SINGAPORE: Chicago soybeans fell on Friday, with the market set for its third weekly drop on pressure from expectations of all-time high U.S. output and slowing demand in top importer China.

Wheat and corn lost ground.

The most-active soybean contract on the Chicago Board of Trade (CBOT) slid 0.2% to $9.66-1/4 a bushel as of 0149 GMT. Wheat gave up 0.1% to $5.28 a bushel and corn fell 0.5% to $3.95 a bushel.

For the week, soybeans are down 3.6%, the biggest decline in a month, wheat has given up 2.7% and corn is little changed.

The U.S. Department of Agriculture, earlier this week, raised its estimates for corn and soybean production from a month earlier, adding to expectations of hefty global supplies of both crops.

Traders are consolidating their positions ahead of next week's ProFarmer crop tour. The annual tour of U.S. Midwest corn and soybean fields is widely expected to find record yields.

"Record yield expectations have been laid out for U.S. corn and soybeans, and it will be up to next week's Pro Farmer Crop Tour to either reinforce or reject this narrative," Karen Braun, a market analyst for Reuters, wrote in a column.

The crop tour, in its 32nd year, will run from Monday through Thursday. About 100 scouts will hit well over 1,000 corn and soybean fields across Illinois, Iowa, Nebraska, Minnesota, Indiana, Ohio and South Dakota to determine yield potential.

The USDA reported net weekly U.S. soybean export sales of 1,344,200 metric tons for 2024-25, topping analysts' expectations for 400,000 to 1,000,000 metric tons.

The wheat market has been weighed down by ample Black Sea supplies although the market found some support from a Russian attack on Ukrainian port infrastructure.

Russia attacked the port infrastructure in Ukraine's southern city of Odesa on Wednesday evening, injuring at least two people.

The International Grains Council trimmed its forecast for 2024/25 global wheat production to 799 million metric tons, down from a previous projection of 801 million tons, driven largely by a downgrade in French output.

Dry weather will continue to weigh on Argentina's wheat crop over the next few days, the Buenos Aires grains exchange said on Thursday, warning the crop in the country's western farm regions had already been bit by recent cold, dry weather.

Commodity funds were net buyers of CBOT soymeal contracts and net sellers of corn, soy oil and wheat contracts on Thursday, traders said. Funds were net even on soybeans. (Reporting by Naveen Thukral; Editing by Rashmi Aich)