Aina, P.Kang, B.Morin, J.Sant'Anna, R.Ofori, C.Opara-Nadi, O.Valentin, C.Elwell, H.Food and Agriculture Organization of the United Nations.‏ United Nations Development Programme2016-04-192016-04-191993FAO Soils Bulletin 6992-5-103442-7http://hdl.handle.net/10919/65448Metadata only recordThis publication contains material gathered for a training course on tillage and residue management in Africa. The course was held in 1991 in Nigeria to give participants the opportunity to discuss technologies of tillage practices in the various countries, update their knowledge on the subject and provide them with the basic principles on which to develop appropriate tillage and residue management packages for the specific soils in their countries. It was hoped that the course would give the participants a firm foundation and would stimulate the beginning of programmes for sustainable agricultural production.text/plainen-USIn CopyrightSoil degradationSoil erosionSoil conservationSoil managementSoilSustainable agricultureConservation tillageAgricultureField ScaleAbstractFAO 1993