Interactions between Agriculture and Industry: Theoretical Analysis of the Consequences of Discriminating Agriculture in Sub–Saharan Africa

Many countries in sub–Saharan Africa discriminated against agriculture to promote industry after independence. The domestic terms of trade were turned against agriculture by the price fixing of monopoly marketing boards. This policy was assumed to reduce labor costs of industry and was combined with overvaluation of the currency, protectionism, and priority rationing of imported inputs to industry. The region got the worst of both worlds—stagnation in both agriculture and industry. What went wrong? In a dual model designed to represent characteristics of the region, discrimination of agriculture is shown to contract industry through trade linkages. Export–oriented agriculture has been held back, and import–dependent industries have suffered because of the foreign exchange constraint. In a dynamic extension assuming learning–by–doing in industry and catching–up in agriculture, it is shown that discrimination against agriculture may reduce the growth rate of the economy and the technological advantage of industry.