Subject: Re: [permaculture] mycorhizae thread - this gem of info: plant selection of appropriate VAM's & VAM-stimulating natural plant extracts
Date: Sat, 23 Mar 2013 14:31:04 -0400
On Sat, Mar 23, 2013 at 1:44 PM, Lawrence London <lfljvenaura@gmail.com>wrote:
>
> There are more posts in this thread in the sanet-mg archives that this
> forwarded post from me was included in.
> There were replies with a lot more info on :
> 1) "determine how the different crop plants differentially select for
> certain
> species of VAM among all that are availible in the soil."
> 2) "that certain natural, plant-produced chemicals can
> stimulate the existing VAM to higher levels of activity. These
> chemicals were originally derived from red clover"
> [a group actually produced such extracts to make a marketable ag product
> from]
>
> Also, Dale Wilson mentioned a researcher in Indiana who took soil samples
in a large region of that state in order to catalogue the different
varieties of VAM's that occurred and what their plant associations were. I
will try to find this post or article on the web.
articles<http://scholar.google.com/scholar?hl=en&lr=&q=related:8imyaph64tUJ:scholar.google.com/&um=1&ie=UTF-8&sa=X&ei=I_NNUfbHCIix0QGMu4GIBw&sqi=2&ved=0CHMQzwIwBg>
Nov 26, 1990 – Stimulatory Compounds from Clover (Trifolium repens)
Roots *...* At 5 ppm, these compounds *stimulated* hyphal growth in
vitro and root *...* *Vesicular*-*arbuscular mycorrhizae* (VAM) result
from a *...* under vacuum, a solution of the *extract* in CHCl3-MeOH *
.....* from 14 ppm in alfalfa to 1,700 ppm in *red clover* (16).
8.
ICOM3 Abstracts - *Mycorrhiza* Information
Exchange<http://mycorrhiza.ag.utk.edu/latest/icoms/icom3/icom3.htm>
*mycorrhiza*.ag.utk.edu/latest/icoms/icom3/icom3.htm
Electrophysiology of *vesicular arbuscular mycorrhizal* fungi.
*...*stages of
*arbuscular mycorrhiza* on uptake of zinc and phosphorus by *red
clover*from
*.....* The ectomycorrhizal fungal community in soil as identified from
soil DNA *extracts*. *....* chemical signals from a host root exudate
synergistically *stimulate* hyphal branching of *...*
9.
[PDF] Bibliography on *Vesicular Arbuscular
Mycorrhizae*<http://pdf.usaid.gov/pdf_docs/PNAAP692.pdf>
pdf.usaid.gov/pdf_docs/PNAAP692.pdf
File Format: PDF/Adobe Acrobat
Introduction. This bibliography on *vesicular*-*arbuscular
mycorrhizal*associations was motivat
*...* to *stimulate* nutrient uptake by plants. The dis- *....* and
othfe nutrients to be *extracted* frc very inoculum *.....* irrigation,
bee pollination of *red clover* cv.
10.
[PDF] Effect of mycorrhization on the isoflavone content -
>
> <>
>
> Article: 5512 of bionet.plants
> From: niemirab@student.msu.edu (Brendan A. Niemira)
> Newsgroups: bionet.plants
> Subject: Re: Mycorhizzae vs. Fertilizer
> Date: Thu, 02 Mar 1995 11:04 est
>
>
> For agronomic crops, you're talking about vesicular arbuscular
> mycorrhizae (VAM), a symbiotic endomycorrhizal fungus. These are
> ubiquitous anyway, and
> not very host-specific, so there is very little need to inoculate the
> field in order
> to introduce them. The big trick is getting them to colonize your crop
> plant to such an extent that fertilizer inputs can be reduced. You can a)
> build up the population in the soil such that even moderately active fungi
> result in
> heavy coloniazation, b) put something in the soil to stimulate the activity
> of smaller populations to get heavy colonization.
>
> Crop rotations have been shown to have a definite impact on the population
> dynamics of VAM, and work is currently being done (by me, among others) to
> determine how the different crop plants differentially select for certain
> species of VAM among all that are availible in the soil.
>
> Other workers have shown that certain natural, plant-produced chemicals can
> stimulate the existing VAM to higher levels of activity. These
> chemicals were originally derived from red clover, a popular sequence in
> crop
> rotations. This may shed some light on why rotations are effective
> w/regard to VAM.
>