Developing countries must speak with one voice if they are to succeed in negotiating for developed countries to reduce extensive agricultural subsidies, said South African President Thabo Mbeki today.

He said negotiations on the matter are likely to be difficult during the World Trade Organisation (WTO) meet in Cancun, Mexico next week when the issue of farm subsidies is expected to dominate discussions.

"There are major difficulties on the matter of agricultural subsidies. Indeed, the fear is that Cancun would fail on this issue...