CHICAGO, Jan. 28 (UPI) -- Grain futures prices were down at the close Friday on the Chicago Board of Trade as uncertainty in Egypt pressured markets.

Corn was off 6 to off 6 3/4, soybeans were off 1 1/2 to off 4 3/4, wheat was off 18 1/2 to off 20 1/2 and oats were off 3/4 to off 4 1/2.

Continued pressure from wheat and a high dollar weighed on the corn market despite support from soybeans, energy and gold. Losses were kept in check by dry weather in Argentina as well as a strike in Argentine ports that kept exports from going out.

The situation in Argentina and continued demand from China helped speculative buying in soybeans, tempering losses.

Wheat managed a gain of 1 1/4 cents on the week despite Friday's precipitous drop as unrest in Egypt, the world's largest importer, roiled the country.

The prices:

Corn: Mar 6.44 off 6 3/4, May 6.54 1/2 off 6 1/2, Jly 6.59 3/4 off 6 1/4, Sep 6.11 3/4 off 6.

Soybeans: Mar 13.98 off 1 1/2, May 14.08 1/4 off 1 3/4, Jly 14.13 1/2 off 2 1/4, Aug 13.86 1/2 off 4 3/4.

Wheat: Mar 8.25 3/4 off 20 1/2, May 8.55 1/2 off 19 1/2, Jly 8.74 3/4 off 19 3/4 and Sep 8.93 3/4 off 18 1/2.

Oats: Mar 3.85 1/2 off 4 1/2, May 3.93 3/4 off 4 1/4, Jly 3.97 1/4 off 4 1/4, Sep 3.73 off 3/4.