* New wheat demand awaited after big tenders last week

* Soybeans, corn dip as South American crops assessed

* Red Sea attacks shrugged off

*

HAMBURG, Jan 22 (Reuters) -

Chicago wheat fell on Monday with little new demand visible after a flurry of big purchases in international tenders last week.

Soybeans and corn drifted lower as dealers awaited developments for crop conditions in major exporters Brazil and Argentina with harvests close.

Chicago Board of Trade most active wheat fell 0.7% to $5.89 a bushel at 1216 GMT. Soybeans fell 0.08% to $12.12-1/4 a bushel, corn fell 0.06% to $4.45-1/4 a bushel.

Wheat demand was quiet on Monday after over 1.5 million metric tons was bought last week in international tenders with buyers including Algeria, Egypt, Tunisia, Jordan and Lebanon with only Jordan tendering for wheat so far this week.

“There is some disappointment about lack of demand which is weakening wheat markets today,” said Matt Ammermann, StoneX commodity risk manager.

“After a series of big international purchase tenders from importers including Algeria and Egypt last week, new demand looks slow so far this week. Markets are also taking a relaxed view of the political tensions in the Middle East including the recent

attacks on shipping

in the Red Sea.”

U.S. corn on Friday fell for the sixth consecutive week and soybeans declined the fifth week in a row after expectations for

plentiful supplies

pushed the markets to multi-year lows on Thursday.

Traders continue to monitor crop conditions in South America after analysts slashed estimates for Brazil's

soybean crop

due to earlier hot, dry weather. Drought fears have eased due to recent rains, though, and bumper harvests are expected elsewhere in South America including

Argentina

.

“In soybeans, attention remains on the Brazilian harvest, with favourable weather still in place for both soybeans and corn,” Ammermann said. “There also seems to be little reason for concern about crop weather in Argentina so far this week.” (Reporting by Michael Hogan in Hamburg, additonal reporting by Naveen Thukral in Singapore; Editing by Sherry Jacob-Phillips, Subhranshu Sahu and Chizu Nomiyama)