Grain legumes are affordable source of proteins, especially important to those who cannot afford to buy enough milk, meat or fish to meet their protein needs. Productivity gains achieved through crop improvement both increase the quantity of grain legumes available to poor rural families and moderate the prices that they have to pay for them, increasing food security. Farmers often fit grain legumes into underutilized niches in farming systems such as intercrops, relay crops and end-of-season second crops – squeezing more food from less land, thereby increasing their food security. More crops grown also means less risk – for example, when drought devastates a cereal crop, the later-flowering legumes often escape it, rescuing the farm family’s food supply. When grown in rotation with other crops, grain legumes also break the weed and disease cycles of those crops and enrich the soil with nitrogen, reducing farmer’s vulnerability to crop failures.