As the average age of farmers globally creeps higher and retirement looms, Japan has a solution; robots and driverless tractors.

The Group of Seven agriculture ministers began their two-day meeting in Niigata on Saturday for the first time in seven years to discuss how to meet increasing food demand as aging farmers retire without successors. With the average age of Japanese farmers now 67, agriculture minister Hiroshi Moriyama will outline his idea of replacing retiring growers with Japanese-developed autonomous tractors and backpack-carried robots.

U.S. Agriculture Secretary Tom Vilsack has warned that left unchecked, aging farmers could threaten the ability to produce the food the world needs. The average age of growers in developed countries is now about 60, according to the United Nations.