Rabobank raised its forecast for the world sugar output surplus in the newly-started season. The bank raised to 4.5m tonnes, from 2.7m tonnes, its estimate for the world production surplus in 2017-18, which began at the start of this month. The revision reflected in part improved expectations for output in Brazil, where the bank quoted an assessment from Unica, the cane industry group, that output in the key Centre South region is now projected to exceed last season’s 35.6m tonnes. Initially, Unica had forecast output of 35.2m tonnes from the Centre South, which is responsible for more than 90% of Brazil’s total sugar output.