Chicago Board of Trade corn futures ended higher on Tuesday, rebounding from a two-month low set a day earlier, supported by signs of improving export demand and a slow US harvest pace, traders said.

CBOT December corn settled up 2-1/4 cents at $3.70 per bushel.

The US Department of Agriculture late on Monday said the US corn harvest was 76% complete, below an average of analysts' forecasts of 77% and well below the five-year average of 92%.

The USDA said private exporters sold 191,000 tonnes of US corn to unknown destinations, following sales of an additional 132,000 tonnes announced a day earlier.

South Korean buyers booked about 125,000 tonnes of corn in the last day, European traders said, although some was thought to be sourced from Ukraine.