“The United States is likely to face a serious shortage of farm labor in the years ahead — especially as Mexico gets richer and sends fewer low-wage workers our way. … Enter the machines. In recent years, companies have been developing driverless tractors guided by GPS. Or drones that can monitor plant health from afar. Or sensors that can automatically figure out where fields need water. Or fully autonomous cow milkers. … Robots are slowly expanding into other areas, too.”

Source: www.vox.com