-
Federal
Water quality data
U.S. Environmental Protection Agency —
The ZTRAX data is a national database of property sales collected by Zillow. The data is available to researchers who submit a research proposal to Zillow. Portions... -
Federal
Data from: Nitrogen rate influences on protein concentration, yield, and NDVI in spring wheat following pea and cover crop mixture
Department of Agriculture —
Tabular data including average wheat grain yield, wheat grain protein concentration, NDVI readings, nugget:sill ratio, nitrogen rate treatment assignments at two...