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Animal manure is one of the principal sources of nutrients for soil fertility maintenance and crop production in semi-arid west Africa. Farm-level decisions concerning the use of manure are governed by socioeconomic and institutional factors, as much as they are by agronomic ecological concerns. ...


Williams, Timothy O.[Factors influencing manure application by farmers in semi-arid West Africa]Factors influencing manure application by farmers in semi-arid West Africa

The attainment of food and water security rank high on the agendas of governments in the Middle East and North Africa (MENA) region and sub-Saharan Africa (SSA). Although the objectives are similar, the underlying drivers, resource endowments and opportunities for achieving them are different. Di...


Williams, Timothy O.[Reconciling food and water security objectives of MENA [Middle East and North Africa] and sub-Saharan Africa: is there a role for large-scale agricultural investments?]Reconciling food and water security objectives of MENA [Middle East and North Africa] and sub-Saharan Africa: is there a role for large-scale agricultural investments?

This presentation concerns the key property rights issues arising in the West African Semi-Arid Tropics (WASAT). The WASAT contains three main agro-climatic zones: Sahel (300–600 mm of annual rainfall falling in 2.5–4 months); Sudanian (600–900 mm, 4 to 6 month rainy season); an...


Williams, Timothy O.[Traditional strategies and adaptive resource use by crop-livestock producers in the Sahel]Traditional strategies and adaptive resource use by crop-livestock producers in the Sahel

The attainment of food and water security rank high on the agendas of governments in the Middle East and North Africa (MENA) region and sub-Saharan Africa (SSA). Although the objectives are similar, the underlying drivers, resource endowments and opportunities for achieving them are different. Di...


Williams, Timothy O.[Reconciling food and water security objectives of MENA [Middle East and North Africa] and sub-Saharan Africa: is there a role for large-scale agricultural investments?]Reconciling food and water security objectives of MENA [Middle East and North Africa] and sub-Saharan Africa: is there a role for large-scale agricultural investments?

Three papers are reviewed in this paper. The first paper presents a model of biological processes to investigate long-term effects of soil and crop long-erm effects of soil and crop management strategies while the other two papers present approaches to study crop production strategies at the ente...


Fernández Rivera, S.Hiernaux, Pierre H.Y.Kaufmann, Ralph R. vonTurner, M.Williams, Timothy O.[Response to case studies of eco-regional approaches at the farm/enterprise level]Response to case studies of eco-regional approaches at the farm/enterprise level

This chapter investigates the options for improving the performance of small ruminants interms of their contribution to household incomes. The characteristics of the existing production system are first sketched in order to identify the resource requirements and constraints of the system. Based o...


Williams, Timothy O.[Scope for improvement of small ruminant production in the Sahel]Scope for improvement of small ruminant production in the Sahel

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