Uncomfortable knowledge in sustainability science: essays in honor of David Pimentel (1925–2019)
Zanardo et al. address the controversial “horn manure” (Preparation 500) used in biodynamic
agriculture. They studied the changes during the manure maturation of the fungal
and bacterial communities inside the horns of cows. The analysis suggests that significant
changes take place during the process. This work proves that notwithstanding the demonization
of biodynamic agriculture as an esoteric quackery, still there are aspects of biodynamic
agriculture that can be scientifically investigated.