1. 2016-10-18 While doing legume intercropping research in South Africa (2010-2015), ECHO staff members learned about a system of cereal/cowpea production developed in Nigeria through research by IITA (International Institute of Tropical Agriculture) and national partners (Ajeigbe et al. 2010a, Ajeigbe et al....
  2. The IITA1 2-4-2 Design: Improved cowpea–cereal cropping systems: cereal–double cowpea system for the northern Guinea savanna zone International Institute for Tropical Agriculture, Ibadan, Nigeria