30 years and counting: U.S. potato growers want a presidential push to open Japan

U.S. potato growers have spent more than 30 years trying to sell fresh table-stock potatoes in Japan. After another round of talks in Tokyo this month, the industry’s top lobbyist says only a conversation between the two countries’ leaders is likely to open the market.

“We’re hopeful the president would sit down with the Japanese Prime Minister,” National Potato Council (NPC) CEO Kam Quarles told Brownfield Ag News. “I think one conversation, one elevation of this to a presidential level discussion would result in a $150 million per year in new U.S. ag exports.”

A proposal “Japan couldn’t even meet”

Quarles traveled to Tokyo the week of Oct. 12 alongside other U.S. potato industry representatives, backing up American negotiators at a bilateral meeting. In an Oct. 26 opinion piece for Agri-Pulse, he wrote that full market access for fresh potatoes was the top U.S. priority there.

Japanese officials answered with a phytosanitary proposal that Quarles told Brownfield set a standard Japan itself couldn’t meet. Under it, a pest or disease problem anywhere in a state could disqualify that whole state or production area from shipping, regardless of how secure and pest-free the actual exports were. He sees competition, not plant health, as the real concern. “Their domestic industry has a complete monopoly on their domestic market for table stock potatoes, and they don’t want to give that monopoly up,” he told the Red River Farm Network.

Politics in Tokyo

In the Agri-Pulse piece, Quarles pointed to signs of resistance in Japan. Newly appointed Agriculture Minister Arata Takebe, who represents a Hokkaido district, told parliament Oct. 16 that discussions on lifting the ban will take “considerable time.” Hokkaido grows about 80% of Japan’s domestic potatoes. Prime Minister Sanae Takaichi has said the government will approach the talks “with caution and a firm stance” to protect Japanese agriculture.

The U.S. side argues the science is settled. Quarles notes that U.S. potato exports have never introduced a pest into a foreign production area, and that WTO rules bar sanitary and phytosanitary barriers without scientific justification. On the Eye on Potatoes podcast, as excerpted by the Ag Information Network of the West, he said American and Japanese potatoes are different products that would complement each other.

What’s at stake for growers

• $150 million to $200 million a year. That’s NPC’s estimate of the opportunity, which Quarles has called roughly a 10% boost to U.S. potato exports worldwide.
• Who benefits: fresh-market shippers in the major potato-growing states, led by Idaho and Washington.
• What’s next: USDA and the U.S. Trade Representative are pressing Japan, and lawmakers wrote to President Trump earlier this year asking him to raise the issue with Japan’s leadership.

For specialty-crop exporters generally, the case is a reminder that tariff deals are only half the battle. Technical market access, the plant-health protocols country by country, often decides whether a crop can actually ship.