ACAI is a 5-year Bill & Melinda Gates Foundation funded project in 5 African countries (Nigeria, Tanzania, Democratic Republic of Congo, Ghana and Uganda) aiming to increase the availability of appropriate and affordable technologies to sustainably improve cassava productivity in the short- and long-term. The project is composed of six Work Streams: (i) Research on cassava growth dynamics, nutrient and water requirements, and responsiveness to inputs, (ii) Development of a geo-spatial cassava agronomy information base, (iii) Production and validation of demand-driven decision support tools for cassava agronomy, (iv) Facilitation of the use of decision support tools to farmers, extension serv