The Group of 20 developing countries ministerial meeting today set a five-year time frame for doing away with trade distorting export subsidies by rich countries even as it sought to reach common ground with other developing country alliances. Remaining united on key issues, the group issued a joint statement about its concern over a logjam in talks at the World Trade Organisation over duties on agricultural products.The two-day conference was given a boost with Uruguay entering the G-20 today, making it the 21st member of this major developing countries alliance. Briefing newspersons, the Commerce and Industry Minister, Kamal Nath, said members recognised the diversity of the G-20 membership and yet their coming together represented their unity and strength. "We are negotiating our cause from a common platform," he said, denying any differences on major issues.