ED DAMER, Sudan  Even as it receives a billion pounds of free food from international donors, Sudan is growing and selling vast quantities of its own crops to other countries, capitalizing on high global food prices at a time when millions of people in its war-riddled region of Darfur barely have enough to eat.

Here in the bone-dry desert, where desiccated donkey carcasses line the road, huge green fields suddenly materialize. Beans. Wheat. Sorghum. Melons. Peanuts. Pumpkins. Eggplant. It is all grown here, part of an ambitious government plan for Sudanese self-sufficiency, creating giant mechanized farms that rise out of the sand like mirages.

But how much of this bonanza is getting back to the hungry Sudanese, like the 2.5 million driven into camps in Darfur? And why is a country that exports so many of its own crops receiving more free food than anywhere else in the world, especially when the Sudanese government is blamed for creating the crisis in the first place?

African countries that rely on donated food usually cannot produce enough on their own. Somalia, Ethiopia, Niger and Zimbabwe are all recent examples of how war, natural disasters or gross mismanagement can cut deep into food production, pushing millions of people to the brink of starvation.