Brazilian soybean producers have begun selling the 2012/13 crop earlier than ever before with 27 percent of next season's output already sold, at least four months before the start of planting, local grains analysts Celeres said on Monday. 
Sales of the new crop by May 25 were up from the 26 percent sold forward in the week earlier. No significant volume of sales was registered in prior years so early, Celeres said.