Conservation Agriculture Sustainable Intensification (CASI) is generalized as a system of sustainable food production from less inputs through more efficient use of resources and with minimal impact on environment. It also implies improving the capacities of people and their institutions to deliver and use inputs efficiently so as to avoid excessive wastage and harness large scale ecosystem services that benefits producers and consumers alike. This approach doesn’t attempt to have no impact on the environment but to limit any environmental footprint to a level below the natural recovery capacity. Above all, CASI is necessary to achieve and sustain increased yield in ways that don’t harm the resource base and the environment.