1. Chalulo, L.A., Findlay, J.B.R., Haag, W.L., Juga, R.C., Langa M., Majone, L.R., Mariote, D., Matimele, J., Pantazis, V., Pires, C., 1998. Zero-tillage technology in Mozambique: progress to date and future prospects. In: Benites, J., Chuma, E., Fowler, R., Kienzle, J., Molapong, K., Manu, J., Nyagumbo, I., Steiner, K., Veenhuizen, R.V. (Eds.), Conservation Tillage for Sustainable Agriculture Proceedings: Part II of International Workshop, Harare, Zimbabwe, 22–27 June, pp. 147–150.
2. Ekboir, J., Boa, K., Dankyi, A.A., 2002. Impacts of No-till Technologies in Ghana. CIMMYT, Mexico D.F.
3. Development of conservation tillage in African countries: a partnership approach;Findlay,1999
4. Findlay, J.B.R., Collins, S.C., Boa-Amponsen, K., Mabuza, S., Miheso, V., 2002. Conservation tillage programmes for small-holder farmers in Africa. In: American Society of Agronomy Congress Symposium on Conservation Agriculture for Small-Scale Farmers in Developing Countries, Indianapolis, USA, 10–14 November.
5. Food and Agriculture Organization of the United Nations, 2004. FAOSTAT [available at http://apps.fao.org/default.jsp].