According to fertilizer manufacturers, paradoxically, industrial pollution provided the necessary quota for cultivated soils, and since environmental improvements, filtering of factory fumes, agricultural land is in short supply and requires additional sulfur. http://www.yara.fr/fertilisation/purs-n ... la-sulfan/Did67 wrote: mention may also be made of sulfur derivatives, a pollutant for humans and a trace element useful for plants (especially crucifers). S is often a neglected limiting factor ...
Do you know how it goes for living soil?