Hello,
I have been using the services of
Inga Meadows
Extension Plant Pathologist – Vegetables & Herbaceous Ornamentals
NC State University Mountain Research Station.
Here page with instruction can be found in their blog
She is also part of the Expert Advisory Group and mad a presentation last September on the topic. View Presentation
I have also been recommended the services of
Efren Cazares
Mycology Consultant, PhD
MycoRoots (http://www.mycoroots.com)
but have not yet used his services.