CHICAGO, March 12 (Reuters) - Basis bids for corn and soybeans were flat to mixed in the U.S. Midwest on Thursday as a wave of farmer selling that began early in the week petered out, though futures continued to rise.

• Farmers had earlier taken advantage of a massive rally in agricultural commodities to forward contract new-crop corn, soy and wheat and sell off grains in storage.

• The U.S. Department of Agriculture reported net weekly U.S. soybean export sales for 2025/26 for the week ended on March 5 at 466,200 metric tons, in line with analyst estimates.

• The U.S. Department of Agriculture reported net weekly U.S. corn export sales for 2025/26 for the week ended on March 5 at 1,503,800 metric tons, on the low end of a range of analyst estimates.

• Chicago soybean futures rose for a third consecutive session on Thursday, as crude oil climbed further following Iranian attacks that deepened fears of a protracted Middle East conflict.

• Wheat and corn also rose, with the strength in crude again offsetting a backdrop of ample global grain supplies.

• Chicago Board of Trade most-active soybeans were last up 14-3/4 cents to $12.29 per bushel. Most-active corn was last up 4-1/2 cents to $4.65 per bushel.

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

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 Heather Schlitz; Editing by Krishna Chandra Eluri)

((Heather.Schlitz@thomsonreuters.com;))