Effects of Lime, Vermicompost, and Chemical P Fertilizer on Selected Properties of Acid Soils of Ebantu District, Western Highlands of Ethiopia

Table 5

Effects of treatments on organic matter, total nitrogen, and available phosphorus of the soil after incubation.

Treatment	Rate	OM	TN	Bray mg·kg^−1 II P
		%
Control	0	2.13^l	0.20^ij	4.5^l
Lime (tons·ha^−1)	2	2.17^jkl	0.21^hi	5.6^k
	4	2.21^jk	0.21^hi	6.3^gh
	6	2.28^i	0.23^gh	6.2^h
Chemical P (kg·ha^−1)	20	2.17^jkl	0.20^ij	5.7^jk
	40	2.14^l	0.19^j	6.0^i
	60	2.16^kl	0.21^hi	6.2^h
VC (tons·ha^−1)	2.5	2.72^h	0.21^hi	5.8^ij
	5.0	3.20^f	0.23^gh	6.0^i
	7.5	3.99^b	0.27^abc	6.3^gh
Chemical P (kg·ha^−1) + lime (4 tons·ha^−1)	20	2.24^ij	0.22^hi	6.5^f
	40	2.19^jkl	0.21^hi	6.9^e
	60	2.19^jkl	0.21^hi	7.6^bc
VC (tons·ha^−1) + lime (4 tons·ha^−1)	2.5	3.02^g	0.25^edf	6.5^f
	5.0	3.49^d	0.26^cde	6.9^e
	7.5	4.10^a	0.29^a	7.3^d
Chemical P (kg·ha^−1) + VC (5 tons·ha^−1)	20	3.20^f	0.23^gh	6.4^fg
	40	3.21^f	0.22^hi	6.4^fg
	60	3.48^d	0.25^edf	7.7^b
Chemical P (20 kg·ha^−1) + lime (4 tons·ha^−1) + VC (5 tons·ha^−1)	—	3.40^e	0.26^cde	7.4^cd
Chemical P (40 kg·ha^−1) + lime (4 tons·ha^−1) + VC (5 tons·ha^−1)	—	3.50^d	0.26^cde	7.6^bc
Chemical P (60 kg·ha^−1) + lime (2 tons·ha^−1) + VC (7.5 tons·ha^−1)	—	3.92^c	0.28^ab	8.3^a
Chemical P (20 kg·ha^−1) + lime (4 tons·ha^−1) + VC (2.5 tons·ha^−1)	—	2.99^g	0.25^edf	7.0^e
Chemical P (60 kg·ha^−1) + lime (2 tons·ha^−1) + VC (5 tons·ha^−1)	—	3.22^f	0.24^fg	7.3^d
F-test	—
CV (%)	—	1	3.64	1.41

Means followed by the same letter within a column are not significantly different at ; significant at using Duncan’s multiple range test; OM, organic matter; TN, total nitrogen; C/N, carbon to nitrogen ratio; chemical P, chemical phosphorus; VC, vermicompost; CV, coefficient of variation.