I found one etailer who Ericoid Mycorrhizae for $37/8oz, and was wondering if it is worth it.

http://hydrobuilder.com/myco-edge-ericoid-mycorrhizal-blend-8-oz.html

My hypothesis is that there won't be much difference between inoculated and non. I suspect that the advantage of myco comes when nutrients are scarce. I suspect that in a fertilized pot culture, bb roots are able to obtain all they need without the fungus symbiosis. This has been borne out with other species studied, which showed advantages in conditions of moisture or nutrient deficiencies, but little or no advantage in optimal conditions.

I didn't go so far as to sterilize my potting mix to ensure no fungi were present. So it's a limited test of the effects of supplemental inoculation.

I also agree that any possible benefit could probably be duplicated by watering in a couple handfuls of dirt obtained near established and healthy plants.

When i first looked for this fungi for blueberries, the only kind available was commercial. Like 50 pound bags. The fungi is sold commercially.

charina, I'm very interested to hear the results of your experiment! You're right to worry that the non-innoculated pots might already have fungi in them. I also wonder if there's a way the inoculated ones might colonize nearby pots? In any case, I think many people would like to hear a followup to your experience.

I haven't taken any extraordinary steps to prevent cross contamination, other than to be sure to plant the non-inoculated prior to inoculating and planting the other plants. But the pots are close together, in part of facilitate as identical of treatment as I can, and that may lead to the fungi crossing to the non-inoculated plants even if not present in the bark mix initially. (I didn't use any peat that might contain the fungi or it's spores - only locally produced pine bark that as far as I can tell, comes from ericoid absent forests - were I really serious about this, I would have sterilized all mix, but I'm after real world effects, not lab effects).

My thought process follows one of the papers I read where both inoculated and non-inoculated plants had mycorhizzae (non-ericoid) present after a period of time, however the inoculated plant's infection rate was much higher, providing much greater benefits. If it is of benefit to blueberries in establishment in new conditions, I'm hoping that such benefit will be clear through top growth. All plants are receiving the same soil, light, temp, and fert program.

It might be useful if you were attempting to grow them in containers or a completely soiless medium- say pine bark- peat and sand.

Well you didn't look hard. i have no desire to convince you.

Thousands upon thousands of studies of various aspects of Mycorrhizal Fungi are on the net.
If you wish to find them, go to academic search sites like Microsoft academic search. Or Sciencedirect.com
http://academic.research.microsoft.com/
http://www.sciencedirect.com/

I found about 2 thousand studies, but have no desire to go through them to see which might be convincing. Here is a simple breakdown from Texas A&M

I have no doubts about the benefits of the association, the question is the benefit of inoculation in normal soils for blueberry production. Many universities provide guidelines for commercial blueberry production- I tried to find a single one that recommended routinely adding this product within such a guideline and failed. Maybe I didn't try hard enough but I spent a quarter of an hour.

The link you provided only enforced my current understanding about inoculation only being useful in soils where the natural balance of micro organisms has been destroyed.

Mychorizal associations have been heavily researched and inoculation has only been shown beneficial in sterile or unnaturally disrupted soils last I checked, which was some time ago.

The research I'm looking for is comparing performance of inoculated plants to those not inoculated, in a normal soil. I'm not trying to prove my superior knowledge, which isn't all that recent- just trying to improve on the knowledge I have and provide a useful opinion to the poster beyond personal anecdote.

That's what I love about you, you're so modest!
I gave you pointers and tools to accomplish your goals, but you have to do your own homework.
Multiple corporations sell fungi, you can take seminars on use. It's such a big business the demand for education on use is great.
http://www.fungi.com/seminars.html

Notice that all the seminars are sold out, but you can be placed on a waiting list.
I myself have never disagreed with any of your points, and have no desire to take up the other side of the argument.
Or to take on your challange All I ever said was I could only find the product in commercial settings. A rather simple statement. That has since changed. It is now available to the home user.I made no comment on usefulness or anything else. I have no interest in proving anything to anybody. Sorry you find that offensive. I'm going back to my garden, harvest time! TTYL.