For well over 10 years it has been very common to vary treatment within a field. Any harvester made in that time has had real-time GPS tracking of the yield thr

For well over 10 years it has been very common to vary treatment within a field. Any harvester made in that time has had real-time GPS tracking of the yield throughout the field. Spray applications can be applied to particular areas with an indicated need, with individual sprayer head control (all GPS tracked). Year-over-year tracking enables another level of improvement. Pairing satellite or drone imagery is also common to determine what the best move is going forward. A decade ago I made a spreadsheet to simulate the robot tending to a field problem, working with an entrepreneur. In the end, I couldn't find a wide range of parameters where it could make sense for corn or soybeans. The robots would simply be too tiny, slow, and expensive to be feasible. Some pros the entrepreneur was targeting were reduced soil compaction (leading to better yield), ability to operate in more marginal conditions (getting stuck in mud or slipping/spinning wheels messes up fields), and ability to deploy a fleet of robots rather than being constrained to working one part of a field in a huge piece of equipment.