Soyabean futures opened higher at the Chicago Board of Trade on Friday due to expectations for a small crop in Argentina and good US exports, traders said. At 9:35 am CST (1535 GMT), the CBOT March soyabean futures contract was up 6 cents at $10.18 a bushel. CBOT March corn was 2 cents higher at $3.89-1/2 a bushel. CBOT March wheat was down 3 cents at $5.63-3/4 a bushel.