Farmers` independent experimentation with green manure and/or cover crops: a component of participatory research for improving Ugandan farming systems

Wortmann, Charles S.; Kaizzi, C.K.; Fischler, Martin A. 1999. Farmers` independent experimentation with green manure and/or cover crops : A component of participatory research for improving Ugandan farming systems. In: Fujisaka, Sam; Jones, Annie L. (eds.). Systems and farmer participatory research: Developments in research on natural resource management. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. p. 118-127. (CIAT publication no. 311)