(Updates with U.S. trading, updates headline, byline)

By Renee Hickman

CHICAGO, March 31 (Reuters) - Chicago soybean futures

fell on Monday as old crop stock estimates in a U.S. Department

of Agriculture data release were larger than expected, according

to analysts.

Corn futures rose as U.S. stocks were seen close to trade

estimates in the release, and wheat rose on lower than expected

acreage, analysts said.

Chicago Board of Trade's most-active soybeans fell 5

cents to $10.18 a bushel at 11:16 CST (1618 GMT). Most-active

corn rose 5 cents to $4.58-1/4. Wheat rose 6-1/2 cents to

$5.34-3/4 a bushel.

The U.S. Department of Agriculture released its estimates of

prospective plantings and quarterly grain stocks on Monday,

with analysts polled by Reuters expecting an increase in U.S.

corn and wheat plantings but a reduction in soybean sowings.

Soybean acreage numbers were close to expectations, but

stocks were higher than expected, pressuring futures, said Don

Roose, president of U.S. Commodities.

"We still have big supplies of soybeans domestically, with

competition from South America going on," he said.

Corn planting numbers came in higher than trade estimates

but U.S. corn stocks were estimated at the same level as the

expectations, adding some support, said Roose.

Meanwhile, wheat firmed on lower acreage than the trade

outlook, said Roose, but it continued to hover near contract

lows reached Friday.

"It's a market that had dialed in negative news," said

Roose.

Wheat received some pressure however, from rains forecast

this week in parts of the U.S. and Russian wheat belts as well

as expectations of smoother exports from Russia and Ukraine due

to the U.S.-backed ceasefire deal, analysts said.

Corn, soybeans and wheat also continued to feel pressure

from the looming start date for a swath of tariffs on goods

imported into the U.S., which the administration of President

Donald Trump has said are set to take effect on April 2.