Sweetpotato [Ipomoea batatas (L.) Lam] is a neotropical crop grown in all subtropical and tropical regions of the world, from sea level up to 2,800 m altitude (Woolfe, 1992). Sweetpotato is a rustic crop, easy to maintain, tolerant to drought, high temperatures and humidity. As a plant of tropical origin, the sweetpotato grows better in warm regions, but new improved cultivars of high yield potential and modern cultivation techniques allow economic production in temperate regions. Its production cost is relatively low, and high returns may be obtained. It is also one of the vegetables with one of the highest production capacities in terms of energy per unit area and time (kcal/ha/day).