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

Table 7

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

Maize varieties	No. of days to 50% anthesis		No. of days to 50% silking		Anthesis-silking interval (ASI)		Days to physiological maturity
	CSZ	SDFZ	CSZ	SDFZ	CSZ	SDFZ	CSZ	SDFZ
Ahomatea	57.9	56.4	63.4	61.7	5.5	5.3	124.1	121.8
Obatanpa	55.9	54.8	61.0	59.9	5.1	5.1	106.9	105.4
Omankwa	46.8	44.9	50.1	47.8	3.3	2.9	93.1	91.4
Tukey (5%)	0.90	0.90	1.08	1.08	0.53	0.53	1.22	1.22
Soil amendments
Fert + man	53.0	50.8	57.1	54.8	4.1	3.9	105.9	104.1
Fertilizer	52.0	51.8	56.3	55.8	4.3	3.9	106.0	104.2
Manure	53.2	51.5	58	56.0	4.7	4.4	107.4	105.7
Res man	53.9	52.4	58.7	57.1	4.7	4.6	108.8	107.3
Res. fert + man	53.8	52.7	58.6	57.4	4.9	4.8	109.0	106.8
Res. fert	54.0	51.4	58.8	56.2	4.8	4.7	109.2	106.8
Control	54.7	53.5	59.6	58.2	4.9	4.7	109.8	108.3
Tukey (5%)	1.44	1.44	1.38	1.38	—	—	3.02	3.02

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