The interaction effects of coffee husk compost and lime on soil exchangeable bases (Ca2+, Mg2+, K+ and Na+).

Table 5: The interaction effects of coffee husk compost and lime on soil exchangeable bases (Ca²⁺, Mg²⁺, K⁺ and Na⁺).

Treatment description		Exchangeable bases
CHC rate(t/ha)	L rate (t/ha)	Ca²⁺ (cmol(+)/kg)	Mg²⁺ (cmol(+)/kg)	K⁺ (cmol(+)/kg)	Na⁺ (cmol(+)/kg)
0	0	2.41^g	1.23^h	0.49^h	0.053^c
	1.6	5.13^e	1.49^gh	0.53^h	0.067^ab
	3.2	7.60^d	1.62^gh	0.57^h	0.067^ab
	4.8	9.18^bc	1.79^fgh	0.77^gh	0.067^ab
5	0	3.48^f	1.88^fg	1.09^ef	0.070^ab
	1.6	5.80^e	2.34^ef	1.04^fg	0.060^bc
	3.2	8.26^cd	3.24^cd	0.99^fg	0.060^bc
	4.8	10.00^ab	3.73^c	0.97^fg	0.067^ab
10	0	4.97^e	2.80^de	1.70^b	0.063^ab
	1.6	7.27^d	3.36^cd	1.45^bcd	0.073^a
	3.2	8.94^bc	4.48^b	1.38^cde	0.070^ab
	4.8	10.88^a	4.95^b	1.24^def	0.067^ab
15	0	5.75^e	3.49^c	2.39^a	0.070^ab
	1.6	7.74^d	4.35^b	1.70^b	0.063^ab
	3.2	9.18^bc	4.88^b	1.63^bc	0.067^ab
	4.8	9.98^ab	5.57^a	1.75^b	0.070^ab
DMRT (5%)		*	**	**	*
CV (%)		8.40	10.79	13.23	8.02

DMRT = Duncan’s Multiple Range Test; CHC = coffee husk compost; L = Lime; * = significant at p ≤ 0.05; ** = highly significant at p ≤ 0.01; CV = Coefficient of Variation. Mean values followed by the same letters with in a column are statistically not different from each other at p ≤ 0.05

^{a,b,c,d,e,f,g,h}: Indicate statistically significance difference of each treatment from each other at 5% by Duncan Multiple Range Test.