Okumu, B N; Russel, N; Jabbar, Mohammad A.; Colman, D; … - International Livestock Research Institute (ILRI), … - 2004
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%...