Growers would no longer be losing yield to overpowering weeds. ???The ExpressSun market share has grown every year since the introduction in 2007-2008,??? notes Bob Weigelt of DuPont. ???A number of growers tell me they would not be growing sunflower if they did not have ExpressSun technology.??? Whether the grower uses Clearfield or ExpressSun hybrids, with all new technology, there is a learning