HE HATES THESE CANS

I just planted a bunch of driller Diakon Radishes in my front yard to do some biological tillage on all of my clay soil.

Lots of info on YouTube about doing this.

I plan to leave most of them in the ground to compost, but I plan to pull some for eating.

The cool thing about them is that pull needed nutrients from deep underground.

This is what I bought: https://meritseed.com/driller-daikon-radish-annual/

I know you can send soil to be tested by your local university extension, but how do you test for conaminents like used hydrocarbons, arsenic, lead, glyphosate-based herbicides, etc?

I am about to embark on a hobby of composting and would like to know.