Differentiating the Value and Cost of Compost Across Likely Farm Use Scenarios in Western Washington

This report evaluates the economic value of compost across representative crop production scenarios in western Washington, comparing its cost to potential returns for farmers. Using enterprise budgets and literature-informed yield response assumptions, the analysis models compost use in winter wheat, blueberries, raspberries, and direct market mixed vegetables. Results show that compost value varies widely by crop type and application rate. For lower-value crops such as wheat and blueberries, estimated compost value does not exceed costs, while for higher-value crops such as raspberries and mixed vegetables, compost can generate net economic benefits. The analysis highlights how transportation, application costs, and crop market value strongly influence outcomes. It also emphasizes uncertainty in agronomic responses and the importance of site-specific conditions. Overall, the report demonstrates that compost can be economically viable in certain systems, particularly where high crop value and favorable logistics align.