Suitability Assessment of Surface Water Quality for Irrigation: A Case Study of Modjo River, Ethiopia

Table 8

The concentration of miscellaneous chemicals in Modjo River

Miscellaneous chemical	Sampling station						FAO limit [5]
	1	2	3	4	5	6
Nutrients
NH3-N (mg/L)	0.24	0.69	0.1	0.42	0.01	0.01	5.00
NO2-N (mg/L)	0.003	0.056	0.023	0.003	0.046	0.020	1.600
PO4-P (mg/L)	1.70	0.11	0.64	0.39	0.70	0.60	2.00
K (mg/L)	76.3	36.7	54.9	46.5	47.1	47.8	20.0
(mg/L)	540	210	350	320	320	310	6
(mg/L)	1100	430	700	640	640	630	610
pH	9.45	9.03	8.89	8.74	8.57	8.72	6–9