Ayuchi

Ayuchi Co., Ltd. (株式会社あゆち) is a Japanese agritech company based in Shiso, Hyogo Prefecture, founded on July 3, 2007. The company is dedicated to the research, development, and commercialization of 'Mizunoyume' (みずのゆめ), an ultra-dwarf, early-maturing rice variety that can be cultivated entirely without soil using hydroponic methods. The variety was conceived from the aspiration to 'grow rice even on a space station,' and its compact stature and rapid growth cycle—allowing harvest in as little as two months—make it suitable for cultivation in deserts, cold regions, and even space environments. Ayuchi's core business revolves around providing Mizunoyume rice seeds, cultivation know-how, and complete hydroponic cultivation systems. The company has developed proprietary LED lighting optimized for rice hydroponics, along with automated control systems for indoor illuminance, temperature, humidity, nutrient solution, pH, and CO2 levels. This enables a fully automated indoor multi-tier hydroponic system capable of achieving six harvests per year. The company also engages in breeding improvements to enhance grain size and plant height without losing the dwarf characteristic, and collaborates with universities and research institutions. Ayuchi positions its Mizunoyume rice as a solution to global food crises, offering a pesticide-free, soil-independent cultivation method that can be deployed in regions lacking agricultural infrastructure. The company provides its seeds and systems to contract partners and is actively seeking overseas research institutions, companies, and municipalities for joint research and local cultivation projects. Notable installation examples include Kasai City in Hyogo Prefecture, Fukuyama City in Hiroshima Prefecture, and Kamagaya City in Chiba Prefecture. The company is led by Representative Director Shinichi Oku, with directors Norihisa Otani and Gen Miyazaki. Ayuchi remains a private company and continues to promote its vision of sustainable, location-independent rice production.

Ayuchi Co., Ltd. was established on July 3, 2007, in Shiso, Hyogo Prefecture, Japan. The company's origins are rooted in a long-term research project aimed at developing a rice variety that could be grown in extreme environments, including space. This led to the creation of 'Mizunoyume,' an ultra-dwarf, early-maturing rice variety. Over many years, Ayuchi conducted repeated selection and cultivation trials to stabilize the variety and develop a soil-free hydroponic cultivation method. The company pioneered a fully automated indoor multi-tier hydroponic system that enables six harvests per year, using proprietary LED lighting and automated controls for environmental factors. Ayuchi has since provided its seeds, know-how, and systems to partners in various Japanese municipalities, including Kasai City (Hyogo), Fukuyama City (Hiroshima), and Kamagaya City (Chiba). The company continues to pursue breeding improvements and seeks international collaborations to expand the reach of its technology.

• Ayuchi Co., Ltd. founded in Shiso, Hyogo, Japan.

• Development of ultra-dwarf, early-maturing rice variety 'Mizunoyume'.

• Creation of fully automated indoor multi-tier hydroponic system achieving 6 harvests per year.

• Installation examples in Kasai City (Hyogo), Fukuyama City (Hiroshima), and Kamagaya City (Chiba).

Innovative agritech company providing soil-independent, pesticide-free rice cultivation solutions to address global food security.

• Mizunoyume rice seeds

  Ultra-dwarf, early-maturing rice seeds provided to contract partners.

• Hydroponic cultivation system

  Fully automated indoor multi-tier hydroponic system with proprietary LED lighting and environmental controls.

• Cultivation know-how

  Pesticide-free hydroponic cultivation know-how for 6 harvests per year.

• Breeding improvement services

  Improvement of dwarf rice varieties in collaboration with universities and research institutions.

1. 1みずのゆめの籾を提供し、安定的なコメの水耕栽培システムの提供 | 株式会社あゆちayuchi-mizunoyume.com
2. 2Ayuchi - Wikidatawikidata.org