Unusual in the sense that it has not been practiced for hundreds of years and proven out. The short-term studies typically done with new practices are annoyingly inconsistent with reality. Time and lots of exposure are needed.
There’s lies, there’s damned lies, and then there’s studies. Monsanto’s maize study was only done for 90 days and then got approved. When the same study was replicated for two years, significant health issues were discovered.[1]
And by the way, Monsanto was the only one required to confirm that the study showed positive results. Safety testing is not done by the FDA, only required by the company, who may or may not be telling the truth about the results.[2]
Lies, damned lies, and studies.
So the question remains: Why should I if I were farming have to spend a lot of time, effort, and money to prove what I am not doing? Shouldn't it be the other way 'round?
[1] https://www.gmoseralini.org/faq-items/why-this-study-now/
[2] https://news.ycombinator.com/item?id=16704019