CHICAGO, Dec 9 (Reuters) - Spot basis bids for U.S. corn declined at some Midwestern processing plants after farmers increased crop sales to take advantage of rising prices, brokers said.

* Most-active corn futures Cv1 on Monday hit their highest price since June 26 at the Chicago Board of Trade.

* Farmer selling began to accelerate last week.

* Some farmers are more willing to make sales because they were burned by low prices after putting their 2023 harvests in storage, a broker said.

* Processors lowered their basis by 6 cents a bushel in Cedar Rapids, Iowa, and by 5 cents in Blair, Nebraska.

* For soybeans, the basis rose by 5 cents a bushel at a processing facility in Lafayette, Indiana, and was flat elsewhere.

Basis values are quoted against CBOT futures in cts/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 = JulyQ = 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 Paul Simao)

((Thomas.Polansek@thomsonreuters.com))