PARIS/CANBERRA, Oct 4 (Reuters) - Chicago soybean futures edged up on Wednesday as an easing in the dollar from a 11-month peak helped the oilseed market to steady after a slide linked to supply pressure.

Corn inched down, consolidating near a three-week high as traders awaited a clearer picture of the U.S. harvest.

Wheat fell after rebounding in the previous two sessions from Friday's three-year low, with participants setting bargain-buying including from Chinese importers against ample global supplies.

Most-active Chicago Board of Trade (CBOT) soybean futures were up 0.6% at $12.80-1/4 a bushel by 1103 GMT.

On Tuesday, the contract equalled an 18-month low set in late June.

The dollar index fell from a near 11-month high, providing some relief to commodities priced in the U.S. currency.

Tuesday's announcement of private sales of 265,000 metric tons of U.S. soybeans to China suggested buying interest after this week's price lows.

But soybeans remained curbed by an improving outlook for U.S. supplies and rapid planting of crops in Brazil.

"We are seeing more soybean supply coming in and putting pressure on the market," said Andrew Whitelaw at Australian agricultural consultancy Episode 3.

After the U.S. Department of Agriculture on Friday estimated soybean stocks above market expectations, USDA data this week showed a slight improvement in soybean crop ratings as the harvest advances.

Commodity broker StoneX, meanwhile, raised its forecast for this year's U.S. soybean and corn crops.

In Brazil, a report on Monday showed farmers in the top soybean exporter were planting new crops at the fastest pace on record.

CBOT corn was down 0.2% at $4.86-3/4 a bushel and CBOT wheat fell 1.6% to $5.59-1/4 a bushel.

The USDA on Tuesday said China bought 220,000 metric tons of U.S. soft red winter wheat, the first Chinese purchase of that class of U.S. wheat since July 2021.

However, steps by war-torn Ukraine to revive its grain exports, hampered by Russia's withdrawal from a Black Sea grain deal, were underscoring global availability of wheat.

Ukraine's navy said on Wednesday that 12 more cargo vessels were ready to enter a fledgling Black Sea shipping corridor en route to Ukrainian ports.

(Reporting by Gus Trompiz in Paris and Peter Hobson in Canberra; Editing by Kirsten Donovan)