Soyabean futures on the Chicago Board of Trade fell to session lows at midmorning on Friday on improving crop weather in South America and fears that China might switch some purchases of US soybeans to South American origin, traders said. As of 10:30 am CST (1630 GMT), March soyabeans were down 8-3/4 cents at $9.23 per bushel. But the contract stayed above Thursday's 3-1/2 month low of $9.21. March corn down 1/4 cent at $3.61-1/2 per bushel.

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