Globally, beans are great source of protein for human, and are found in curry
dishes, cooked with rice, in desserts or as paste. This is a popular legume grown in Nigeria
which were mainly dried and stored for either local consumption or traded and exported to
various countries around the world, especially the European Union. Nigeria was among the
leading beans exporting nation of the world. Since 2013, the EU has placed temporary
import suspension on dried-beans originating from Nigeria due to the discovery of higher
pesticides residue found in them (between 0.03mg/kg and 4.6mg/kg).