Dairygold’s chief executive Jim Woulfe has warned of stark consequences for Ireland’s dairy industry north and south if Brexit negotiations end without an agreement on free trade between the UK and the EU.In this case, the default WTO tariff of €1,671/t would apply to cheese, which Woulfe told the Irish Farmers Journal is equivalent to 16c/l of manufacturing milk. “This is more than half of the current milk price,” he said, speaking ahead of the IFA’s conference on Brexit for farmers at Goffs in Kill, Co Kildare.