Former UN head Kofi Annan has called for a "green revolution" to solve the food crisis threatening Africa."A genuinely African green revolution could lead to a doubling or tripling of food production," he told the BBC.
Africa needs direct, immediate help for farmers to stop food imports including new seeds and fertilisers, he said.
But political analyst and South African beef farmer Moeletsi Mbeki said the heart of the crisis was property rights - as most farmers do not own land.
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