Browsing by Author "de Jager, A."
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- Exploring new pathways for innovative soil fertility management in KenyaOnduru, D.; de Jager, A.; Gachini, G.; Diop, J. (International Institute for Environment and Development, 2001)This working paper discusses the impact of a multi-institutional research programme in low potential areas of Kenya. The programme elaborated nutrient balances, combined with economic analysis, to better understand causes and effects of soil fertility decline. Alongside, better soil fertility management practices were developed using a participatory technology approach. This paper assesses to what extent farmers changed their practices, if the program has influenced way of working with extension and research, or has led to better informed policies.
- Farm household strategies for food security in Northern Ghana: A comparative analysis of high and low population farming systems sustainable food security in West AfricaAl-Hassan, R. M.; Famiyeh, J. A.; de Jager, A. (Dordrecht, The Netherlands: Kluwer Academic Publishers, 1997)
- Managing soil fertility in Africa: Diverse settings and changing practiceHilhorst, T.; Muchena, F.; Defoer, T.; Hassink, J.; de Jager, A.; Smaling, E.; Toulmin, C. (International Institute for Environment and Development, 2000)This publication is the introductory chapter of the book, Nutrients on the move: Soil fertility dynamics in African farming systems; it summarizes the main findings of soil fertility case studies in six African countries. Key biophysical and socioeconomic constraints on production by smallholder farmers and the possibilities for improving agricultural productivity in Africa are highlighted. The case studies seek to find what is actually happening at farm and field level, how soil fertility management varies between different fields, farmers and locations, and what are the implications for interventions aimed at improving soil fertility management.