AgBot farm units for weeding and other modular activities is a pretty active space;

* QuT AgBot II is still active (2016) [1]

* RIPPA (2018) is working commercially while being advanced [2]

* In cattle management Swagbot (2018) shows promise for future roles [3]

[1] https://www.youtube.com/watch?v=XXs21541-Vg

[2] https://www.youtube.com/watch?v=XP7GoNKcTS4

[3] https://www.youtube.com/watch?v=oxpZ1c7TsPI