Effect of Coffee Husk Compost and NPSB Fertilizers on Selected Soil Chemical Properties of Potato Field in Chora District, South West Ethiopia

Table 3

Interaction effect of CHC and NPSB fertilizer on soil chemical properties of potato field soil.

Treatment		pH (H2O)	OC (%)	TN (%)	Av. P (ppm)	Av. S (ppm)	Ex. acidity (meq 100 g^−1)
CHC	NPSB
0	0	4.26^g	4.52^f	0.12^i	0.95^j	3.01^f	0.76^b
0	112.5	4.27^g	5.22^cde	0.15^h	1.02^j	3.60^de	0.80^b
0	150.0	4.20^g	4.87^ef	0.17^efg	1.47^i	3.64^cde	0.84^a
0	187.5	4.03^h	4.10^g	0.15^gh	2.09^h	3.72^bcde	0.85^a
2.5	0	4.52^ef	5.30^bcd	0.16^fgh	1.12^j	3.51^e	0.53^de
2.5	112.5	4.51^ef	5.00^de	0.20^de	2.42^g	3.72^bcde	0.65^c
2.5	150.0	4.53^ef	5.60^abc	0.18^e	2.63^efg	3.82^bcd	0.58^d
2.5	187.5	4.49^f	5.67^ab	0.19^de	2.50^fg	3.85^bc	0.52^e
5	0	4.72^d	5.80^a	0.16^fgh	1.17^j	3.72^bcde	0.33^g
5	112.5	4.63^de	5.70^ab	0.18^ef	2.57^fg	3.79^bcd	0.32^g
5	150.0	4.62^de	5.77^a	0.18e	2.69^def	4.13^a	0.52^e
5	187.5	4.57ef	5.73^a	0.21^cd	2.83^cde	4.23^a	0.53^de
7.5	0	5.30a	6.00^a	0.18^e	2.90^cd	3.84^bc	0.32^g
7.5	112.5	5.22ab	5.87^a	0.23bc	3.02^c	3.92^b	0.44^f
7.5	150.0	5.13 b	5.93^a	0.24^ab	3.31^b	4.15^a	0.44^f
7.5	187.5	4.97c	5.90^a	0.26^a	3.57^a	4.36^a	0.55^de
F-test
LSD (0.05)		0.11	0.38	0.02	0.24	0.21	0.05
CV (%)		1.46	4.16	7.511	6.22	3.25	5.71

Means sharing the same letter within a column are not significantly different according to LSD at 5% level of significance; CV = coefficient of variation;  = significant at ;  = significant at ;  = significant at ; OC = organic carbon; TN = total nitrogen; Av. P = available phosphorus; Av. S = available sulfur; Ex. acidity = exchangeable acidity.