The message
from "peterlsutton" contains these words:

What happens to the nitrogen Brian. You sound as if you know about this.
Plants contain nitrogen and although you can supply it in a fertiliser, in
the wild it must be absorbed from the air (I presume), but what happens when
you burn it?

It's absorbed from the soil in the form of nitrates, nitrites and salts
of ammonia, mainly.

What happens when you burn what?

--
Rusty
Open the creaking gate to make a horrid.squeak, then lower the foobar.
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