New study explores reviving rice production in Hawaii

HONOLULU (HawaiiNewsNow) – New research suggests Hawaii could once again produce its own rice—potentially strengthening the state’s food security.

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A study by researchers at the University of Hawaii at Manoa and the Tokyo University of Agriculture and Technology found high-quality Japanese rice varieties can thrive in Hawaii using traditional irrigation systems, rather than flooded paddies.

Researchers grew two short-grain rice varieties in Kapaa, Kauai, during the summer of 2025. The crops produced yields comparable to those in Japan and reached maturity in just 97 days—more than a month faster than crops grown in Tokyo.

“This was an excellent start to the collaborative research to explore the potential of bringing back rice farming to Hawaii,” said Professor Tomoaki Miura of UH Manoa’s College of Tropical Agriculture and Human Resilience.

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The study also found Hawaii’s climate produced heavier grains with a high whole-grain ratio and lower protein content—qualities associated with softer, stickier rice.

Hawaii currently imports all of its rice, about 140 million pounds each year. Researchers said establishing local rice production could play an important role in strengthening the state’s food security.

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