On-Farm Experimentation with Improved Maize Seed and Soil Amendments in Southern Ghana: Productivity Effects in Small Holder Farms

Table 9

Yield components of three maize varieties as influenced by residual effects/application of soil amendments in the coastal savannah zone (CSZ) and semi deciduous forest zone (SDFZ) in the minor cropping season.

Treatments	No. of cobs per plant		No. of kernel rows per cob		No. of kernels per row		No of kernels per cob		Weight per cob (g)		Cob diameter (cm)		Cob length (cm)
Varieties	CSZ	SDFZ	CSZ	SDFZ	CSZ	SDFZ	CSZ	SDFZ	CSZ	SDFZ	CSZ	SDFZ	CSZ	SDFZ
Ahomatea	1.03	1.04	13.2	13.4	29.1	30.1	391.0	405.5	132.0	147.9	3.33	3.49	13.0	14.5
Obatanpa	1.03	1.05	13.5	13.7	29.4	31.0	393.9	424.8	178.6	188.7	4.04	4.19	13.9	14.8
Omankwa	1.05	1.06	14.0	14.4	30.4	32.1	427.6	447.3	182.2	190.9	4.11	4.29	14.1	15.2
Tukey (5%)	0.02	0.02	0.22	0.22	0.62	0.62	17.17	17.17	8.00	8.00	0.094	0.094	0.25	0.25
Soil amendments
Fert + Man	1.10	1.13	14.4	14.7	33.8	34.0	477.0	491.0	219.6	234.2	4.30	4.35	15.2	16.4
Fertilizer	1.09	1.09	14.2	14.5	32.6	33.5	470.1	481.0	211.5	225.3	4.14	4.30	15.0	15.9
Manure	1.03	1.05	14.1	14.2	31.1	31.5	435.1	447.4	194.0	210.7	3.87	4.12	14.5	15.3
Res. Man	1.02	1.04	13.4	13.7	30.0	30.8	397.8	405.7	151.1	158.4	3.80	3.94	13.7	14.7
Res. Fert + Man	1.01	1.03	13.3	13.5	28.1	29.9	366.2	402.0	150.3	147.6	3.68	3.82	13.0	14.4
Res. Fert	1.00	1.02	12.8	13.4	26.6	29.4	354.9	388.2	129.2	141.7	3.61	3.75	12.4	14.0
Control	1.00	1.01	13.0	12.9	25.2	28.4	327.9	365.8	107.9	112.8	3.38	3.65	11.7	13.0
Tukey (5%)	0.03	0.03	0.47	0.47	0.94	0.94	20.49	20.49	10.52	10.52	0.13	0.13	0.51	0.51

Fert + Man: fertilizer + manure; Res. Man: residual manure; Res. Fert + Man: residual fertilizer + manure; Res. Fert: residual fertilizer; No.: number.