Ogendo, J.O., Belmain, S.R. ORCID: https://orcid.org/0000-0002-5590-7545, Deng, A.L. and Walker, D.J. (2003) Comparison of toxic and repellent effects of Lantana camara L. with Tephrosia vogelii hook and a synthetic pesticide against Sitophilus zeamais motschulsky (Coleoptera: Curculionidae) in stored maize grain. International Journal of Tropical Insect Science, 23 (02). pp. 127-135. ISSN 1742-7584 (doi:10.1017/S1742758400020348)

Tripp, R., Walker, D.J., Opoku-Apau, A., Dankyi, A.A. and Delimini, L.L. (1998) Seed management by small-scale farmers in Ghana. A study of maize and cowpea seed in the Brong-Ahafo and Volta regions (NRI Bulletin 68). [Working Paper]

Tripp, R., Walker, D.J., Miti, F., Mukumbuta, S. and Zulu, M.S. (1998) Seed management by small-scale farmers in Zambia. A study of cowpea, groundnut and sorghum seed in the Southern and Western Provinces (NRI Bulletin 76). [Working Paper]