"This is a green addiction with the potential to spread, with more than 20 states affected by some form of drought and water restrictions a daily reality in cities across the nation.
At least three companies are competing in the market for subterranean wireless sensors, which monitor moisture, temperature and salinity in the soil and feed the data to a software network accessed remotely on a laptop, a handheld device or a desktop computer. The system could be used far beyond the golf course - on other athletic fields, in agriculture, in both home and commercial landscaping, and in parks."
"...Early adopters say they will cut an average of 10 percent of their typical water use, amounting to millions of gallons of water each year. At that rate, the system would pay for itself within the first year, depending on the volume of water a course uses."