Martin, Will; Anderson, Kym - 2012
For individual countries, variable trade barriers can be used to reduce the volatility of domestic relative to world … estimates of agricultural distortions to assess its contribution to the price spikes in 1972-74 and 2006-08 for rice and wheat …. The analysis suggests that 45 percent of the increase in rice prices in 2006-08, and 30 percent of the increase in wheat …