MOTIFS: a monitoring tool for integrated farm sustainability Marijke Meul, Steven Van Passel, Frank Nevens, Joost Dessein, Elke Rogge, Annelies Mulier and Annelies Van Hauwermeiren Agron. Sustain. Dev., 28 2 (2008) 321-332 Published online: 22 March 2008 DOI: 10.1051/agro:2008001