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Message: <blockquote data-quote="ibnanv" data-source="post: 16895736" data-attributes="member: 218596"> Japanese plant experts produce 10,000 lettuce heads a day in LED-lit indoor farm        <img src="http://www.independent.co.uk/incoming/article9601842.ece/alternates/w620/LEDfarm.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />          The LED-powered racks rise 15 levels high and are housed within an old Sony Corp semiconductor factory   A physiologist has turned a former semiconductor factory into one of  the world’s largest indoor farm, cultivating lettuces with LED lights.At  almost half the size of a football pitch, the farm, which opened in  Japan in July, is already churning out 10,000 lettuce heads a day, the  brains behind it say.Plant physiologist Shigeharu Shimamura  wanted to explore ways that man could keep up with the ever-increasing  food demand while bypassing the risks brought on by drought, crop  disease and natural disasters.“I knew how to grow good vegetables  biologically and I wanted to integrate that knowledge with hardware to  make things happen,” Mr Shimamura said.The climate controlled  room is powered by LED fixtures that emit light at wavelengths – the  most ideal for plant growth – while also giving the ‘farmers’ power to  control the night and day cycles.The lights were built by  American multinational General Electric (GE), which detailed the farm  within a self-produced publication.  <img src="http://www.independent.co.uk/incoming/article9601904.ece/alternates/w460/Lettuce.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> The farm reportedly produces lettuces 2.5 times faster than outdoor fields  “What we need to do is not just setting (sic) up more days and nights,”  Mr Shimamura added. “We want to achieve the best combination of  photosynthesis during the day and breathing at night by controlling the  lighting and the environment.”The lights give them the ability to  control temperature, humidity and irrigation, allowing it to cut its  water usage to 1 per cent of that needed by outdoor fields, while also  growing lettuces two-and-a-half times faster, the experts claim.The farm comprises of 17,500 LED lights on “18 cultivation racks reaching 15 levels high,” GE says.The  Japan arm of the corporation said it hopes that indoor farms such as  this one in the Miyagi Prefecture, which was badly damaged by the  powerful earthquake and tsunami in 2011, could solve food shortages in  the world.“Finally, we are about to start the real agricultural industrialization,” Mr Shimamura said.GE isn’t the only electrical firm trialling the new method. Philips has partnered with Green Sense Farms, an Indiana-based vertical farm which produces herbs, leafy greens and lettuces using LED lights. </blockquote>

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