Thanks for taking time to make such a helpful response.
From your definitions I’m looking for micro nutrients, which I’ve found in a foliant fertilizer.
I suffer a chronic lung disease and therefore I am reluctant to use any aerosol dispensing method no matter what the MSDS says.
I agree entirely on soil improvement and will post later on my on going composting project which this year has produced 7m^3 of compost and I hope to at least double that next year.
Again, thank you for your informative post.