Agricultural protectionism in rich and poor countries

From The New York Times (found via Marginal Revolution):

Two World Bank economists, Kym Anderson and Will Martin, concluded that if the world were to dismantle its agricultural protections, most of the benefits for developing countries would come from the reduction of their own systems of farm support. "Liberalization in the rich countries is a good thing, but in my opinion a small thing," said William Masters, a professor of resource economics at Purdue University and an expert on agriculture in Africa. "Poor countries' own barriers are the biggest constraint to their own development."