Boost in ~ndustriadl !;velopment of Nigeria now requires a greater supply of diverse
carbohydrate, protein and oil crops as raw materials for industry, feed and food. Grain
legumes and cereals have advantage over ioot and tuber crops because:
I. Grain seeds are small, cheaper and easier to provide planting material for large
hectarages; while the tuber crops such as yams are propagated from expensive
and bulky waole tuber or sett pieces.
2. Cultivation of grain cereals and legumes is easier to mechanize.
3. Storage of grain cereals and legumes is easier than 'for yams