In developing countries where agriculture comprises a significant part of the GDP, such as Nigeria and Ethiopia, agrifood value chains are very important, and the livelihoods of smallholder farmers depend on their development and performance. Agricultural and trade policies have implications well beyond the farm, including for consumers, producers, traders, and processors. In this context, it is necessary to measure the impact of policies along the entire agrifood value chain of a commodity in order to minimize unintended consequences of policies for all value chain actors. Read more.