USDA data blackout fuels uncertainty ahead of upcoming crop report

By Karl Plume and Julie Ingwersen CHICAGO (Reuters) -A crop data blackout during the longest-ever U.S. government shutdown has led to the widest range of analyst estimates in a decade for corn and soybean yields, as an information vacuum at harvest time and during critical trade negotiations distorted the market for the country's two most ​valuable crops. On Friday, the U.S. Department of Agriculture is set to release a hotly anticipated crop report including the government's first estimates of the two f ...