Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Nutrient Application (Phosphorus and Nitrogen ) for Fertilizer and Manure Applied to Crops (Cropsplit), 2002
This data set represents the estimated amount of phosphorus and nitrogen fertilizers applied to 
selected crops for the year 2002, compiled for every catchment of NHDPlus for the conterminous 
United States. The source data set is based on 2002 fertilizer data (Ruddy and others, 2006) and 
tabulated by crop type per …