08/10/2010 (Agence Europe) - In April of next year, New Zealand Ambassador to the WTO David Walker will step down from his post as chairman of the WTO agricultural committee to return to the foreign ministry in Wellington. WTO member countries will, then, have to appoint a new agricultural mediator in the Doha negotiations. The next meeting of the agriculture committee is scheduled for 6 December. (E.H./transl.rt)