Sounds like this may be worth trying.
http://www.premierhort.com/website/profweb/aprofweb/aprofgrower/agrowtechdata/atechdatabxmyc.html
Also see:
Another interesting related web page:
Link: www.premierhort.com/website/profweb/aprofweb/aprofgrower/agrowtechdata/atechdatabxmyc.html