Cotton futures rose rapidly over recent weeks as speculators began buying for potentially big profits based on expectations that prices would go up, according to a Texas A&M AgriLife Extension Service expert.The rally has been good for Texas cotton growers who have negotiated prices during the rally or who still have cotton to sell, said John Robinson, Ph.D., AgriLife Extension cotton marketing economist, Bryan-College Station. But he suspects the spike in buying and climbing prices is nearing the end.Robinson said the cotton price rally started three weeks ago when it became clear prices would be up and the number of ...