Some do experiment with that today, like this
[1] https://alainsprojects.com/the-primeval-code-der-urzeit-code...
I also remember news about chinese greenhouses experimenting with similar stuff, reporting good growth and much reduced need for pesti-/fungi-/whatever -zides, or none at all in the timeframe of the last 2 to 3 years.
It all resulted from research at Ciba-Geigy AG, Basel, Swiss now Novartis by Guido Ebner, thus also called "Ebner Effect".
Classic conspiracy material, because not usable for a company like that, so they stopped the research, and locked it away. (allegedly)
The researcher died meanwhile, but his sons have some patents, also selling this [2] https://fios-greenbox.net/
Some more lazy links...
[3] https://www.elstel.org/primeval-times-code.html
[4] https://vimeo.com/14844889
[5] https://www.scmp.com/news/china/science/article/2164365/elec...
I am really interested in building custom systems to experiment with plants. My problem is that I don't know what to test.
Presumably hydrogen peroxide does not taste good to caterpillars.