TSBF-CIAT and its partners are working in western Kenya to develop, evaluate and disseminate integrated soil fertility management practices in which legumes are a prominent component. A substantial part of this work is implemented through PhD projects co-supervised by Cornell University, Wageningen University and TSBF-CIAT. A field trip by scientists from TSBF-CIAT, the Rockefeller Foundation, Kenya Forestry Research Institute (KEFRI), Moi University, Cornell University and Wageningen University to some of the research sites on 10 11 November 2003 examined the progress in these activities. This newsletter/report summarizes some results of the various projects.