A shipment of corn from the U-S has been turned down by Japan because tracesof a genetically modified corn variety were found. The corn has been tracedback to a Minnesota cooperative but it’s unclear if any of the corn camefrom Iowa. The shipment refused by the Japanese contained traces of Starlinkcorn, a bio-tech variety that was approved for animal but not humanconsumption when it was widely grown a couple of years ago. The shipment hasbeen traced back to cargo that originated with twin cities-based CHSCooperatives. Officials with the co-op say they don’t know how theshipment was contaminated. Two years ago the corn market was racked by theStarlink controversy. This time. many market observors says they don’texpect the latest findings to have a lasting effect in the market.