Advances in Integrated Soil Fertility Management in sub-Saharan Africa: Challenges and Opportunities

food Insecurity Is A Central Concern And A Fundamental Challenge For Human Welfare And Economic Growth In Africa. Low Agricultural Production, Results In Low Incomes, Poor Nutrition, Vulnerability To Risks And Lack Of Empowerment. Land Degradation And Soil Fertility Depletion Are Considered The Major Threats To Food Security And Natural Resource Conservation In Sub-saharan Africa (ssa). Investments In Technology, Policy And Institutional Reforms Are Needed To Increase Agricultural Productivity To Ensure Food Security And Sustained National Economies. Past Research Has Generated Numerous Soil Fertility Management Technologies Which If Adopted Could Propel The African Continent Out Of The Poverty Trap. However, These Technologies Have Had Little, If Any, Impact Due To Low Adoption By The Smallholder Farmers. Africa Needs To Break The Cycle Between Poverty And Land Degradation By Employing Strategies That Empower Farmers Economically And Promoting Sustainable Agricultural Intensification Using Efficient, Effective And Affordable Agricultural Technologies. In Addition, Farmers And Local Entrepreneurs Need To Be Linked To Markets To Increase Their Capacities To Invest In Sustainable Land Management. All These Requirements Need To Be Achieved Through An Integrated Soil Fertility Management (isfm) Approach That Is Holistic And Dynamic In Order To Foster Both Technical And Institutional Change. Front Matter....Pages I-XVIII A critical analysis of challenges and opportunities for soil fertility restoration in Sudano-Sahelian West Africa....Pages 1-28 Appropriate technologies to replenish soil fertility in southern Africa....Pages 29-43 Available technologies to replenish soil fertility in East Africa....Pages 45-62 Integrated Agricultural Research for Development: contributing to the Comprehensive Africa Agricultural Development Programme (IAR4D in CAADP)....Pages 63-73 From Thousands to Millions: Accelerating Agricultural Intensification and Economic Growth in Sub-Saharan Africa....Pages 75-84 Soil science, population growth and food production: some historical developments....Pages 85-97 Development of an arable layer: A key concept for better management of infertile tropical savanna soils....Pages 99-104 Food Security in Africa: The Challenges of Researchers in the 21 st Century....Pages 105-113 Background, Current status and the African Context of the International Nitrogen Initiative....Pages 115-119 Within-farm soil fertility gradients affect response of maize to fertiliser application in western Kenya....Pages 121-132 Characterisation of soil degradation under intensive rice production in Office du Niger zone of Mali....Pages 133-138 Soil fertility issues in the Blue Nile Valley, Ethiopia....Pages 139-148 Overcoming phosphorus deficiency in soils of Eastern Africa: recent advances and challenges....Pages 149-160 Relative contribution of trees and crops to soil carbon content in a parkland system in Burkina Faso using variations in natural 13C abundance....Pages 161-169 Mineral fertilizers, organic amendments and crop rotation managements for soil fertility maintenance in the Guinean zone of Burkina Faso (West Africa)....Pages 171-177 Effect of planting technique and amendment type on pearl millet yield, nutrient uptake, and water use on degraded land in Niger....Pages 179-193 Short-term effects of cover crops on stem borers and maize yield in the humid forest of southern Cameroon....Pages 195-199 Improving cereal productivity and farmers’ income using a strategic application of fertilizers in West Africa....Pages 201-208 Advances in improving Agricultural Profitability and Overcoming Land Degradation in Savanna and Hillside Agroecosystems of Tropical America....Pages 209-229 Integrating legumes to improve N cycling on smallholder farms in sub-humid Zimbabwe: resource quality, biophysical and environmental limitations....Pages 231-243 Meat and bone meal as nitrogen and phosphorus fertilizer to cereals and rye grass....Pages 245-253 Screening Legume Green Manure for Climatic Adaptability and Farmer Acceptance in the Semi-Arid Agro-ecological Zone of Uganda....Pages 255-259 Nutrient flows in smallholder production systems in the humid forest zone of southern Cameroon....Pages 261-276 Management of improved fallows for soil fertility enhancement in the western highlands of Cameroon....Pages 277-282 Integrated Soil Fertility Management: Use of NUTMON to Quantify Nutrient Flows in Farming Systems in Central Kenya....Pages 283-288 Optimizing Soil Fertility Gradients in the Enset ( Ensete ventricosum )labelChapter26 Systems of the Ethiopian Highlands: Trade-offs and Local Innovations....Pages 289-297 Consequences of Field Management and Soil Erosion on the Sustainability of Large Scale Coffee Farming in Kiambu....Pages 299-309 The Use of Erosion Proxies for the Spatial Assessment of Erosion in a Watershed and Modelling the Erosion Risk in a GIS....Pages 311-323 Bean Improvement for Low Soil Fertility Adaptation in Eastern and Central Africa....Pages 325-332 Combining Tithonia diversifolia and minjingu phosphate rock for improvement of P availability and maize grain