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Acknowledgements .................................................iv Session I: Opening of the Workshop and Keynote Addresses Welcome Address Dr. Aberra Deressa ...............................................1 Opening Address Dr. Seyfu Ketema ........................................................2 Partnership for progress: EARO and CIMMYT working together to promote sustainable maize systems for Ethiopia Drs. Ganesan Srinivasan and Shivaji Pandey................................3 Maize production trends and research in Ethiopia Mosisa Worku, Hadji Tuna, Mandefro Nigussie and Abera Deressa............ 10 Session II: Maize Breeding and Genetics Maize improvement for drought stressed areas of Ethiopia Mandefro Nigussie, Hussien Mohammed, Gelana Sebokssa, Gezahegne Bogale, YosefBeyene, Hailemichael S. and Aderajew Hadis.......................... 15 Development of improved maize germplasm for the mid and low altitude sub-humid agro-ecologies of Ethiopia Mosisa Worku, Jemal Abdurehman, Leta Tulu, Haji Tuna, Legesse Wolde, Kassa Yihun, Wonde Abera, Aschalew Guta, Sewagegne Tariku, Teshale Asefa, Tamirat Birhanu, Yoseph Beyene and Habtamu Zelleke.............................................................27 Development and improvement of highland maize in Ethiopia S. Twumasi-Afriyie, Habtamu Zelleke, Kassa Yihun, Bayisa Asefa and Sewagegne Tariku..31 Quality Protein Maize research in Ethiopia Leta Tulu, Mosisa Worku, Gelana Seboksa, Jemal Abdurehman, Hadji Tuna, Sewagegne Tariku and S. Twumasi-Afriyie..................... .........39 Session m: Maize Agronomy A review of fertilizer management research on maize in Ethiopia Tolessa Debelle, Tesfa Bogale, Wakene Negassa, Tenaw Worayehu, Minale Liben, Tewodros Mesfin, Burtukan Mekonen and Waga Mazengia ....................... 46 Development of appropriate cultural practices for maize production in Ethiopia Tenaw Workayehu, Waga Mazengia, Beirtukan Mekonen, Tolessa Debelle, Tesfa Bogale, Berhanu Abate, Hussein Mohammed Ali and Tewodros Mesfin....... 56 Development of appropriate cropping systems for various maize producing regions of Ethiopia Tesfa Bogale, Tolessa Debele, Setegn Gebeyehu, Tamado Tana, Negash Geleta and Tenaw Workayehu ............ .........................................61 A review of tillage management research on maize in Ethiopia Worku Ruravu. Tewodros Mesfin. Hussein Mohammed. Tolesa Debelle. Agroforestry-based maize production: Another option to sustain maize yields Abebe Yadessa, Diriba Bekere, Worku Burayu, Tamirat Arficho and Dechasa Jiru.......76 Achievements of the agricultural mechanization research program in developing improved small-scale implements for maize production in the dryland areas of Ethiopia: A review Shilim a Goda ................................................................82 Appropriate conservation tillage practices for maize production under Melkassa conditions Friew Kelemu ..................................................................86 Session IV: Maize Crop Protection Major insect pests of maize and their management: A review Ferdu Azerefegne, Demissew Kitaw and Birhane Asayehegne....................... 89 Maize pathology research in Ethiopia: A review Tewabech Tilahun, Getachew Ayana, Fekede Abebe and Dagne Wegary..............97 Review of weed research in maize in Ethiopia Kassa Yihun, Tolessa Debele, Tolera Abera and GirefSahile...................... 106 Session V: Economics and Extension Maize marketing in Ethiopia: A review Dereje Bacha and Abdissa Gemeda ....................................117 Determinants of adoption of improved maize technologies in major maize growing regions of Ethiopia Tesfaye Zegeye, Bedassa Tadesse and Shiferaw Tesfaye.................... 125 Review of on-farm research and adoption studies on maize in Southern Ethiopia Million Tadesse and Getahun Degu...................................... 137 Research center based maize technology transfer: Efforts and achievements Chimdo Anchala, Aberra Deressa, Shemelis Dejene, Fekadu Beyene, Nigusse Efa, Belete Gebru, Akalu Teshome and Maikel Tesfaye................................ 144 Maize technology adoption in Ethiopia: Experiences from the Sasakawa-Global 2000 agriculture program Takele Gebre ................................................153 Maize technologies: Experience of the Ministry of Agriculture Ibrahim Mohamed and Tamene Terfa.................................... 157 Session VI: Seed Production and Maize Utilization Maize seed production and distribution in Ethiopia Yonas Sahlu and Mulugeta Kahsay ................................ 160 Hybrid maize seed production and commercialization: The experience of Pioneer Hi-Bred Seeds in Ethiopia Adugna Negeri and Melaku Adisu .............................166 l ed production at research centers in Ethiopia ^ lna, Mosisa Worku, Tolessa Debele, Mandefro Nigussie, Leta Tulu, Hussein Mohamed, ene, Girma Chemeda, Tamirat Birhanu and Taye Haile...................... 170 ne precautions for maize seed imported into Ethiopia ew Kidane .............................................................. 176 EJhancing the utilization of maize as food and feed in Ethiopia: Availability, limitations and Opportunities for improvement Dr Iba Geleti, Tessema Zewdu, Shimelis Admasu, Demekash Asregid and Senait Yetneberk. 178 tilization and quality assessment of maize Gima Akalu, Asrat Wondimu, Habtamu Fuffa, Tsegaye Kidane-Mariam and Abraham Besrat... 184 Inegrated food and feed production on small-holder mixed farms: Effect of early harvesting Or variety on maize grain and stover yield and nutritive value of stover Adugna Tolera..................................................... 187 Session VII: Emerging Technologies Suitable zones for growing maize in Ethiopia Friew Kelemu and Girma Mamo.............. ............ . 195 Biotechnology for the improvement of maize for resource poor farmers: The CIMMYT approach S. Mugo and D. Hoisington...................................... 203 Breeding and agronomic approaches to managing abiotic stresses in maize D.K. Friesen, S.R. Waddington, A.O. Diallo and F. Canampiu ...................214 Recent developments in participatory plant breeding for maize in Eastern Africa: Experiences from Eastern Kenya M. Siambi, A.O. Diallo, H. De Groote, D.K. Friesen and W. Muasya............. 223 List of Participants..................................................... 231Library of Congress Subject Headings for this publication: Corn Ethiopia Congresses, Food supply Ethiopia Congresses