@INBOOK {IKOTUN:1990, title = {Crop protection}, author = {Ikotun, T. * and Neuenschwander, P. and Yaninek, J. and Hammond, W. }, year = {1990}, type = {Cassava in tropical Africa: a reference manual}, pages = {69--81}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, }