*Texas farmers were hard at work at the Commodity Classic in Houston.  *The largest wildfire in Texas history has burned a massive swath through the Texas Panhandle.  *A final rule from USDA could put the U.S. cattle herd at risk for foot and mouth disease.  *Cotton prices have once again hit a dollar a pound on old crop contracts.  *Using antibiotics to help improve conception rates in horses was thought to be effective.  *High interest rates are adding more expense to rising input costs for agriculture.