Re: [gardeners] Re: Mycorrhiza questions...

Margaret Lauterbach (
Mon, 19 Oct 1998 13:05:27 -0600

>Mine said that mycorrhiza  are specific to species of plants.  
>For example, Don in CA is selling the fungi for use with tomatoes -- 
>he has a strain that will grow and work with tomatoes.  It may grow 
>and work with a few other plants, too.  But there is no general 
>purpose mycorrhiza that is the answer to everyone's problems or that 
>will work with every plant.  The last time I read Don's postings they 
>were testing their strain on many plants but it was sort of a shotgun 
>type approach -- there's no way to predict which plants will form a 
>symbiotic relationship with a particular strain.

I thought the substance was specific to specific plants, having looked up
the web page cited by Doreen Leonard last summer.  I have a pretty good
reference library, but I'm unable to find a definition for microrrhiza.
For some reason I have a cognitive association between it and mycelium.  Do
you have a definition for micorrhiza? (I see I've been spelling it with
three r's and you're not. Maybe that's the trouble)
>I have real questions about the usefulness of using any form of these 
>fungi in an organic garden such as yours -- one in which tomatoes are 
>planted in the same location year after year.   My own anecdotal 
>experience is that tomatoes replanted year after year in the same 
>soil grow exceptionally well.  My guess is that part of that result 
>comes from soil microbes that become established and flourish year 
>after year -- not necessarily just a single type of fungus but a 
>balance of many types of organisms.
Excellent point.  Thanks, Margaret, who still would like a definition if
you can find one.