Looking for Research on Micorrhizae w/Hydroponic Nutes

I've been doing some research on the utility of micorrhizae in soilless mediums using hydropoinic nutrients (since that's my grow method). In various cannibis forums, I have read concerns that high concentrations of Phosphorus or Potassium found in hydropoinic fertilizers kills it off. Howver, I haven't been able to find any research confirming this.

To the contrary, I was able to find research indicating that micorrhizae work fine in fertilized mediums-- the microbes actually increase availablity of supplied nutrients, reducing the amount of fertilizers needed. Here's one example of a paper using sterilized soil innoculated with Glomus intraradices (the micorrhizae in ProMix BX) and fertilized with K2S04.

http://ecisi.com/wp-content/uploads/2012/03/125-134.pdf

If anyone has a reference to an article critical of the use of hydroponic nutrients with mycorrhizae, please post.

I was told in Uni that Mico is killed instantly by light, so if you're mixing it up in daytime and don't have a completely light-proof res and substrate, you're wasting your money.

I work with manual hydro-- a soilless medium (Promix and Perlite) watered by hand with hydro nutes. No problem keeping that Promix dark

The concern I have is if the nutes I'm using kill off the mycorrizae-- I use Foxfarm hydro nutes.

To my knowledge mico. and Fox farm organic nutes will promote a symbiotic relationship between your plants and the fungi. I Use mico outside in soil (which I know is completely different, but I use fox farm potting soil and an interesting thing happened. Not only did the roots form their own roots from the mico., but it promoted benefical predatory soil mites native to this area!
Anyways I use a Down to Earth product that contains 4 species of Endomycorrhizal fungi (Glomus intraradices being one of them) and 7 species of Ectomycorrhizal fungi. The Endo. penetrates the roots and the Ecto. just surrounds it. The earlier you inoculate Endo. (or Vesicular-arbuscular Mico.), the better your chances are of early, rapid colonization in the roots. In later stages the Ecto. can compete for nutrients and dominate the Endo, but never being anything but beneficial to your plants.

Thanks for the post, bgoodgrow,

Although FoxFarm has a few organic products, and they are frequently thought of as organic, not all of their products are organic. Grow Big Hydroponic has the following organic and non-organic ingredients:

Ingredients: Ammonium Sulfate, Ammonium Phosphate, Urea, Blood Meal, Potassium Nitrate, Potassium Sulfate, Earthworm Castings, Norwegian Kelp, iron EDTA, zinc EDTA, manganese EDTA, copper EDTA, chelating agent, Disodium Ethylenediamine Tetra Acetate (EDTA), sodium borate, and sodium molybdate.

I am comfortable with the non-organic ingredients. In fact, I find some of the inorganic ferts desireable, since they are more quickly available to my plants. I also recognize the value of micorrhizae, and want to know if I can have the best of both worlds.

Ahh see, completely different indeed sir. I know little about growing Hydro, It is an art in itself!
hmm..
http://www.supremegrowers.com/blog/do-chemical-fertilizers-kill-mycorrhizae
This next article says that high levels of Phosphorous wont kill or harm the Myco but it can slow their progress. Look on the second link down on the page, really cool
http://www.mycorrhizae.com/faqs/
Great topic!

Perfect. That's just what I was looking for. +rep.

Still looking for more posts, if anyone else has something to add.