Net Yield Efficiency: Comparing Salad and Vegetable Waste between Community Supported Agriculture and Supermarkets in the UK

Urban Farm DB summary

This paper introduced "net yield efficiency" (NYE) to compare food system performance by accounting for yields, loss, and waste. A UK case study compared fresh vegetable and salad waste between a community supported agriculture (CSA) scheme and the supermarket system. The study found that the CSA system wasted only 6.71% by weight across all stages, dramatically outperforming the supermarket system which wasted 40.7–47.7%. These findings highlight significant differences between the systems and suggest NYE offers a more accurate measure of food system performance.