WASHINGTON — The U.S. Department of Agriculture has reported a private export deal selling 900,000 tonnes of corn for delivery to China.

A total of 180,000 tonnes was for delivery during the 2011-12 marketing year ending Aug. 31, 2012. The remaining 720,000 tonnes was for the 2012-13 marketing year.

All of the 2011-12 sales and 480,000 tonnes of the 2012-13 sales were previously reported as unknown destinations, the U.S.D.A. said.