Mycorrhizal fungi and N-Fixation

Permacltur permacltur at
Tue May 23 11:42:08 EST 2000

I gather that the nodules were cut open because I inquired about the interior
color and got an answer -- yellow.  We have  had a response from a worker in
India who is going to try to replicate the results.   I have also received a
suggestion that some tomatoes form tubers, which is interesting all by itself. 
The person who reported the results said that each of her tomato plants was of
a different variety, reducing in my view the significance that those more
distant from the beans did not have root swellings.  I think we are going to
have to let this one ride unless we get some results from the folks in India. 
The more information I have, the less likely it seems that we can conclude
anything from this report.

Dan Hemenway
Barking Frogs Permaculture Center
Sparr FL USA

	<<Subject: Re: Mycorrhizal fungi and N-Fixation
From: bobharames at aol.comnojunk  (BobHarAmes)
Date: Mon, May 22, 2000 2:39 AM
Message-id: <20000522010903.02133.00000618 at>

I've worked on rhizobia, N2-fixation, N-transfer by VAM from soil to the host,
and also with tomato but never have seen nodules on tomato except nematodes.  I
suspect they may have actually observed root knot nematode on tomato and
confused it with rhizobia.  Were x-sections made of the tissue or rhizobium
cultured from surface disinfected nodules?  I'm skeptical also.  Dr. Bob Ames.


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