If you are driving from Atlanta, I would recommend driving south and stopping to eat a real southern lunch at Yoder's outside of Montezuma GA.
http://www.southerncomfortfood.com/Yoders_Deitsch_Haus.htm
If you continue your drive toward White Oak Pastures and to Peace Valley Market, you will be driving through huge fields of peanuts, cotton and soybeans. Maybe some corn some of the time.
South Georgia is known for its plantations, but these are mostly hunting plantation. Huge working farms, with the land professionally managed for quail hunting mostly. The most famous of all was probably Woodruff's (of Coke fame) Ichauway Plantation -
http://www.lanascooking.com/ichauway-plantation/
Now it's a research center, but as you make that drive you'll see the crops you are interested in but also driving through today's version of plantation country.
I live not far from Andalusia and most of Georgia's plantations were just working farms, although some had big pretty houses. Most did not. Here's one that is now open for special events and has returned to its roots with farming, albeit organic farming.
http://burgeclub.com/
Sherman also camped there on his March to the Sea and the plantation owner's diary is one of the most famous primary sources from the Civil War -
http://docsouth.unc.edu/fpn/burge/menu.html
Be sure to visit the gorgeous town of Madison - full of antebellum homes, along with a really nice tea room (and other restaurants)
http://www.madisontearoom.com/index.php
Not far from Madison = the Blue Willow Inn in Social Circle = excellent southern cooking via buffet
http://www.bluewillowinn.com/
Edited: 6 years ago