Land is a key input into agricultural production and the agricultural sector remains the main user of rural land in most OECD countries. How land is managed in agriculture, and the conversion of farmland to non-agricultural uses, are likely to have implications not only for the provision of food, but also for the supply of public goods such as rural amenities, as well as for the quantity and quality of water. Changes in agricultural, agri-environmental, land-use, and regional policies – together with factors such as climate and demographic changes – increasingly affect land use and management choices. This report examines the impact of several policies on farmland conversion using a combination of economic analysis and empirical case studies.