yields on a chromic acrisol in Morogoro, Tanzania....Pages 333-344 Improving food production using ‘best bet’ soil fertility technologies in the Central highlands of Kenya....Pages 345-351 Effects of organic and mineral sources of nutrients on maize yields in three districts of central Kenya....Pages 353-358 Effect of Combining Organic Leafy Biomass and Inorganic fertilizer on Tomato Yields and nematodes control in Arenosols in Kinshasa Area....Pages 359-364 Nutrient Dynamics On Smallholder Farms In Teghane, Northern Highlands Of Ethiopia....Pages 365-378 Nitrogen-15 Recovery in Cropped Soil Cores Fertilized With Potassium Nitrate and Clover Residues....Pages 379-388 Evaluation of nitrogen fixation using 15 N dilution methods and economy of a maize-tepary bean intercrop farming system in semi-arid SE-Kenya....Pages 389-400 Evaluation of cowpea genotypes for variations in their contribution of N and P to subsequent maize crop in three agro-ecological zones of West Africa....Pages 401-412 Variability of cowpea breeding lines to low phosphorus tolerance and response to external application of Phosphorus....Pages 413-422 The potential benefits of Azolla , Velvet bean ( Mucuna pruriens var. utilis ) and N fertilizers in rice production under contrasting systems in eastern Uganda....Pages 423-434 Tied-ridging and integrated nutrient management options for sustainable crop production in semi-arid eastern Kenya....Pages 435-442 Economic evaluation of local inputs in Meru South District, Kenya....Pages 443-448 Effect of Rock Phosphate, Lime and Green Manure on Growth and Yield of Maize in a Non Productive Niche of a Rhodic Ferralsol in Farmer’s Fields....Pages 449-456 Changes in Soil Organic Matter as Influenced by Organic Residue Management Regimes in Selected Experiments in Kenya....Pages 457-470 Effects of manure application on crop yield and soil chemical properties in a long-term field trial in semi-arid Kenya....Pages 471-486 Nutrient Recovery from Solid Waste and Linkage to Urban and Peri-Urban Agriculture in Nairobi, Kenya....Pages 487-492 Optimising crop productivity in legume-cereal rotations through nitrogen and phosphorus management in western Kenya....Pages 493-502 Evaluation of the Potential of Using Nitrogen Fixing Legumes in Smallholder Farms of Meru South District, Kenya....Pages 503-510 Improved cassava varieties increase the risk of soil nutrient mining: an ex-ante analysis for western Kenya and Uganda....Pages 511-520 Partial balance of nitrogen in a maize cropping system in humic nitisol of Central Kenya....Pages 521-530 Integrated Soil Fertility Management Technologies: A Counteract to Existing Milestone in Obtaining Achievable Economical Crop Yields in Cultivated Lands of Poor Smallholder Farmers in Malawi....Pages 531-536 Fertilizer nitrogen recovery as affected by soil organic matter status in two sites in Kenya....Pages 537-546 Performance evaluation of various agroforestry species used in short duration improved fallows to enhance soil fertility and sorghum yields in Mali....Pages 547-556 Nutrient balances for different farm types in Southern Mali....Pages 557-566 Increasing the Productivity and Sustainability of Millet Based Cropping Systems in the Sahelian Zones of West Africa....Pages 567-574 Comparative short-term effects of different quality organic resources on maize productivity under two different environments in Zimbabwe....Pages 575-588 Improving soil fertility through the use of organic and inorganic plant nutrient and crop rotation in Niger....Pages 589-598 Biological system for improving the availability of Tilemsi phosphate rock for wheat (Triticum aestivum L.) cultivated in Mali....Pages 599-610 Managing manure heaps with agro-organic wastes and cover to reduce nitrogen losses during storage on smallholder farms....Pages 611-618 Soil characteristics and the performance of sorghum ( Sorghum bicolor (L) Moench) on tin mine spoils of the Jos Plateau, Nigeria....Pages 619-628 The development of a prototype land information system for the northern Guinea savanna of Nigeria as a basis for agro-technology transfer....Pages 629-646 What role can planted fallows play in the humid and sub-humid zone of West and Central Africa?....Pages 647-668 Balanced Nutrient Management System Technologies In The Northern Guinea Savanna Of Nigeria: Validation And Perspective....Pages 669-678 Impacts of vegetative contour hedges on soil inorganic-N cycling and erosional losses in Arable Steep-lands of the Central Highlands of Kenya....Pages 679-689 Relationships between rhizobial diversity and host legume nodulation and nitrogen fixation in tropical ecosystems....Pages 691-702 Limestone, Minjingu Phosphate Rock and Green Manure Application on Improvement of Acid Soils in Rwanda....Pages 703-712 Evaluating performance and yield stability of some groundnut ( Arachis hypogaea L. ) varieties under irrigation in three agroecological zones of the Senegal River Valley....Pages 713-722 Assessment of the contribution of tied ridges and farmyard manure application to sorghum production in semi-arid areas of Tanzania....Pages 723-730 Evaluation of Gliricidia sepium, Casuarina junghuhniana and Faidherbia albida tree species for improvement of crop production