended NPS Fertilizer Rates in the Nitisols of Southern Ethiopia

Table 1

Selected soil physicochemical properties of the experimental site.

Parameter	Value	Rating	Reference
Physical
Soil particle size distribution
Sand	23.75
Silt	30.07		Hazelton and Murphy [32]
Clay	46.18
Texture class	Clay
Chemical
pH (1 : 2.5 soil-to-water ratio)	5.86	Moderately acidic	Hazelton and Murphy [32]
Organic carbon	2.2	Low	Landon [33]
Total nitrogen (%)	0.16	Low	Landon [33]
CEC (cmol(+)·kg^−1)	25.11	Medium	Landon [33]
Available phosphorous(mg·kg^−1)	12.39	Medium	Cottenie [34]
Available K (cmol(+)·kg^−1)	0.96	High	FAO [24]
Available sulfur (mg·kg^−1)	5.03	Low	Allen and Pilbeam [25]