GRAINS-Corn stuck near 1-year low on weak U.S. exports, ample supply

* U.S. corn export sales below market expectations

* Improving weather in Brazil keeps focus on ample supply

* Corn, wheat, soy edge up on Friday with dollar support

* Markets seeking price bottom amid big global stocks

(Updates with European trading, changes byline/dateline) MANILA/PARIS, Nov 17 (Reuters) - U.S. corn futures held near a one-year low on Friday, as the market tried to find a footing after being dented by lower than expected U.S. export sales and the prospect of ample supply. Chicago soybeans and wheat edged higher as a weaker dollar helped prices to steady after falling this week on favourable global production and stiff export competition. The most-traded corn contract for December delivery on the Chicago Board of Trade was up 0.5 percent at $3.38 a bushel by 1110 GMT. It remained close to Thursday's trough of $3.36-1/4, its lowest since Nov. 15 last year, and was down 1.6 percent over the week, which would be its biggest weekly fall in a month. "Chicago (corn) is now testing lowest levels of the season in a context of increased competition on the international market with Brazilian origins," consultancy Agritel said in a note. "In this respect, U.S. exports data were disappointing." Net U.S. old-crop corn export sales last week fell to 949,500 tonnes, below market expectations for at least 1.2 million tonnes, data from the U.S. Department of Agriculture showed on Thursday. Analytics firm Informa Economics at the same time raised its forecast of U.S. 2018 corn plantings to 91.415 million acres, from 90.460 million acres previously. While corn plantings elsewhere, particularly in Brazil, will fall year-on-year, "crops are otherwise seeing limited disruption so far, prompting speculative positions to again approach multi-year lows," according to BMI Research, a unit of Fitch Group. The corn market has also been weighed down by the U.S. government's forecast for a record yield this year, accentuating seasonal supply pressure from the ongoing U.S. harvest. CBOT soybeans were up 0.3 percent at $9.75 a bushel, while wheat gained 0.5 percent to $4.23-1/2 a bushel. U.S. net old-crop soybean sales of 1.1 million tonnes last week were at the low end of a range of trade estimates, the USDA data showed. U.S. wheat sales of 489,300 tonnes were down 37 percent from the previous week. A latest Egyptian tender on Thursday underlined the competitive edge of Black Sea wheat, as Egypt booked 240,000 tonnes of wheat from Russia, despite renewed uncertainty over import terms. Strong exports from Russia following a record crop have curbed U.S. and western European shipments. European Union common wheat exports are running 23 percent below last season's pace, official data showed on Thursday.

Prices at 1110 GMT

Last Change Pct End Ytd Pct Move 2016 Move CBOT wheat 423.50 2.00 0.47 408.00 3.80 CBOT corn 338.00 1.50 0.45 352.00 -3.98 CBOT soy 975.00 3.00 0.31 1004.00 -2.89 Paris wheat Dec 158.75 0.00 0.00 175.00 -9.29 Paris maize Nov 155.75 -0.25 -0.16 171.00 -8.92 Paris rape Nov 378.75 -0.25 -0.07 393.00 -3.63 WTI crude oil 55.95 0.81 1.47 53.72 4.15 Euro/dlr 1.18 0.00 0.28

Most active contracts - Wheat, corn and soy US cents/bushel, Paris futures in euros per tonne

(Reporting by Manolo Serapio Jr.; Editing by Biju Dwarakanath and Elaine Hardcastle)