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RE: [AGA Member] Anubias



I believe that the rhizome itself is photosynthetic
and requires light to grow. When it is buried the
rhizome loses any access to light and begins to rot. 

david

--- Steve Pushak <teban@powersonic.bc.ca> wrote:
> I don't bury the rhizome however I do bury about the
> lower 1/3 of the
> roots which descend from the rhizome when I
> install/plant them. As the
> plant grows and the rhizome extends, the plant will
> grow sideways or
> upward if it needs to get to the light. It will
> continue to send down
> vertical root/stems which spread down into the
> substrate gravel & mud
> below that. I believe that the plants gain an
> advantage by having their
> roots in the mud where they can access mineralized
> nutrients only
> available in the anaerobic part of the substrate.
> The roots & root hairs
> naturally grow into the regions that they "prefer"
> over time. I've never
> seen necrotic roots on Anubias but I don't plant
> them into strongly
> reducing (anoxic organic) substrates either.
> 
> Since these plants can be easily overshadowed by
> taller competitors, I
> sometimes pot my small Anubias b nana so that they
> gain an extra 4" of
> height in the tank. These little guys really need
> the help. I do the
> same thing with my Glossostigma which would quickly
> die if shadowed.
> 
> Steve
> 
> > Faruk wrote:
> >
> > >> Although the rhizome section is described as
> horizontal
> > subterranean
> > plant
> > stem, we know that Anubias' rhizome section should
> not be
> > buried. Would
> > anyone describe why Anubias' rhizome rots due to
> burying. Why
> > does it need
> > relatively aerobic conditions? <<
> 
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