Designing Impact Evaluations for Agricultural Projects

The purpose of this guideline is to provide suggestions on designing impact evaluations for agricultural projects, particularly projects that directly target farmers, and seek to improve agricultural production, productivity and profitability. Specific issues in evaluating agricultural projects are addressed, including the need to use production-based indicators and to carefully consider indirect or spillover effects that are common in agricultural projects. The guideline considers the challenges of conducting impact evaluations of agricultural projects as well as the methods for assessing impact. Issues of collecting agricultural data for an impact evaluation and how to put together the overall design strategy in an evaluation plan are also covered. The guideline concludes with three case studies of impact evaluations designed for a technology adoption project in the Dominican Republic, a forestry/technology project in Nicaragua, and a crop insurance project in Peru.