Amendment of Tephrosia Improved Fallows with Inorganic Fertilizers Improves Soil Chemical Properties, N Uptake, and Maize Yield in Malawi

Table 5

Soil chemical properties as affected by Tephrosia improved fallows and application of inorganic fertilizers.

Site	Treatment									% increase/decrease in soil property
		pH	N (%)	OC (%)	OM (%)	P	K	Ca	Mg	pH	N	OC	OM	P	K	Ca	Mg
T. vogelii	Control	5.2	0.12	1.37	2.43	14.1	0.36	2.18	0.27	30.0	0.0	0.0	0.0	−3.0	89.5	33.7	3.8
	N0P0	6.1	0.13	1.52	2.7	8.58	0.77	3.26	0.44	24.5	0.0	1.3	1.5	−41.2	57.1	−15.1	−18.5
	N0P20	6.1	0.13	1.55	2.75	11.23	0.6	3.7	0.39	24.5	0.0	3.3	3.4	−23.1	22.4	−3.6	−27.8
	N0P30	6	0.14	1.46	2.59	5.08	0.61	3.79	0.41	22.4	7.7	−2.7	−2.6	−65.2	24.5	−1.3	−24.1
	N45P0	6.4	0.15	1.99	3.53	5	0.67	3.82	0.44	30.6	15.4	32.7	32.7	−65.8	36.7	−0.5	−18.5
	N45P20	6.1	0.13	1.49	2.64	8.19	0.52	3.98	0.44	24.5	0.0	−0.7	−0.8	−43.9	6.1	3.6	−18.5
	N45P30	5.9	0.12	1.41	2.5	7.87	0.45	3.45	0.39	20.4	−7.7	−6.0	−6.0	−46.1	−8.2	−10.2	−27.8
	N68P0	6.1	0.14	1.68	2.98	5.6	0.81	3.9	0.42	24.5	7.7	12.0	12.0	−61.6	65.3	1.6	−22.2
	N68P20	6.2	0.14	1.64	2.91	8.7	0.65	3.75	0.46	26.5	7.7	9.3	9.4	−40.4	32.7	−2.3	−14.8
	N68P30	6	0.14	1.64	2.91	4.7	0.57	3.5	0.29	22.4	7.7	9.3	9.4	−67.8	16.3	−8.9	−46.3
	LSD0.05	NS	NS	NS	NS	NS	0.24	NS	NS
	CV (%)	2.9	11	15.3	15.3	64	23.3	13.4	23
T. candida	Control	5.2	0.12	1.37	2.43	14.1	0.36	2.18	0.27	30.0	0.0	0.0	0.0	−3.0	89.5	33.7	3.8
	N0P0	5.2	0.11	1.29	2.29	13.18	0.24	1.59	0.16	20.4	10.0	9.3	9.6	−5.2	14.3	−9.1	−11.1
	N0P20	5	0.11	1.23	2.18	16.33	0.25	1.49	0.17	16.3	10.0	4.2	4.3	17.5	19.0	−14.9	−5.6
	N0P30	5.3	0.09	1.09	1.93	17.82	0.26	1.97	0.26	22.4	−10.0	−7.6	−7.7	28.2	23.8	12.6	44.4
	N45P0	5.1	0.09	1.07	1.90	11.25	0.23	2.33	0.29	18.4	−10.0	−9.3	−9.1	−19.1	9.5	33.1	61.1
	N45P20	5.1	0.13	1.55	2.74	11.94	0.2	2.75	0.28	18.4	30.0	31.4	31.1	−14.1	−4.8	57.1	55.6
	N45P30	5.2	0.1	1.15	2.04	23.59	0.23	1.82	0.2	20.4	0.0	−2.5	−2.4	69.7	9.5	4.0	11.1
	N68P0	5.2	0.09	1.00	1.77	17.92	0.22	1.35	0.25	20.4	−10.0	−15.3	−15.3	28.9	4.8	−22.9	38.9
	N68P20	5.2	0.11	1.24	2.2	23.66	0.29	2.26	0.23	20.4	10.0	5.1	5.3	70.2	38.1	29.1	27.8
	N68P30	5.2	0.09	1.10	1.95	21.78	0.21	1.81	0.19	20.4	−10.0	−6.8	−6.7	56.7	0.0	3.4	5.6
	LSD0.05	NS	0.02	0.26	0.47	NS	NS	NS	NS
	CV (%)	2.9	15.6	15.6	15.6	47.3	26.5	36	55