Mature roots are different in shapes (as conical, conical-cylindrical, cylindrical and fusiforms), in sizes (ranging from 3 to 15 cm in diameter, as influenced by variety, age and growth conditions) and in peel colors (including white, dark brown and light brown). Although the roots can be harvested at any time between 6-18 months, it is typically to be harvested on average at 10-12 months after planting. Early or late harvesting may lower root yields and root starch contents. Still, the actual practice of farmers is depending on economic factors, i.e. market demand and root prices.
Root harvesting can be accomplished manually by cutting the stem at a height of 40 -
60 cm above the ground and roots are then pulled out by using the iron or woody stalk with
a fulcrum point in between the branches of the plant. Plant tops are cut into pieces for
replanting, leaves are used for making animal fodder and roots are delivered to the market
for direct consumption or to processing areas for subsequent conversion to primary
products as flour, chips and starch.