For the moment i heard only about the use of the:
trichoderma harzianum
a preventive solution, so as to give before the diseaes, because is an antagonistic fungus and work even against the gray mold Botrytis cinerea.
Some reference:
Trichoderma harzianum, a great fungicide
Some drawbacks:
- on orchid don't put on soil is necessary apply more often this solution
- during cold temperature isn't a solution much active
Other type of benefits:
Acclimatization of Micropropagated Orchid Guarianthe skinnerii Inoculated with Trichoderma harzianum (2008)
Example of product with this fung is:
CustomBio Biota Max
Which one known and use already this system?
Which other natural systems exist?
If possible that work well even during cold temperature?