NigeriaA woman cleans and packs cassava (manioc) after it has been sun-dried. The tuberous roots of this major staple food are a rich source of nutritious starch usually processed into flour and tapioca. - -...

NigeriaCassava (manioc) plants are under observation at the International Institute for Tropical Agriculture at Ibadan, protected from mealy bugs and green spider mites by ventilated bags, as part of a biolo...