CHICAGO, Aug 25 (Reuters) - Spot basis bids for soybeans delivered to U.S. Midwest processors were steady-to-lower on Monday due to easing demand, while corn bids fell at some ethanol plants, grain merchants said.

• Soy processors have lowered their bids as some facilities are set to suspend operations for seasonal maintenance and repairs.

• A processor in Lincoln, Nebraska, dropped its spot bid by 15 cents a bushel.

• Farmers were projected to start harvesting a record-breaking corn crop in the coming weeks, bringing fresh supplies to grain elevators and processing facilities.

• The U.S. Department of Agriculture will likely trim its U.S. corn and soybean crop ratings in a weekly report due later on Monday, analysts said in a Reuters poll, though large harvests were still expected.

• Chicago Board of Trade soy futures Sv1 fell, while corn futures Cv1 were nearly unchanged in afternoon trading.

Basis values are quoted against CBOT futures in cents/bu:

NOTE: 0 = Option price, UNC = Unchanged, UNQ = Unquoted

NC = Not comparable, DP = Delayed price, N/A = Not available,

F = January, H = March, K = May, N = July, Q = August, U = September, X = November, Z = December

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LINKS: 0#USCSHGRN-PM

For U.S. forward basis spreadsheets, please click:

CORN/BASIS, SOYA/BASIS, WHEAT/BASIS, MILO/BASIS

- CBOT corn report COR/

- CBOT soybean report SOY/C

- CBOT wheat report WHE/C

- U.S. grain barge freight values BG/US

- U.S. Midwest cash grain PM GRA/PM

- U.S. CIF/FOB Gulf Grain GRA/F

(Reporting by Tom Polansek in Chicago; editing by Barbara Lewis)

((Thomas.Polansek@thomsonreuters.com))