Asian shares rose and the euro steadied on reports that European leaders, under pressure from tumbling markets, were trying to keep the fallout from the euro zone sovereign debt crisis wreaking more damage on the world economy. "From the macro-economic perspective the market is waiting for further news on the European situation," said Brett Cooper, a senior manager of markets at FCStone Australia. "On the fundamental side, we have had a pretty strong pullback in the last 10 days and people will sit back to see if that generates some demand." European policymakers, stung by criticism for failing to limit the euro zone debt crisis, want to ensure fallout from Greece's near-bankruptcy inflicts no more damage on the world economy. Chicago Board of Trade December corn rose 0.5 percent to $6.41-3/4 a bushel by 0255 GMT, after sliding nearly 20 percent from its June peak of near $8 a bushel on a continuation chat. December wheat rose 0.2 percent to $6.42-1/4 a bushel, while November soybeans gained 0.1 percent to $12.59-3/4 a bushel. The front-month wheat contract has lost 28 percent since hitting this year's top of $8.93-1/2 a bushel in February and soybeans CBOT corn and wheat futures fell for the fourth consecutive week last week, and soybeans for three weeks in a row. Last week's decline in soybeans was the steepest since September 2009 as funds bailed out after building up their net long positions to the biggest in about seven months in August. The wheat market is being supported by concerns that a drought in key US winter wheat growing areas will hurt next year's crop, which is being planted now. Drought has plagued the US Plains hard red winter wheat region and 80 percent of the Ukraine's winter grain-sowing area. On Friday, private forecaster Informa Economics pegged 2011 US all-wheat production at 2.044 billion bushels, down from the US Department of Agriculture's estimate of 2.077 billion. It also reportedly estimated US hard red spring wheat at 444 million bushels down from USDA's estimate of 475 million bushels. Informa reportedly cut its estimate for 2011 US corn production to 12.62 billion bushels from 12.711 billion, while raising its US soy harvest estimate to 3.092 billion bushels from 3.061 billion. Widespread rumors last week that China would purchase up to 5 million tonnes of corn from the United States and Argentina have gone unconfirmed, draining support for CBOT corn, which rebounded 15 cents on the first day of the rumors.