Paramagnetic Electroculture
I delved into this a little bit in the 90s, mainly just research and reading. Since this was early Internet almost all the research was done in large city libraries.
I did perform one little small scale experiment. While I did have outstanding results, I really couldn't attribute it directly to the experiment, as I did make other changes at the same time. I know! Not very scientific, but I had food to grow.
I do remember reading about Paramagnetic material well before the 90s. I'm pretty sure it was something from Mother Earth magazine. I vaguely remember something about some volcanic emissions were paramagnetic.
Kinda interesting that this podcast came up when it did with @Waira little chemistry lesson yesterday.
I think it sounds like some interesting experiments to me!

Be patient, it does take them a little bit to get into the meat and taters of the topic.