Development is a human problem and is aimed at changing man and his economic, social, ecological environment. Throughout history, man has acquired new knowledge to shape his future. As human needs multiplied and became more complex, science and technology – processes of systematic inquiry for...

A dynamic bio-economic model is used to show that, without technological and policy intervention, soil nutrient balances, income and nutrition could not be substantially or sustainably improved in a highland area of Ethiopia. Although cash incomes could rise from a very low base by more than 50%...

The Multi-purpose Tree (MPT) species have the ability to fit into the farming systems of the East African region where low agricultural productivity, widespread land degradation and hence a diminishing capacity to support the growing human and livestock population are major problems. GIS has...

It is argued that information on farmer knowledge about characteristics, adaptability and management needs of different species and breeds of domestic animals, and farmer preferences about these traits are useful inputs in designing breeding policy and conservation strategy. The argument is...

This paper is a query about the determinants of individuals contribution to the production of local public goods subject to important indivisibilities. It is based on an econometric study of factors accounting for variations in individual participation in the construction of a central drainage...