In collaboration with RMI and with the support of a grant from the USDA’s Conservation Innovation Grants program, Northern Tilth has initiated field trials on farms in Vermont and New Hampshire investigating the potential use of Water Treatment Residuals (WTRs) to reduce phosphorus run-off from agricultural soils. The study includes a complimentary bench-scale trial using soil incubations of WTR/soil blends to more precisely characterize the soil phosphorus reactions with WTRs. As a final deliverable for the project, Northern Tilth will be developing best management practices for the use of WTRs to reduce soil phosphorus run-off.
