* Russia, Brazil consultancies cut wheat, soybean estimates

* U.S. considers tariffs on Chinese used cooking oil

* Traders await USDA crop progress reports

(Updates prices, byline, analyst quotes, re-writes throughout, adds bullets, changes dateline from Hamburg)

CHICAGO, May 13 (Reuters) -

Chicago Board of Trade wheat futures rose on Monday, hitting nine-month highs on Monday on worries about crop losses in Russia after multiple nights of frosty weather in key regions.

Soybean and corn futures followed on concerns over U.S. corn planting progress and flooding in southern Brazil.

Chicago Board of Trade most-active wheat rose 25 cents to $6.88-1/2 a bushel by 12:34 P.M. CDT (1734 GMT), hitting highs not seen since Aug. 2023.

Soybeans climbed 3-1/4 cents to 12.22-1/4 a bushel, while corn rose 3-3/4 cents to 4.73-1/2 a bushel.

Frosts again hit southern Russia's grain belts over the weekend, and Russia's IKAR agricultural consultancy cut its forecast for Russia's wheat crop to 86 million metric tons from 91 million tons previously. It cut wheat exports to 47 million metric tons from 50.5 million tons.

Three of Russia's key grain-growing areas declared

states of emergency

last week following the frosts.

The potential for losses gave support to the U.S. wheat markets, said Karl Setzer of Consus Ag Consulting. Meanwhile, soybeans took additional support from soyoil, Setzer said.

"Some buying in the crude complex is spilling over into the soy complex," he said.

Following severe flooding Brazil's Rio Grande do Sul state, the country's Pátria Agronegócios agriculture consultancy estimated the 2023/2024 soybean crop at 142.82 million tons versus 143.18 million tons in previous forecast. The consultancy estimated soybean losses related to recent floods at 2.4 million tons.

Randy Place, analyst with the Hightower Report, said chatter that the Biden administration may

add tariffs

to Chinese used cooking oil led to some short covering in soybeans. Used cooking oil imports can be a substitute for U.S. soyoil to make renewable fuel.

Traders also tracked U.S. corn and soy planting progress, after farmers faced some rain delays.

The U.S. Department of Agriculture, in a weekly report due later on Monday, is expected to report 49% of U.S.

corn planting

is complete, analysts said. (Reporting by Renee Hickman in Chicago; Additional reporting by Michael Hogan in Hamburg, Peter Hobson in Canberra; Editing by David Gregorio)