... Database (PPDB)038. ECOTOX was queried in July 2017, by searching for all LD50 values for the honey bee ...
... , 2017) Crop area (acres) Major crops USDA NASS Survey: https://www.quickstats.nass. State, regional, and ...
... the Census when available (1997, 2002, 2007, 2012, 2017), data from NASS in non-Census years, and ...
... the pesticide datasets matching Census years (1997, 2002, 2007, 2012, 2017). We also investigated the ...