@ARTICLE {IBEWIRO:2000a, title = {Influence of phytoparasitic nematodes on symbiotic N2 fixation in tropical herbaceous legume cover crops}, author = {Ibewiro, B. and Vanlauwe, B. and Sanginga, P. and Merckx, R. }, journal = {Biology and Fertility of Soils}, year = {2000}, volume = {31}, pages = {254--260}, }