* Wheat rises on crop concerns
* Soybeans ease on weaker oil prices, slowing China demand
CHICAGO, July 21 (Reuters) - U.S. winter wheat futures rose
for the sixth day in a row on Wednesday as adverse weather in
key exporting countries raised supply concerns, traders said.
Corn and soybean futures edged higher, with dry soils that
threatened to hamper crop development in the U.S. Midwest in
"Corn belt rain events are still basically non-existent in
the two-week forecast," Matt Zeller, director of market
information at StoneX, said in a note to clients.
MGEX spring wheat futures were down 1.8%, with traders
noting that much of the concern about the size of the crop was
priced in when the market surged to its highest since November
2012 on Monday.
"There are definitely problems for the U.S. and spring wheat
crops but we will get to know how big the problem is when the
harvest starts," said one Singapore-based trader, who sells U.S.
wheat to millers in Asia.
At 11:16 a.m. CDT (1616 GMT), MGEX spring wheat for
September delivery was down 10-1/2 cents at $9.05-1/2 a
bushel. Chicago Board of Trade September soft red winter wheat
was up 9-3/4 cents at $7.10-1/4 and K.C. September hard
red winter wheat was up 8-1/4 cents at $6.68-1/2.
"Western Europe rains return by weekend and remain active
much of next week, reducing wheat quality & stalling harvest,"
Commodity Weather Group said in a note.
Russia's agriculture ministry said on Wednesday that yields
from the ongoing harvest of the country's wheat crop averaged
3.45 tonnes per hectare as of July 20, down from 3.47 tonnes per
hectare a year earlier.
CBOT December corn was up 3-1/2 cents at $5.69-1/4 a
bushel, with the most-active contract peaking at its
highest on a continuous basis since July 6.
CBOT November soybeans were 4-1/2 cents higher at
$13.93 a bushel.
(Additional reporting by Naveen Thukral in Singapore and
Sybille de La Hamaide in Paris; Editing by Chizu Nomiyama and