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? << > > ------------------ > To unsubscribe from this list, please send mail to > majordomo@thekrib.com > with "Unsubscribe aga-member" in the body of the > message. Archives of > this list can be found at > http://lists.thekrib.com/aga-member/ > __________________________________ Do you Yahoo!? Yahoo! Tax Center - File online by April 15th http://taxes.yahoo.com/filing.html ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe aga-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/aga-member/