Chicago Board of Trade corn futures ended higher on Tuesday as traders squared positions ahead of a series of major government crop reports due for release on Friday, traders said. CBOT March corn was up 1-1/2 cents at $3.80-3/4 per bushel, settling above its 20-, 50- and 100-day moving averages for a second straight day. The market is waiting for the US Department of Agriculture to clear a backlog of crop reports delayed by a partial government shutdown. The agency's closely watched annual supply and demand estimates are scheduled for release on Friday.