We have received the underpants (organic cotton, of course) to carry out the underpants test as part of Valentin's BTS thesis

The test involves burying a pair of underpants in a conventional plot, in a plot we converted to organic last year, and in a plot that has been organic and biodynamic for 4 years. The idea is to dig them up in a few months to see which soils have been able to decompose the cotton the fastest. A true sign of soil vitality.