Cotton Pollination Sources
Many cotton growers think they don't need bees for cotton pollination. A crop can be grown without bees. Yet there is plenty of indication that good bee activity will benefit cotton, with increased quantity and quality of crop.
McGregor's pollination "Bible" is one classic resource, that sums up the research up to 1976, that is also now online, thanks to Bee Culture magazine and the Carl Hayden USDA bee lab at Tucson.