Posted 7/1/2020 16:58 (#8348012 - in reply to #8348002) Subject: RE: Boll weevil eradication program
How about aerial photos? If the government is taking aerial* photos yearly, they probably have a method to identify which fields are likely to have cotton in them. Then, it is a matter of sending someone out to verify. That would be my guess.
* - maybe I should have said "Satellite photos", instead of "aerial photos".... same principle.