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Lettuce See the Future: Japanese Farmer Builds High-Tech Indoor Veggie Factory

http://www.gereports.com/post/91250246340/lettuce-see-the-future-japanese-farmer-builds

The farm is nearly half the size of a football field (25,000 square feet). It opened on July and it is already producing 10,000 heads of lettuce per day. “I knew how to grow good vegetables biologically and I wanted to integrate that knowledge with hardware to make things happen,” Shimamura says.

The farm uses 17,500 LED lights spread over 18 cultivation racks reaching 15 levels high.

The LED lights are a key part of the farm’s magic. They allow Shimamura to control the night-and-day cycle and accelerate growth. “What we need to do is not just setting up more days and nights,” he says. “We want to achieve the best combination of photosynthesis during the day and breathing at night by controlling the lighting and the environment.”

Shimamura says that the systems allows him to grow lettuce full of vitamins and minerals two-and-a-half times faster than an outdoor farm. He is also able to cut discarded produce from 50 percent to just 10 percent of the harvest, compared to a conventional farm. As a result, the farms productivity per square foot is up 100-fold, he says.

By controlling temperature, humidity and irrigation, the farm can also cut its water usage to just 1 percent of the amount needed by outdoor fields.