Edaphic Constraints to Bean Production in Eastern Africa: The Selection of Bean Cultivars and Rhizobium Having Tolerance to Low N and P, and Ability to Grow at Acid pH
University of Minnesota
Sokoine University (Tanzania); North Dakota State University, USDA (US), CIAT (Colombia); EMBRAPA (Brazil)
Peter Graham (US); Robert Mabagala (Tanzania)
1. To select bean cultivars and rhizobia with tolerance to low P and N levels in soil, and able tonodulate and fix N2 under such limiting conditions in Eastern Africa. 2. To select bean cultivars and Rhizobium with tolerance to acid soil factors and able to nodulate and fix N2 at acid pH.