Supplementary material to "Crop-specific Management History of Phosphorus Fertilizer Input (CMH-P) in the Croplands of United States: Reconciliation of Top-down and Bottom-up data Sources"

This supplementary material includes the following:1) Historical state-level P fertilizer consumption.2) P fertilizer use in different lands in this study.3) Historical national average crop-specific P fertilizer application rate.4) Application timing and methods.5) Divergence between top-down and bottom-up data sources.6) Comparison of P fertilizer consumption across multiple data sources.7) Fertilized area percentage of P fertilizer among crops in the US. 1 Historical state-level P fertilizer consumption 2 P fertilizer use for different land use types in this study P fertilizer can be used for different land use types in the US, including nonfarm, permanent pasture, cropland pasture, and crops (Table S2).We followed the approach used in Cao et al. ( 2018) and