Demand-Driven Technologies for Sustainable Maize ... - IITA

255could take place without artifi cial inoculation. The use of resistantvarieties and the IPM techniques are the most appropriate controlstrategies for resource-poor farmers.With the high incidence and outbreaks of ear rots, and C. zeaemaydis,it has become necessary for plant breeders, in collaboration withplant pathologists, to initiate screening programs to identify resistancesources to these two pathogens in the WHL, the ecology with thegreatest potential for increased maize production in Cameroon.AcknowledgementThis work was conducted with grants provided by the InternationalFunds for Agriculture and Development (IFAD) and the African DevelopmentBank (ADB). Technical and logistical assistance was providedby IITA.ReferencesAyuk-Takem, J.A., J.P. Eckebil, and H.R. Chheda, 1982. Problems and potentialsof maize (Zea mays L.) research and production in Cameroon. RevueSciences et Technique 2: 5–16.Buddenhagen, J.L., 1985. Maize diseases in relation to maize improvementin the tropics. Pp 243-275 In A. Brandolini and F. Salamini (eds.) Breedingstrategies for maize production and improvement in the tropics. FAO/UNand Inst. Agron. L’ Oltremare: Foirenze, Italy.Cardwell, K.F., F. Schulthess, R. Ndemah, and Z. Ngoko, 1997. A systemsapproach to assess crop health and maize yield losses due to pestsand diseases in Cameroon. Agriculture, Ecosystems and Environment65: 33–47.Clive, J., 1971. A manual of assessment keys for plant diseases. No. 1458. APSPress: St. Paul, Mn., USA.Fajemisin, J.M., 1985. Maize diseases in Africa and their role in the varietalimprovement process. Pp 237–250 In G. Bantayehu (ed.) To feedourselves: Proceedings of the fi rst Eastern, Central and Southern AfricaMaize Workshop, Lusaka, Zambia. March 10–17 1985.FAO (Food and Agriculture Organization of the United Nations), 1994.Production Year Book. Vol. 48, 77pp. FAO: Rome, Italy.Foko, J., 1973. Observations phytosanitaires sur les essais intervariétaux demaïs dans le Sud et l’Ouest-Cameroun. Rapport Technique.13pp.Hanway, J.J., 1966. Growth stages of corn (Zea mays L.). Agronomic Journal58:487–491.Latterell, F.M. and A.E. Rossi, 1983. Gray Leaf spot of corn: a disease on themove. Plant Disease 67: 842–847.MINAGRI, 1996. Rapport annual des activites du Ministère de l’AgricultureDelegation Provinciale de l’Agriculture du Nord Ouest, Bamenda,Cameroun. Rapport Technique.