Legume LINK began in December 2008, and is funded by Defra and industry partners under the Sustainable Arable LINK scheme. The project aims are to improve fertility building in organic rotations through use of a mixture of a wide range of leguminous species and to provide more efficient transfer of nitrogen to the subsequent crop. Species with a range of tolerances to different environmental conditions, and with differing growth characteristics, are being grown together, and the performance of the individuals and the ley assessed.