CHICAGO, May 24 (UPI) -- Prices were lower at midmorning Monday on the Chicago Board of Trade. Soybeans hit new contract lows as the market was pressured by weather, which was ideal fo rseeding activity. Corn was lower on lack of supportive information with the outlook indicating plantings will be completed this week. The market also was plagued by technical weakness. Wheat was lower on spillover from corn and soybeans, coupled with slow exports and good weather. The midmorning prices: Corn: Jul 2.12 1/2 off 6, Sep 2.18 1/4 off 5 3/4, Dec 2.27 off 5 1/4, Mar 2. 36 3/4 off 4 1/2. Soybeans: Jul 4.52 1/2 off 9 1/4, Aug 4.56 off 9 1/4, Sep 4.58 1/4 off 9 1/4, Nov 4.65 1/4 off 9 1/4. Wheat: Jul 2.47 1/2 off 4 3/4, Sep 2.58 off 4 3/4, Dec 2.73 off 4 1/2, Mar 2. 83 1/2 off 5 1/4. Oats: Jul 1.17 3/4 off 2 1/2, sep 1.16 off 2 3/4, Dec 1.18 off 2 1/2, Mar 1. 24 off 1 1/2. -=-=- 