@ARTICLE {SHIWACHI:2006, title = {Iron toxicity symptoms in yams (Dioscorea spp.) grown in water culture}, author = {Shiwachi, H. and Kikuno, H. and Okonkwo, C. and Asiedu, R. }, journal = {Tropical Science}, year = {2006}, volume = {46}, number = {3}, pages = {160--165}, issn = {0041-3291}, note = {RTB; Root and Tuber; Yam}, doi = {10.1002/ts.172}, }