Been looking through this but haven't found anything related to shapefiles mapped to crops on land. In particular I am wondering if there is data on the plots of land mapped to the specific crops on the land, down to the scale of a county/town/village across the world. If not, what the major sources are and where the specific / detailed town-by-town ones would be if there's not a central source like the USGS or USDA (like if I should just look at the nation websites for each place, or whatnot).
Other searches I've done:
This looks like one small piece, but just for a specific year and place, and I don't think it's free/open.