"The U.S. Agricultural Census of 1850 reports that in Cobb County the county's largest crops were cotton, wheat, corn, oats, rice, and sweet potatoes." (from Mable Property Rural Preservation Plan)The Mable House planning document linked above also tells that, after the Civil War, chickens became a larger part of agricultural activity in the county, and, after WWI, cotton ranked higher in productivity. By 1935, Cobb County's farms were producing "cotton, corn, hay, truck garden crops, and sweet potatoes." After WWII, agriculture in Cobb County was still an important economic activity, but the amount of land in agricultural production has been in decline, generally, since then.
Today, as area residents consider beginning new agricultural businesses, UGA's consumer horticulturalist Bob Westerfield has some words of advice, offered through an interview published on Georgia FACES:
“Think small to begin with, unless you have a lot of help and equipment,” he said. “I recommend a quarter- or half-an-acre plot.”