Peer-reviewed Impact Publications

Douthwaite, B., Schulz, S., Olanrewaju, A.S. and Ellis_Jones, J. (2006). Impact pathway evaluation of an integrated Striga hermonthica control project in northern Nigeria. Agricultural Systems (forthcoming).

Franke, A. C., Ellis_Jones, J., Tarawali, G., Schulz, S., Hussaini, M. A., Kureh, I., White, R., Chikoye, D., Douthwaite, B., Oyewole, B. D. and Olanrewaju, A. S. (2006). Evaluating and scaling-up integrated Striga hermonthica control technologies among farmers in northern Nigeria. Crop Protection 25, 868-878.

Tipilda, A., Alene, A.D., Manyong, V.M. and Singh, B.B. (2006). Intra-household impact of improved dual-purpose cowpea on women in Northern Nigeria. Accepted for International Journal of Agricultural Sustainability.

Kristjanson, P., Okike, I., Tarawali, S., Singh, B. B. and Manyong, V.M. (2005). Farmers' perceptions of benefits and factors affecting the adoption of improved dual- purpose cowpea in the dry savannas of Nigeria. Agricultural Economics, 32:195-210.

Ellis_Jones, J., Schulz, S., Douthwaite, B., Hussaini, M. A., Oyewole, B. D. and Olanrewaju, A. S., White, R. (2004). An assessment of integrated Striga hermonthica control and early adoption by farmers in northern Nigeria. Experimental Agriculture 40, 353-368.

Emechebe, A. M., Ellis_Jones, J., Schulz, S., Chikoye, D., Douthwaite, B., Kureh, I., Tarawali, G., Hussaini, M. A., Kormawa, P. and Sanni, A. (2004). Farmers' perception of the Strga problem and its control in northern Nigeria. Experimental Agriculture 40, 215-232.

Franke, A. C., Shulz, S., Oyewole, B. D. and Bako, S. (2004). Incorporating short season legumes and green manure crops into maize based systems in the moist Guinea savanna of West Africa. Experimental Agriculture, 40: 463-479.

Kormawa, P. M., Ezedinma, C. I. and Singh, B. B. (2004). Factors influencing farmer-to-farmer transfer of an improved cowpea variety in Kano State, Nigeria. Journal of Agriculture and Rural Development in the Tropics and Sub tropics, 105 (1): 1-13.

Nkumbira, J., Chiwona-Karltum, L., Lagercrantz, U., Mahungu, N.M., Saka, J., Mhone, A., Bokanga, M., Brimmer, K., Gullberg, U and Rosling, H. (2003). Classification of Cassava into `bitter' and `cool' in Malawi: From farmers' perception to characterization by molecular markers. Euphytica 132 (1): 7 - 22

Schulz, S., Honlonkou, A.M., Carsky, R.J., Manyong, V.M., and Oyewole, B. (2003).Alternatives to mucuna for soil fertility management in Southern Benin: farmers perception and use of traditional and exotic grain legumes. Experimental Agriculture, 39: 267-278.

Schulz, S., Hussaini, M. A., Kling, J., Berner, G. and Ikie, F. O. (2003). Evaluation of integrated Striga hermonthica control technologies under farmer management. Experimental Agriculture 39, 99-108.

Douthwaite, B. (2002). Enabling innovation: A practical guide to understanding and fostering technological change. London: Zed books.

Douthwaite, B., de Haan, N., Manyong, V. M., and Keatinge, D. (2001). Blending "hard" and "soft" science: The follow the technology approach to catalyzing and evaluating technology change. Conservation Ecology 5

Adesina, A.A., and Baidu-Forson, J. (1995). Farmers' perceptions and adoption of new agricultural technology: Evidence from analysis in Burkina Faso and Guinea, West Africa. Agricultural Economics, 13: 1-9.

Adesina, A.A., and Seidi, S. (1995). Farmers' perceptions and adoption of new agricultural technology: Analysis of modern mangrove rice varieties in Guinea. Bissau. Quarterly Journal of International Agriculture, 34: 358-371.

Larbi, A.; Jabbar, M.A.; Atta-Krah, A.N.; Cobbina, J. (1993). Effect of taking a fodder crop on maize grain yield and soil chemical properties in Leucaena and Gliricidia alley farming systems in Western Nigeria. Experimental Agriculture, 29(3): 317-321

Unamma, R.P.A., Udealor, A., Anuebunwa, F.O., Ezulike, T.O. and Ezumah, H.E. (1992). Evaluation of the effect of compound fertilizer rates on the productivity of cassava/maize/egusi/melon intercrop under the farmers production systems. Rural Development in Nigeria, 4(2): 91-97.

Dvorak, K.A. (1991). Methods of on-farm, diagnostic research on adoption potential of alley cropping. Agroforestry Systems, 15(2&3): 167-181.

Leihner, D., Allison, B.E., Bernard, M., Akonde, P. and Kang, B .T. (1990). Growth analysis of a cassava (maize) alley cropping system. Standortgemaesse Landwirtschaft in West Africa: 245-271.

Other Impact Publications

Tipilda, A., Alene, A.D., Manyong, V.M. and Singh, B.B. (2005). Improved Cowpea Package: Intra-household Impact. Poster paper presented at the IITA Board of Trustees meeting, 18 May 2005, Ibadan.

Wakatsuki, T. Buri, M., and Fashola, O.O. (2004). Rice green revolution and restoration of degraded inland vallies watersheds in West Africa through participatory and self-support. Sawah development Page 304 in in participatory strategy for soil and water conservation, edited by M. Mihara and E. Yamoji. ERECON, Tokyo, Japan.

Manyong, V.M., Asiedu, R. and Olaniyan, G. O. (2001). Farmers' perceptions of, and actions on, resource management constraints in the yam-based systems of western Nigeria. Pages 156 - 167. In Akoroda M.O. and Ngeve J. M Root Crops in the 21st Century. Proceedings of the 7th Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB). 11 - 17 October 1998. Centre International des Conférences, Cotonou, Bénin.

Manyong, V.M. and Nokoe, S. K. (2001). Modelling of yam production for effective policy formulation. Proc. 8th ISTRC-AB symposium, IITA, Ibadan

Nokoe, S. K. (2001). Augmented block design (ABD): The choice design for large scale farmer participatory on-farm trials. Proc. 8th ISTRC-AB symposium, Ibadan

Dvorak, K.A. (1996). Adoption potential of alley cropping: final project report Ibadan, Nigeria: International Institute of Tropical Agriculture (IITA).

Versteeg, M.N. and Koudokpon, V. (1994). Participative farmer testing of low input technologies. IITA Research, 5-8

Mitti, G.A.S. and Mitti, J.M.M (1991). On-farm research experience with improved cowpea cultivars. Pages 45-52 In IITA Trends in cowpea research: Proceedings of the cowpea research seminar, Harare, Zimbabwe, 25-26 September 1991