A Japanese firm will open the world's first fully-automated farm, with robots handling almost every step of the process, from watering seedlings to harvesting crops.The Kyoto-based Spread firm said that the indoor greenhouse will start operating by the middle of 2017 and produce 30,000 heads of lettuce a day. It hopes to boost that figure to half a million heads of lettuce a day within five years.The greenhouse, measuring about 4,400 square meters, will have floor-to-ceiling shelves where the produce is grown."Seed planting will still be done by people, but the rest of the process, including harvesting, will be done by industrial robots," company official Koji Morisada said.