Farmers in Africa and other developing countries face a range of risks, which are prevalent throughout the agricultural value chain – from input acquisition to post-harvest storage and marketing. Output tends to vary as a result of the weather and emerging evidence suggests that the probability and impact of weather-related events in Africa is increasing due to climate change. Diseases, pests or other natural factors also affect farm output. After harvest, African farmers face considerable market access difficulties and volatility in prices. This is often due to poor physical infrastructure, missing or weak market-supporting institutions, poor services delivery systems and disabling policies.