COLOMBIA OPENS APRIL/MAY COFFEE REGISTRATIONS Colombia opened coffee export registrations for April and May with the National Coffee Growers' Federation setting no limit, Gilberto Arango, president of the private exporters' association, said. He told Reuters the decision not to put any limit responded to "new factors" which have emerged from recent International Coffee Organisation talks in London, where producers and consumers failed to agree on a re-introduction of export quotas.