CBOT Trends-Wheat down 6-7 cents, corn down 3-4, soybeans down 12-14

CHICAGO, Aug 12 (Reuters) - The following are U.S. expectations for the resumption of grain and soy complex trading on Tuesday:

WHEAT - Down 6 to 7 cents per bushel

• Wheat futures ticked down as traders adjusted positions before the monthly U.S. Department of Agriculture supply and demand report, due on Tuesday at 11 a.m. CST, which is expected to show plentiful U.S. and global supplies.

• The USDA said in a weekly crop report on Monday that 49% of the nation's spring wheat crop was in good or excellent condition, up from 48% a week ago. It said farmers had harvested 16% of the crop so far, up from 5% a week ago.

• For winter wheat, the agency said farmers had wrapped up 90% of the harvest, up from 86% a week ago. Analysts expected harvesting to be 92% complete.

• CBOT September soft red winter wheat WU25 was last down 6-3/4 cents at $5.08-1/4 per bushel. K.C. September hard red winter wheat KWU25 was last down 6-1/4 cents at $5.15-3/4 per bushel. Minneapolis September wheat MWEU25 was last down 1/2 cent at $5.77-1/4 a bushel.

CORN - Down 3 to 4 cents per bushel

• Corn futures eased as traders adjusted positions before the monthly USDA supply and demand report.

• Ahead of the report, analysts polled by Reuters thought the agency would raise its corn production estimates to 15.990 billion bushels from July's 15.705 billion bushels.

• The USDA said Monday that 72% of the nation's corn crop was in good or excellent shape as of Sunday, down from 73% last week. It was nonetheless the highest rating for this time of year since 2016.

• CBOT December corn CU25 was last down 3-1/4 cents to $4.04-1/2 per bushel.

SOYBEANS - Down 12 to 14 cents per bushel

• Soybean futures gave up the gains received on Monday after U.S. President Donald Trump urged China, the world's biggest soybean importer, to quadruple its purchases of U.S. beans. GRA/

• Washington and China later announced they were extending a tariff truce for a further 90 days but there were no immediate agreements on agricultural trade.

• The USDA on Monday rated the U.S. soybean crop 68% good to excellent, down from 69% last week and the same as a year ago.

• Ahead of the USDA supply and demand report, analysts polled by Reuters thought the agency would raise its soy production estimates to 4.368 billion bushels from July's 4.335 billion bushels.

• CBOT November soybeans SX25 were last down 13 cents at $9.98-1/4 per bushel.