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Re: Mycorrhizae is a secret weapon

All this is true and very clearly explained.  However, there is a huge
omission.  If too much N-P-K is put into the soil--especially the N and P,
they kill mycorrhizae.  When mycorrhizal fungi is in soil, you have to be
very careful about not adding large amounts of fertilizer--even amounts
recommended on synthetic fertilizer packages are too much.  The best
nutrition for mycorrhizae-inoculated  soil is compost.  I have experimented
with small amounts of Osmocote® and fish meal pellets, which are also
gradual release.  They do well and don't kill mycorrhizae.
Doreen Howard

----- Original Message -----
From: "Suzi McCoy" <buzz@impact-pr.com>
To: <Gardenwriters@topica.com>
Sent: Sunday, March 31, 2002 11:24 AM
Subject: RE: [GWL]: Mycorrhizae is a secret weapon


> Here's an overview of some scientific studies on how mycorrhizae boots
> root growth and enhances the health of soil.  For more information on
> soil enhancers contact GWAA member Ed Bloodnick at Premier Horticulture
> -- 800-424-2554 or Susan McCoy 610-388-9330.
>
> SCIENTISTS FIND TINY PLANT ENCHANCERS
> "WORK MIRACLES" IN THE GARDEN
>
> From tired gardens to sandy beaches, scientists have found that
> re-introducing mycorrhizae to the soil can be miraculous.
>
> The natural growth stimulator helps establish difficult planting areas,
> boosts plant growth and almost doubles flowers, fruits and vegetables.
>
> In some cases, professional growers have almost doubled the amount of
> peppers, strawberries, asparagus, carrots and potatoes.
>
> "Mycorrhizae, the beneficial soil fungi that colonize plant roots, pack
> a double punch," explained Dr. Dennis Douds, PhD, of the US Department
> of Agriculture Eastern Regional Research Center. "These fungi enhance
> plant growth and improve the soil."
> Scientists have discovered:
> . Mycorrhizae search the soil for more food for the plant. "In
> general, mycorrhizae have a very good role in plant sustainability and
> the health of the soil," said Dr. Douds. "Their main benefit is helping
> roots pick up nutrients from the soil, but they do so much more."
> . In poor soil and stressful conditions, mycorrhizae help plants
> flower and fruit more, resist diseases and tolerate drought.
>
>  "Mycorrhizae can do miraculous things when the soil is low in
> phosphorous or when there are other stresses," Dr. Douds said. "They
> help plants withstand water stress and resist fungal diseases and other
> soil pests. Mycorrhizae help plants cope better."
> Roots with mycorrhizal fungi can reach 90 times more phosphorous than
> uncolonized roots, added Dr. Douds.
>
> The mycorrhizae explore the soil far beyond the root, take up
> phosphorous, bring it back into the root and release it to the root
> cell," he explained.  "In return, the root gives the fungus glucose it
> needs."
>
> . In all soils, mycorrhizae enhance soil structure and produce
> healthier plants. The mycorrhizal fungal netting reaches from root to
> root, improving soil structure, Dr. Douds explained. "Those strands help
> to bind small particles of soil into larger particles." Those larger
> particles hold water better, resist erosion and increase soil porosity
> so the plant absorbs more oxygen.
>
> PRO-MIXR's Exclusive MycoriseR
> For more than five years, Premier Horticulture, the industry's leading
> producer of soilless potting and planting mixes, has included
> mycorrhizae in several professional potting mixes.
>
> Coined MycoriseR, PRO-MIXR is the only brand of professional and home
> garden mixes containing these natural beneficial fungi on the market
> today.
> gardener and weekend landscapers in PRO-MIXR Vegetable and Flower Bed
> Mix.
> This exclusive, natural plant enhancer has been scientifically studied
> and the results proven.
>
> "PRO-MIX with MycoriseR is a next-generation, cutting-edge product for
> growers," said Ed Bloodnick, Premier Horticulture's Director of Product
> Development and Refinement.
>
> At the USDA's Eastern Research Center, Dr. Douds found that  PRO-MIX
> with MycoriseR significantly enhanced the survival of rooted cuttings
> from the umbrella pine tree.  Nearly three-quarters of the treated
> cuttings survived compared to about one quarter without the growth
> stimulant.
>
> "Cuttings into the mycorrhizae mix had better survival and better
> formation of the root primordial, which are little bumps of callus on
> the cut end." Dr. Douds said in his study published in the February 1995
> issue of HortScience.
>
> Other Research Findings
> . The mycorrhizal condition is the rule among plants, not the
> exception, writes David Sylvia, Professor of Soil Microbiology, Soil and
> Water Science at the University of Florida. An estimated 95% of all
> plant species form symbiotic associations with fungi.
> . For infertile, nutrient-poor, or moisture-deficient soils,
> nutrients taken up by mycorrhizal fungi can lead to improved plant
> growth and reproduction, said Sylvia. Mycorrhizal plants are often more
> competitive and better able to tolerate environmental stresses than are
> nonmycorrhizal plants.
> . Green peppers grown with mycorrhizae weighed 20 percent more
> than control plants. USDA's Dr. Douds added mycorrhizae to the seedlings
> at his laboratory at the Eastern Regional Research Center then
> transplanted them to an experimental bed at the Rodale Farm.
> . In a study of beach grass restoration (1989), UFL's David Sylvia
> found that grasses planted with endomycorrhizae from native dunes spread
> more rapidly and grew significantly bigger than those without fungi. For
> details visit www.dmsylvia.ifas.ufl.edu .
>
> Premier Horticulture is the industry's leading producer and distributor
> of premium quality potting and planting mixes for both professionals and
> home gardeners.
>
> For more information on the PRO-MIX line of products, helpful hints, and
> planting and potting suggestions, log on to Premier's web site:
> http://www.premierhort.com.  To find a garden center nearest you, click
> on "Where to buy PRO-MIX."
>
>

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