Sweet Potato Value Chain Analysis Reveals Opportunities for Increased Income and Food Security in Northern Ghana

Table 4

Farm size and cost and revenue structure analyses of sweet potato production in Northern Ghana.

Cost variable	Mean	Std. dev.	Min	Max
Farm size (ha)	0.5	0.3	0.2	4.0
Fertilizer use (kg/ha)	49.2	54.3	0.0	200.0
Cost of ploughing	181.4 (33.4%)	51.9	62.5	300.0
Cost of sowing/planting	32.9 (6.1%)	13.6	9.0	75.0
Cost of seed	111.7 (20.6%)	56.6	35.7	300.0
Cost of weeding	124.4 (22.9%)	44.0	50.0	250.0
Cost of fertilizer	88.0 (16.2%)	100.4	0.0	500.0
Cost of insecticide spraying	4.2 (1.6%)	9.6	0.0	50.0
Total cost/ha	542.5	121.7	250.0	925.0
Yield (bags)	18.9	4.9	11.3	31.50
Yield (kg)/ha	1984.3	509.5	1181.3	3307.5
TR/ha (early harvest)	1752.6	500.3	956.2	3142.1
TR/ha (late harvest)	1375.5	408.5	731.2	2513.7
Price/bag (early harvest)	92.5	7.5	85.0	100.0
Price/bag (late harvest)	72.5	7.5	65.0	80.0
Price/kg (early harvest)	0.9	0.1	0.8	1.0
Price/kg (Late harvest)	0.7	0.1	0.6	0.8

All cost and price items are in Ghana Cedis (GH); current exchange rate is approximately $ 1 = GH 4.4.