A sharp fall in global sugar prices poses a threat to U.S. ethanol exports and related demand for corn, said USDA. That is certainly one area will certainly keep an eye on because it is an area of risk and are doing a fair amount of export business. US uses corn to make ethanol while its main competitor Brazil uses sugar cane to produce the renewable fuel. Global raw sugar prices slid to a 15-month low of 13.63 cents per lb late last week and have fallen around 40% during the last eight months. During the same period corn prices have risen about 5%. In Brazil, low sugar prices can encourage more use of cane to produce ethanol. Brazil Copersucar SA cut its outlook for sugar production in the 2017/18 centre-south cane crop. It also raised its projection for ethanol production.