IIRC, cotton strips the soil of nutrients and needs lots of ferticlizer for other crops after it. So while you are growing food, you are killing the growth value for crops.
That's why the peanut was invented.
Cotton also is one of the most highly pesticide treated crops with boll weevils, bollworms, cutworms, bugs, budworms, thrips, aphids, whiteflies, armyworms, mites, and loopers attacking the crop. Many times early treatments for boll weevil kill off the beneficial insects that would protect the crop against the other pests. Additional treatments are then be needed to kill these pests.
geez, now ya gotta get technical on us and ruin a good grant opportunity.
I know that you've heard of "crop rotation."