Effect of organic and inorganic nutrient sources on soil mineral nitrogen and maize yields in Western Kenya
Integrated soil fertility management research at TSBF: the framework, the principles, and their application
Tillage effects on soil organic carbon and nitrogen distribution in particle size fractions of a red clay soil profile in Zimbabwe
Farmers` independent experimentation with green manure and/or cover crops: a component of participatory research for improving Ugandan farming systems
Designing sustainable, commercial, farmer seed production systems in Africa: case studies from Uganda