Soil degradation and nutrient depletion have become serious threats to agricultural productivity in Africa. Soils cannot supply the quantities of nutrients required and yield levels decline rapidly once cropping commences.
Intro Contributors Preface Introduction 1 Forty Years of Soil Fertility Work in Sub-Saharan Africa 2 Soil Fertility Replenishment Takes Off in East and Southern Africa 3 A Systems Approach to Target Balanced Nutrient Management in Soilscapes of Sub-Saharan Africa 4 In for a Penny, in for a Pound: Strategic Site-selection as a Key Element for On-farm Research that Aims to Trigger Sustainable Agricultural Intensification in West Africa 5 Agricultural Transformation and Fertilizer Use in the Cerealbased Systems of the Northern Guinea Savannah, Nigeria 6 Partial Macronutrient Balances of Mucuna/Maize Rotations in the Forest Savannah Transitional Zone of Ghana 7 Process Research and Soil Fertility in Africa: Who Cares? 8 Fertilizer Equivalency Values of Organic Materials of Differing Quality 9 Plant N Uptake from Plant and Animal Organic Residues, Measured Using the Soil Pre-labelling 15N Isotope Dilution Approach 10 Contribution of Organic Residues to Soil Phosphorus Availability in the Highlands of Western Kenya 11 Resource Acquisition of Mixed Species Fallows - Competition or Complementarity? 12 Targeting Management of Organic Resources and Mineral Fertilizers: Can we Match Scientists' Fantasies with Farmers' Realities? 13 Direct Interactions between N Fertilizer and Organic Matter: Evidence from Trials with 15N-labelled Fertilizer 14 On-farm Evaluation of the Contribution of Sole and Mixed Applications of Organic Matter and Urea to Maize Grain Production in the Savannah 15 Yield Trends, Soil Nitrogen and Organic Matter Content During 20 Years of Continuous Maize Cultivation 16 Meeting the Phosphorus Needs of the Soils and Crops of West Africa: the Role of Indigenous Phosphate Rocks 17 Options for Increasing P Availability from Low Reactive Phosphate Rock. 18 Phosphorus Uptake from Sparingly Available Soil-P by Cowpea (Vigna unguiculata) Genotypes 19 Improving Phosphate Rock Solubility and Uptake and Yields of Lowland Rice Grown on an Acidic Soil Amended with Legume Green Manure 20 Decision Making on Integrated Nutrient Management through the Eyes of the Scientist, the Land-user and the Policy Maker 21 Legumes: When and Where an Option? (No Panacea for Poor Tropical West African Soils and Expensive Fertilizers) 22 Options for Soil Organic Carbon Maintenance under Intensive Cropping in the West African Savannah 23 On-farm Research and Operational Strategies in Soil Fertility Management 24 Recommendations Index.
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Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2021. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.