Large southern farms where only one crop was grown?
Planatations i think. If not, sorry I didn't help
No, alcohol as such cannot be grown on farms, although for wine, grapes are grown in vineyards as they lend flavour to it. Likewise for beer, agriculture plays a role in growing the grain that is required for the beverage. Methanol (wood alcohol) also comes from a crop that is grown (trees). But the alcohol is not itself grown; it is produced from the crops that are grown.
Rice was not a cash crop for the southern colonies but tobacco, indigo, and corn wheat were. In addition, perhaps the biggest cash crop grown in the southern colonies was cotton. The South grew to rely so heavily on cotton and the money it generated that it began to direct their society, leading to the Southern dependence on slavery.