"undergroundbob" wrote
in message ...

I've heard of an oganic farm which has had huge success using
volcanic
lava dust as fertiliser.

Then they might as well apply calcium superphosphate, Kainit and
suchlike and call it a day.
Lava dust must be just about the epitome of inorganic fertiliser.
Has someone checked the radioactive content of that stuff?

They were stoked with the results, however I
have no idea where you would get some! Unless you know someone in
Iceland....

Franz