Brazil's 2015-16 sugar cane harvest will be bigger than expected due to favorable weather, the chief operating officer of Raizen, the country's largest sugar and ethanol producer, said on Tuesday, and the company's own production will be at the high end of its predicted range. COO Pedro Mizutani said Brazil's center-south cane crop should approach 600 million tonnes, but added that mills may struggle to crush the entire crop if July turns out rainier than expected.