-- Defining Dryland Cropping in Sub-Saharan Africa -- Notes -- Chapter 3 Prospects for Genetic Improvement -- Maintaining and … Africa -- Notes -- Chapter 4 Prospects for Improved Crop Management -- Intensification of Input Use -- Conservation ….1 Extensification versus Intensification in the Drylands of Sub-Saharan Africa -- 2.2 Planting is Risky in the Drylands -- 2.3 Intensive …