Potential Benefits of Agricultural Research and Extension in Peru
用事前消费者-生产者剩余框架，评估秘鲁五种农产品的农业研究与推广收益，并考虑需求变化和政府定价政策的影响，发现公共投资回报率很高。
Abstract The benefits of agricultural research and extension are examined in an ex ante consumer‐producer surplus framework for five commodities in Peru. The effects of demand shifts over time and government pricing policies on research and extension benefits are considered. Data for the analysis include the results of research and extension questionnaires administered at seven sites in Peru. The projected rates of return to research and extension indicate substantial returns to public investments.