The agriculture ministry has estimated that annual production from agriculture, forestry and fisheries could fall by ¥3.4 trillion if Japan joins the Trans-Pacific Partnership free-trade agreement, ministry sources said Friday.

The estimate is for a scenario in which Japan would repeal tariffs on agricultural, forestry and fisheries imports under the TPP with the 11 planned participating countries, including the United States.

The estimated decline is smaller than the ¥4.5 trillion stated by the Agriculture, Forestry and Fisheries Ministry if tariffs on these imports from the rest of the world were to be eliminated.

Japan has yet to participate in TPP negotiations, while Canada and Mexico have recently been allowed to take part.