* USDA forecast curbed corn prices * Soybeans firm as big Brazil crop set against tight U.S. stocks * Market impetus restrained by Lunar New Year holiday (Updates with European trading, changes byline/dateline) By Gus Trompiz and Colin Packham PARIS/CANBERRA, Feb 12 (Reuters) - U.S. corn futures edged higher on Friday, consolidating after a volatile week in which prices retreated from a 7-1/2 year high as a higher than expected U.S. supply forecast tempered support from recent Chinese demand. Soybeans were also firm, with expectations for bumper South American production set against tight U.S. stocks, while wheat was little changed. A week-long holiday in China for the Lunar New Year was also removing some impetus from grain markets. The most active corn futures on the Chicago Board of Trade (CBOT) were up 0.5% at $5.43-3/4 a bushel by 1317 GMT. After reaching their highest since June 2013 early this week, corn futures tumbled when the U.S. Department of Agriculture made a smaller than anticipated cut to its monthly U.S. corn stocks forecast before prices regained some ground from Thursday. The USDA"s stocks projection surprised traders who had expected recent massive export sales to China to absorb more of the U.S. surplus. "Consolidation perhaps suggests the looser longs have been shaken out for now," said Tobin Gorey, director of agricultural strategy at Commonwealth Bank of Australia. "U.S. export sales were solid over the past week but not startlingly so," he said, referring to weekly export data published on Thursday. Despite early rain delays to Brazil"s soybean harvest, prospects for large soybean and corn crops in South America also curbed grain markets this week. Soybean production in Brazil is expected to reach a record 133.817 million tonnes in 2020/21, while corn output is forecast to be bigger than previously projected, agricultural statistics agency Conab said on Thursday. Harvest prospects in Argentina have also been boosted by rainfall after drought. However, soybean futures remained underpinned by the USDA"s monthly forecast of U.S. 2020/21 soybean stocks, which was below market consensus. CBOT soybean futures were up 0.4% at $13.72-1/4 a bushel while wheat edged up by a quarter of a cent to $6.33-3/4 a bushel. The wheat market was monitoring the risk of frost damage to U.S. wheat crops this week in areas lacking protective snow cover. Prices at 1317 GMT Last Change Pct End Ytd Pct Move 2020 Move CBOT wheat 633.75 0.25 0.04 640.50 -1.05 CBOT corn 543.75 2.75 0.51 484.00 12.35 CBOT soy 1372.75 5.25 0.38 1311.00 4.71 Paris wheat Mar 222.25 -0.25 -0.11 213.25 4.22 Paris maize Mar 219.50 1.25 0.57 198.50 10.58 Paris rape May 448.50 1.75 0.39 412.00 8.86 WTI crude oil 57.90 -0.34 -0.58 48.52 19.33 Euro/dlr 1.21 0.00 -0.21 1.2100 0.02 Most active contracts - Wheat, corn and soy US cents/bushel, Paris futures in euros per tonne (Reporting by Gus Trompiz in Paris and Colin Packham in Canberra Editing by Krishna Chandra Eluri and David Goodman )