The solar storm that brought the aurora borealis to large parts of the United States this weekend also broke critical GPS and precision farming functionality in tractors and agricultural equipment during a critical point of the planting season, 404 Media has learned. These outages caused many farmers to fully stop their planting operations for the moment.
One chain of John Deere dealerships warned farmers that the accuracy of some of the systems used by tractors are “extremely compromised,” and that farmers who planted crops during periods of inaccuracy are going to face problems when they go to harvest, according to text messages obtained by 404 Media and an update posted by the dealership. The outages highlight how vulnerable modern tractors are to satellite disruptions, which experts have been warning about for years.
“All the tractors are sitting at the ends of the field right now shut down because of the solar storm,” Kevin Kenney, a farmer in Nebraska, told me. “No GPS. We’re right in the middle of corn planting. I’ll bet the commodity markets spike Monday.”
Specifically, some GPS systems were temporarily knocked offline. This caused intermittent connections and accuracy problems with “Real-Time Kinematic” (RTK) systems, which connect to John Deere “StarFire” receivers that are in modern tractors and agricultural equipment. RTK systems use GPS plus a stream of constantly-updating “correction” data from a fixed point on the ground to achieve centimeter-level positional accuracy for planting crops, tilling fields, spraying fertilizer and herbicide, etc.