Bosch robot gets rid of weeds automatically and without herbicides

(From TFA)... "Given the scale of farming today, treating weeds chemically is really the only practical way for humans to keep them under control"

That's not true. Cultivators have been used for a long time to keep weeds under control. Chemicals have simply become more convenient for many. This pdf explains a lot about cultivators and is a great read for anyone interested in the topic of weed control.

http://www.sare.org/content/download/29730/413972/file/Steel...