The ecological fundamentals of the contraints
Characteristics of traditional rainfed agriculture in the tropics
The soils of the tropics and their key role in an ecological context
The seeming contradiction between lush natural vegetation and poor agricultural crops on nutrient-poor soils of the humid tropics
The ecologically exceptional regions of the humid tropics
The ecological conditions in the seasonally wet-and-dry outer-tropics
Modern attempts at solving the problems of tropical agricultural; the persistence of the ecological constraints
The Green Revolution in the tropical realm
International attempts at the level of research institutions
Practical attempts at applying new farming techniques
