🚀 go-pugleaf

It is true that the nutrients are the same, but let me give an analogy for
what you are saying.  Inorganic fertillizers are dissolved in water,
applied as water soluble solids or applied as gasses (ammonia injection),
take a sieve add which ever inorganic nutrient source you wish and then
add water.  Is there any fertillizer in your sieve?  That water on your
shoes is called Groundwater, in some places groundwater pollution is a
major problem.  Now take the same sieve add manure or compost and pour
water through it.  This water is not cleaner, but contains less
nutrients, plants are very good at abstracting nutrients from organic
sources! Plants will preferencially abstract nutrients from the soil
organics over the inorganic sources for a number of reasons, therefore the
use of inorganic fertillizer results in depletion of the soil organic
matter (black soil turns brown then grey then blows away).  The use of
inorganic fertillizer in hydroponics works for several reasons, this is
engineered system designed for this process and there is NO soil to
deplete, in fact soil is counter productive in hydroponics (disease and
bugs).  They use rockwool, nothing (aeroculture) or sometimes pure sand.

C. Schultz (hydrogeologist and chemist)

On Sat, 11 Apr 1998, Harold Lindaberry wrote:

> I feel you may scrounge up a few studies some where but if you delve into
> them I feel you will find they aren't very scientific, but there are tons
> of data showing benefits of using inorganics, any good study on
> hydroponics should give you information on plant nutrition requirements
> but I expect that you are mainly interested in proving the opposite. If
> this is not the case check with your local experiment station, either the
> soils or plant physiology department. The chemical nutrients are the same
> regardless of whether come from organic or inorganic sources, to think
> other wise is in err
> 
> Tim Fullard wrote:
> 
> > I am currently trying to research for a project (and having difficulty
> > sifting through all the book listings). Does anyone have any
> > information or links to do with fertilisers and composts with regards
> > to the damaging effects of using inorganic materials.
> >
> > Any help would be gratefully received.
> >
> > Tim Fullard
> 
> 
> 
> 
>