CBOT Trends-Wheat down 4-5 cents, corn steady-down 1, soybeans mixed

CHICAGO, Sept 26 (Reuters) - The following are U.S. expectations for the resumption of grain and soy complex trading at the Chicago Board of Trade at 8:30 a.m. CDT (1330 GMT) on Friday.

WHEAT - Down 4 to 5 cents per bushel

• CBOT wheat futures fell with large global supplies expected and overall bearish sentiment in the grains markets.

• Australia is on track to reap its third-biggest wheat harvest and its largest-ever barley crop this year, according to a poll of analysts, many of whom have raised their estimates in recent weeks thanks to favorable crop conditions.

• The U.S. Department of Agriculture reported weekly net export sales for the week ended September 18 totaling 539,800 metric tons.

• CBOT December soft red winter wheat WZ25 was last down 4-1/4 cents at $5.22-3/4 per bushel. K.C. December hard red winter wheat KWZ25 last traded down 2-3/4 cents at $5.09-1/2 a bushel and Minneapolis December wheat MWEZ25 traded 3 cents lower at $5.70 a bushel.

CORN - Steady to down 1 cent per bushel

• CBOT corn Cv1 futures ticked down as the advancing U.S. corn and soy harvests have put some supply pressure on prices, though doubts over the size of corn yields have lent support to that market.

• The USDA reported weekly U.S. corn export sales of 1.9 million tons topped analysts' estimates for 1 million to 1.8 million.

• CBOT December corn CZ25 was last down 1 cent at $4.24-3/4 per bushel.

SOYBEANS - Up 1 to down 1 cent per bushel

• CBOT soybean Sv1 futures were pressured by large Chinese purchases of Argentine soybeans at the expense of U.S. supplies and seasonal pressure from the North American harvest.

• Around 40 Argentine soybean cargoes were registered for export in November and December during this week's export tax suspension, mostly headed to China, two traders told Reuters, in purchases that directly eat into the prime U.S. marketing season.

• CBOT November soybeans SX25 were last down 1/4 cent at $10.12 per bushel.