“ The biggest tariff by far--1,706 percent--is imposed on konnyaku root, followed by the 1,086 percent set for peas. Rice imports face a 778 percent tariff…According to World Trade Organization data, Japan's customs duties average 22.2 percent, much higher than the United States' 5.2 percent and the EU's 13.5 percent.”
Source: Tariff rates of over 1,000% set on some farm imports
Yoshihisa Mizukami
Yomiuri Shimbun
Dec. 2, 2010
http://www.yomiuri.co.jp/dy/business/T101201004462.htm