Disease management/erradication

[Nicolasdperez]

Hello,

I have a few orchids that show symptoms of disease, and I have a few questions related to disease management:

1) How can a disease be eradicated from the host plant? I have cut diseased leaves off and tried fungicides for some of my orchids; however, new growth forms with the same disease symptoms. Would this scenario require a systemic fungicide, and if so, what kind?

2) What is the best method of disease prevention for growing? I understand that regulating the environment plays a substantial role in the influence of disease, but I am interested in other regulation methods to prevent diseases. Should fungicides be applied preemptively, or should the root microbiome be regulated? I have seen a schedule chart for fungicides here, but I wonder if fungicide use can be minimized by encouraging beneficial microbes to colonize the plant and potting media. Any suggestions?

Thank you for your time and help,

Nicolas D. Perez