* Turkey's curbs on wheat imports seen hitting Black Sea shipments

* Chicago corn futures firm after losses; soybeans fall


HAMBURG, June 10 (Reuters) - Chicago wheat fell again Monday, remaining close to Friday's five-week lows, as Turkey's ban on imports triggered worries about reduced demand and intensified competition with Black Sea supplies in export markets.

Corn rose after Friday's losses, soybeans fell.

Chicago Board of Trade most-active wheat fell 0.4% to $6.24-1/2 a bushel at 0925 GMT. Wheat on Friday hit its lowest since May 6 at $6.18 a bushel after Turkey said it will halt wheat imports from June 21 to Oct. 15 partly to protect farmers. Turkey is the world's fifth largest wheat importer, buying mostly from Russia.

Corn rose 0.2% to $4.49-3/4 a bushel, soybeans rose 0.02% to $11.79-1/2 a bushel.

"Wheat is still being weakened today by the news of Turkey's import ban," said Matt Ammermann, StoneX commodity risk manager. "This would mean that Black Sea wheat, especially Russian, which would have gone to Turkey may now be sold elsewhere in competition to U.S. and other exporters."

"The market seems to be tired of reports about weather damage to Russian crops and is seeking other factors to trade."

Wheat was also weakened by expectations of a good U.S. harvest.

"U.S. wheat weather is positive and there are expectations of a positive U.S. crop conditions report from the USDA later on Monday," Ammermann said.

Corn and soybeans were drifting as the week starts, ahead of news later this week from U.S. Department of Agriculture (USDA) crop reports on Wednesday and U.S. Federal Reserve policy meeting.

Analysts in a Reuters poll estimated the USDA's June 12 crop production report will forecast larger a U.S. winter wheat harvest.

"Corn is seeing some buying interest after Friday's fall. Overall U.S. Midwest weather is looking positive and the strong U.S. dollar is weakening soybeans," Ammermann said. (Reporting by Michael Hogan in Hamburg, additional reporting by Naveen Thukral in Singapore; Editing by Subhranshu Sahu, Mrigank Dhaniwala and David Evans)