Does hippo crap get treated when hippos crap in the River Nile?
Did any crap in nature ever get treated in human history before some government decreed that it should be treated?
Is crap not the ultimate biodegradable product of life?

Well, Tonnington, according to folks of your mindset, humans are nothing more than an insignificant version of animal diversity.
How come then that human activity is decried in your world as something that destroys any possible future of any living creature in the world?

petros, sh1t, crap or any other form of waste also known as manure, is already properly formulated. It has been so for thousands, if not millions of years. It is BIODEGRADABLE. It is sustenance and food for the soil as it has been for the last few thousands of years.

Food for the soil doesn't necessarily mean it's safe to eat the crops that grow in the soil...

petros, sh1t, crap or any other form of waste also known as manure, is already properly formulated. It has been so for thousands, if not millions of years. It is BIODEGRADABLE. It is sustenance and food for the soil as it has been for the last few thousands of years.
Only since government regulators dabbled into something they knew nothing about it changed in order to placate politically correct softies.

So, the question you're really asking is how can someone return to integrated farming, but still meet the needs of a modern chemical feedstock dominated agri-business.
The answer is the system needs to change.