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Irrigation System Talks to Plants to Find Out When they Need Water -- Cutting Water Use by 30-50%
It has the capacity to reduce water use in any system, from a well-manicured lawn to a rural vegetable farm in North Africa, and compared to drip irrigation which is based on a similar idea, it can reduce water use by 30-50%, revolutionizing the science and methods of irrigation in the face of a warming climate, longer droughts, and water shortages.
Responsive Drip Irrigation (DRI) has designed a watering system that installs tubes under the earth filled with pore-like depressions. As plants begin to get thirsty they produce a certain chemical in their roots. The micropores in the tubes in turn detect this chemical and release a water drip that will continue until it detects the plants have drunk their fill.