Comparative analysis of costs and returns in dry and wet season planted yams in Benue State Nigeria

Pages 167-173

B.O. Ugwu, T.O Ezulike, G.C. Orkwor and E.C. Nwauzor

ABSTRACT

In forest and savanna zones of Nigeria, yams may be planted in dry or wet season. Differences in time of planting may influence the amount and availability of labour, disease/pest incidence, and yield of yam. All this could affect returns on investment in yam production. The problem is to ascertain when best to plant yams to maximise gross returns. In forest and savanna zones of Nigeria, yams may be planted in dry or wet season. Differences in time of planting may influence the amount and availability of labour, disease/pest incidence, and yield of yam. All this could affect returns on investment in yam production. The problem is to ascertain when best to plant yams to maximise gross returns. Five cultivars of yam were planted in heaps in January 1994, for the dry season planting, and in April of the same year, for the wet season planting.  The experimental design was a randomised complete block design in four replications, and the experiment was repeated in 1995. A cost and returns enterprise budget shows that, for both Dioscorea rotundata and Dioscorea alata, time of planting did not affect total variable costs. However, yield, total revenue and gross margin were significantly higher for the dry, than wet season planted D. rotundata, but the reverse was the case with respect to D. alata.

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