@ARTICLE {RUHIGWA:1993a, title = {Spatial variability in soil chemical properties under Dactyladenia barteri, Alchomea cordifolia, Senna siamea, and Gmelina arborea hedgerows on an acid Ultisol}, author = {Ruhigwa, B. A. and Gichuru, M. and Tariah, N. M. * and Isirimah, N. * and Douglas, D. C. *}, journal = {Experimental Agriculture}, year = {1993}, volume = {29}, pages = {365--372}, issn = {0014-4797}, }