The transformation of value chains in Africa: Evidence from the first large survey of maize traders in Nigeria

This brief summarizes a report on the first large survey of maize traders in Nigeria in the past several decades. The sample of about 1400 traders covered one state in the South and four in the North, with traders in city wholesale markets in the North (Jos, Kaduna, Kano, Katsina) and South (Ibadan) and regional markets in secondary cities in the North. These urban traders source maize from farms and other traders, and assemble, bulk, and transport or buy transport services. Was administered formal questionnaires to traders individually, and surveyed assets and behavior in 2016 and 2011; five years before