[loceng]

The Sacred Cow documentary is worth watching which goes into detail of this cycle - including that a lot (most?) crops use animal manure for fertilizing, so you still need the animals.

[pkphilip]

Apart from that, livestock grazing has been used effectively to fight desertification by Allan Savory and others.

https://ourworld.unu.edu/en/reversing-desertification-with-l...