That sort of database would be great to have, and I wouldn't be surprised if it exists already in one or another national agricultural-extension service. ("Agri

That sort of database would be great to have, and I wouldn't be surprised if it exists already in one or another national agricultural-extension service. ("Agricultural extension" is an old -- 1914 -- term for continuing education for farmers, giving advice on crop selection, land management, etc.) The US's is CSREES: https://en.wikipedia.org/wiki/Cooperative_State_Research,_Education,_and_Extension_Service https://en.wikipedia.org/wiki/Cooperative_State_Research,_Ed... (Wikipedia describes their homepage as https://nifa.usda.gov/ https://nifa.usda.gov/ . If that's really the right link, it could use a serious redesign...)