The GPS data is needed to log the planting, modern farmers use a lot of statistics and data analysis to increase yield. In the case of planting, the position

The GPS data is needed to log the planting, modern farmers use a lot of statistics and data analysis to increase yield. In the case of planting, the position of planting is stored so the machinery wont run it over or double plant. Later seed quantity and distribution is analyzed against yield when harvesting to hone down on the best parameters for the crop and field.