How does gps help with planting crops?

A GPS helps with planting crops because you can follow exact coodrinates. A good GPS system will allow you to be accurate within 5 feet, and a great one within 5 inches. This allows you to plant, accurately, to maximum amount of crops without planting outside the specified area. A GPS also allows for less overlapping on passes through a field which saves a lot of diesel fuel and time for farmers.