The Small Robot Company in the UK, whose "Head of Intelligence" worked at DeepMind for 7 years, is another such company working on this (and other) problem(s).
Their solution has three robots named Tom, Dick, and Harry. Tom maps the field, assessing soil conditions and weeds. Dick zaps weeds. And Harry is the haulier of nutrients for crops.
Their solution has three robots named Tom, Dick, and Harry. Tom maps the field, assessing soil conditions and weeds. Dick zaps weeds. And Harry is the haulier of nutrients for crops.