This Field guide differs from ordinary farmers’ guidelines as it is based on locally conducted research and field experience. The Guide draws from field visits, protocol-driven data collection and analysis of production practices in three countries, Burkina Faso, Morocco and Uganda within the framework of FAO-conducted project “Strengthening Agricultural Water Efficiency and Productivity at the African and Global Level”. In each country, WP experiments took place by ground-truth data collection, analysis and simulation, and validation by demonstration. The work involved national and international research institutes in order to obtain proper data and justify the recommendations by local experts. The recommendations – so called “CWP measures” – are geared towards helping farmers to improve their practices in the hope of increased water productivity. While the Guide provides a step-by-step approach to improve CWP and reach optimal irrigation and agronomic practices in each irrigation scheme, the successful outcome often depends on the farmers’ willingness to embrace and adopt the recommended measures.