Russia will introduce a duty on wheat exports from Feb. 1, adding to other restrictions with which it is battling a rise in domestic grain prices. Russia has been exporting record volumes from a large grain crop of 105 million tonnes as the rouble's plunging value has spurred a dash for foreign currencies. But last week, Moscow imposed informal export controls, including tougher quality monitoring and slashed railway loading programmes, in a bid to cool domestic prices while also unveiling plans to impose a duty on exports.
