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Federal
USDA Legacy P project: P lability in soils and sediments
Department of Agriculture —
The USDA Legacy Phosphorus Project seeks to leverage watershed research with USDA NRCS (Natural Resource Conservation Service) and USDA ARS (Agricultural Research... -
Federal
Watershed-scale agricultural phosphorus balances and river export trends for the conterminous United States, 1992-2012
Department of the Interior —
This product consists of two tabular datasets and associated metadata for major phosphorus fluxes including manure and fertilizer inputs, crop uptake, as well as...