CHICAGO, Oct 8 (Reuters) - Chicago Board of Trade corn futures firmed on Wednesday in range-bound trading, supported by forecasts for smaller U.S. harvest yields and spillover support from rising soybean futures, analysts said.
Losses were limited by expectations for a record-large U.S. crop, despite yields likely falling short of the latest U.S. Department of Agriculture forecast.
Traders remained cautious due to a lack of updated USDA crop data as the agency suspended the release of key data due to a U.S. government shutdown. The agency had been scheduled to issue its monthly supply and demand report and weekly export sales data on Thursday.
CBOT December corn CZ25 settled 2-1/4 cents higher at $4.22 per bushel. The contract hit overhead technical resistance at its 20- and 100-day averages.
Farmers around the Midwest were actively harvesting corn this week under mostly favorable weather.