@ARTICLE {KAYOMBO: 1986a, title = {Traffic-induced compaction in maize, cowpea and soya bean production on a tropical alfisol after ploughing and no-tillage: soil physical properties}, author = {Kayombo, B. * and Lal, R. and Mrema, G. C. *}, journal = {Journal of the Science of Food & Agriculture}, year = {1986}, volume = {37}, pages = {969--978}, issn = {0022-5142}, doi = {10.1002/jsfa.2740371004}, }