@INPROCEEDINGS {VAN ASTEN:2004a, title = {Keynote presentation on natural resource management: actual and potential soil quality constraints in East African highland banana systems and their relation with other yield loss factors}, author = {Van Asten, P. }, booktitle = {1st International Congress on Musa, 6-9 July 2004, Penang, Malaysia}, year = {2004}, note = {RTB; Banana; Plantain}, }