Agricultural commodities had good reason to drop on Thursday, with ideas that rain relief next week for Argentine crops will prove more significant than had been thought.
Furthermore, outside markets were broadly a little negative, as eurozone debt concerns reasserted themselves. Greece warned it may default in March unless unions agree further salary cuts, while Spain has unveiled plans for an extra E50bn in bank provisions.
Shares eased in early deals in Europe, notably in Spain, where they fell 1.2%