Essential Nutrients
Soil Characteristics
Plant Needs
Nutrient Cycle
Slowing Yield Growth
Slowdown in Investment
Nutrient Overapplication and Environmental Contamination
Climatic Conditions and Soil Management
Property Rights, Land Constraints, and Demographic Pressures on Soil Fertility
The Cumulative Effect of Negative Nutrient Balances
Declining Soil Fertility
Government Commitment to Agriculture and Structural Adjustment
The Need for Concerted Action
Integrated Nutrient Management
Goal of INM
Plant Nutrient Application
Nutrient Conservation and Uptake
Untapped Nutrient Sources
Internal Nutrient Sources
Research
Extension
Participation