At the recent CWSS meeting in Monterey there were a number of presentations on the impact of precision and robotic technology in weed management. The weed school consisted of presentations that detailed technology for large scale monitoring of agricultural fields as well as small autonomous weeding robots that differentiate crops from weeds and selectively kill the weeds in the same pass. Both scales of technology have their place. Large-scale cropping systems such as wheat in the great plains are grown on very large farms where efficiency and ability to monitor large areas at low-cost is essential. California vegetable farms tend to be much smaller and more intensive with workers in every field most every day for harvesting,...