Integrated Use of Cattle Manure and NPS Fertilizer to Improve the Yield of Grain Amaranth (Amaranthus caudatus L.) in Southwest Ethiopia

Table 2

Chemical properties of the experimental cattle manure.

Parameters	Values	Rating	Reference
pH (H2O)	6.76	Neutral	[15]
OM (%)	42.359	Very high	[15]
CEC (meq/100 g soil)	31.05	High	[17]
TN (%)	1.582	Very high	[15]
Av.P (ppm)	6.18	Medium	[16]

Where, OM = organic matter, CEC = cation exchange capacity, TN = total nitrogen, Av.P = available phosphorus.