Abstract: Recent years have witnessed a renewed interest in private-sector investment in agriculture. Some have welcomed this trend as a bearer of new livelihood opportunities in lower and middle-income countries. Others have raised concerns about the possible social impacts, including loss of local rights to land, water and other natural resources; threats to local food security; and, more generally, the risk that large-scale investments may marginalise family farmers. The recent debates about 201Cland grabbing201D - whereby investors acquire large areas of land in lower- and middle-income countries - illustrate these trends and positions. There is great demand for insights on how to structure agricultural investments in ways that leave land and share value with local farmers and communities. And in many parts of the world, there is growing experience with models for structuring agricultural investments other than large-scale land acquisitions