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Re: [GWL] Re: gardenwriters Digest, Vol 2, Issue 1
Do you have any references indicating that mycorrhizae aid in N nutrition?
Also, I believe that large amounts of P do not kill the fungi, but merely
suppress the development of mycorrhizae. Perhaps the plant chooses the easiest
route: using fertilizer P takes less energy than using P garnered by
mycorrhizae. After all, the fungi need to be fed, too, and use some of the
carbohydrates manufactured by the plants. I am not promoting fertilizer over
mycorrhizae. Nutrients gathered by mycorrhizae are more efficient to the planet
as a whole, not to mention being more "natural." I'd like your comments Doreen.
Doreen Howard wrote:
> Jeff Ball wrote:
> . The question is where is the
> > web site that talks about the fertilizer issue? I am assuming that the
> > release forms of fertilizer, synthetic or organic will not harm
> I've worked with mycorrhizae for 9 years and did a study for the USDA
> Research Station on it and heirloom tomatoes. I'm a believer in the fungi.
> Here is site will give you info on the fertilizer issue:
> It's a commercial site, but the principles know their stuff.
> Dumping large amounts of phosphorous and nitrogen into the soil will kill
> mycorrhizae. Their hypae are very adept at mining the stuff and trace
> elements from the soil. That said, mycorrhizae do need some nutrition. Use
> gradual release sources of N-P-K. Most take that to be compost and other
> organic matter. Fish meal pellets are a commercial fertilizer in the
> organic realm that work well with mycorrhizae, as does alfalfa meal and
> cotton seed meal. I even use Osmocote with success at half the amount
> suggested on the carton. The trick is to provide small amounts.
> Doreen Howard
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