and fuelwood supply in Muheza districts, Tanzania....Pages 731-736 Mineral N distribution in the soil profile of a maize field amended with cattle manure and mineral N under humid sub-tropical conditions....Pages 737-748 Intensity cultivation induced effects on soil organic carbon dynamic in the western cotton area of Burkina Faso....Pages 749-758 Assessment of improved soil fertility and water harvesting technologies through community based on-farm trials in the ASALs of Kenya....Pages 759-766 Profitability of agro-forestry based soil fertility management technologies: the case of small holder food production in Western Kenya....Pages 767-780 Integrated natural resources management a strategy for food security and poverty alleviation in Kwalei village, Lushoto district, Tanzania....Pages 781-786 Effects of total inorganic nitrogen and phosphorus availability on Maize Yields in the First post Tephrosia vogelii fallow....Pages 787-794 Environmental hazards in African agriculture: factors influencing application of agrochemicals in Nakuru district, Kenya....Pages 795-804 Assessment of indigenous soil and water conservation technology for smallholder farms in semi-arid areas in Africa and close spaced trash lines effect on erosion and crop yield....Pages 805-814 Prosopis africana (Guill., Perrot et Rich.) Taub and Entada africana (Guill. et Perrot.) leaf litter decomposition and impact of biomass transfer on millet ( Pennisetum glaucum (L.) R. Br.) growth and development on station in Niger....Pages 815-826 Soil microbial biomass carbon and nitrogen as influenced by organic and inorganic inputs at Kabete, Kenya....Pages 827-832 Evaluating effect of mixtures of organic resources on nutrient release patterns and uptake by maize....Pages 833-844 Mycorrhizal associations as indicators of forest quality after land use practices....Pages 845-854 Biomass production, N and P uptake of Mucuna after Bradyrhizobia and Arbuscular mycorrhizal fungi inoculation, and P-application on acid soil of Southern Cameroon....Pages 855-864 Evaluating the effect of Bacillus and Rhizobium . bi-inoculant on nodulation and nematode control in Phaseolus vulgaris L....Pages 865-872 Integrated Soil Fertility Management Technologies:review for scaling up....Pages 873-880 Costs and Returns of Soil Fertility Management Options in Western Kenya....Pages 881-890 Modeling farmers’ decisions on integrated soil nutrient management in sub-Saharan Africa: A multinomial Logit analysis in Cameroon....Pages 891-904 Opportunities for and constraints to adoption of improved fallows: ICRAF’s experience in the humid tropics of Cameroon....Pages 905-914 The Effect of Socio-Economic Factors on a Farmer’s Decision to Adopt Farm Soil Conservation Measures. An Application of Multivariate Logistic Analysis in Butere/Mumias District, Kenya....Pages 915-920 Farmer’s perception of planted calliandra tree fallows for shortening fallow cycles in southern Cameroon....Pages 921-932 Policies, Institutions and Market Development to Accelerate Technological Change in the Semiarid Zones of Sub-Saharan Africa....Pages 933-940 Factors Influencing Choice and Adoption of Integrated Soil Fertility Management Technologies in Central Kenya Highlands....Pages 941-946 Social capital and adoption of soil fertility management technologies in Tororo district, Uganda....Pages 947-954 Adoption of Leguminous Trees/Shrubs, Compost and Farmyard Manure (FYM) As Alternatives to Improving Soil Fertility in Trans Nzoia District-Kenya....Pages 955-960 Participatory Diagnosis in the Eastern Drylands of Kenya: Are Farmers aware of their Soil Fertility Status?....Pages 961-968 On-Farm Evaluation and Scaling-up of Soil Fertility Management Technologies in Western Kenya....Pages 969-978 The Resources-to-Consumption System: A Framework for Linking Soil Fertility Management Innovations to Market Opportunities....Pages 979-992 Scaling Up Options on Integrated Soil Fertility management in Western Kenya: The Case of COSOFAP: Challenges and Opportunities....Pages 993-1000 Socio-Economics of Soil Conservation in Kericho District, Kenya....Pages 1001-1012 Market Integration and Conduct Analysis: An Application to Cattle Markets in Uasin Gishu District, Kenya....Pages 1013-1018 Factors determining integrated soil fertility management in central Kenya highlands: Participatory Learning and Action (PLAR) model analysis....Pages 1019-1026 Spatial Pricing Efficiency and Regional Market Integration of Cross-Border Bean ( shape Phaseolus Vulgaris L. ) Marketing in East Africa: The Case of Western Kenya and Eastern Uganda....Pages 1027-1034 Assessment of farmers’ perceptions of soil quality indicators within smallholder farms in the central highlands of Kenya....Pages 1035-1046 Initiating Rural Farmers to Participatory Research: Case of Soil Fertilization in Bushumba, East of DR. Congo....Pages 1047-1050 Farmers’ participation in soil fertility management research process: Dilemma in rehabilitating degraded hilltops in Kabale, Uganda....Pages 1051-1060 Integrated Soil Fertility Management and Poverty Traps in Western Kenya....Pages 1061-1076 Moving methodologies to enhance agricultural productivity of rice-based lowland systems in sub-Saharan Africa....Pages 1077-1091