I ran across some great resources on climate and agriculture from Iowa State’s Extension program.  While some of them are specific to the Midwest and to corn production, most of them could be used in the Southeast as well.  Check them out at https://store.extension.iastate.edu/Topic/Crops/Climate-and-Agriculture.  Note that although it says “store” all of the items seem to be free for downloading.

clim change and agriculture u2u