CHICAGO: Chicago Board of Trade corn futures ended lower again on Tuesday after dropping from a six-month high a day earlier as promising harvest weather and strong crop conditions ratings weighed on the market.

The most-active CBOT December futures contract ended 1/2 cent lower at $3.69-1/4 per bushel.

Seasonal harvest pressure weighed on the corn market as clear weather has allowed farmers to begin harvest across the US south and parts of the Midwest, traders said.

The US Department of Agriculture on Monday rated 61% of the corn crop in "good-to-excellent" condition, up from 60% a week earlier and beating analyst expectations for a slight decline.

The White House has dropped a plan to provide funds from the US Department of Agriculture to oil refiners that are denied exemptions from the nation's biofuel regulations, according to two sources familiar with the matter.