A key lobby group on Monday became the latest body to downgrade Russia‘s 2010 crop prospects as the worst drought in 130 years threatened harvests in the major wheat exporter, sending key wheat prices to 22-month highs, Reuters reported on Monday.

Monday‘s jump in the United States’ wheat prices Wc1 followed a 42 per cent leap in wheat futures on the Chicago Board of Trade, the biggest monthly advance since 1959, as damage from drought and flooding threatened crops from the Black Sea grain breadbasket.

Benchmark November milling wheat BL2X0 on Euronext surged to a fresh contract high in opening trade.

While markets have focused intently on Russia, concerns have also started to creep on in the fate of crops in world number 4 exporter Australia, with wheat in a key state under threat from dry conditions.

The Russian Grain Union cut its 2010 grain crop forecast to between 72 million and 78 million tonnes from 81.5 million-85 million tonnes previously as a severe drought continued to advance in key producing regions.

President of the lobby group, Arkady Zlochevsky, also told reporters that the union expected Russia to export between 11 million and 19.5 million tonnes of grain, compared with a previous estimate of some 20 million tonnes in the current crop year.

“What we really want to get a grasp on is how much production has been lost, particularly in that Russian and FSU (former Soviet Union) region to figure out what will be the impact on trade and the current rally that we have seen,” Luke Mathews, a commodity strategist at Commonwealth Bank of Australia, said.

Russia has ploughed capital into its grains infrastructure as part of a longer term strategy to dominate international wheat markets and a recent Egyptian tender has confirmed that Russian milling wheat remains competitive on regional markets.

But local Russian traders were discussing the possibility of export restrictions, reasearch group, SovEcon, which last week said drought could nearly halve grain exports to 12 million tonnes in the 2010/11 crop year, said.

 Russian officials are very careful giving crop forecasts but last week the economy ministry admitted this year‘s grain crop might be less than 80 million tonnes, five million tonnes below the latest official forecast.

Russia , which harvested 97 million tonnes of grain in 2009 after 108 million tonnes in 2008, exported nearly 22 million tonnes of grain, including flour in grain equivalent last year, down from 23.5 million tonnes in the previous season.

Meanwhile wheat crops in Western Australia, the country‘s top exporting state were also under threat from dry weather but favourable conditions elsewhere could make up for any crop loss, analysts said.

Any indication that the crop in Australia , the world‘s fourth largest wheat exporting nation, is endangered could put further pressure on world market prices.

Last week, SovEcon said the drought might cut the Russian grain production even further — to less than 70 million tonnes.

Fear of Russian and other Black Sea defaults on key deals to major destinations, including the number one wheat importer Egypt due to the drought has dominated talk in markets as other origins such as the United States look to step into the breech.

Russian state grain trader, United Grain Company, on Monday denied that it had defaulted on wheat shipments to Egypt.