For fungicide products used as part of a good pest prevention and maintenance program that are listed as acceptable with the OMRI (organic certification standards)
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Oxidate (hydrogen dioxide)
Serenade
Actinovate
Millstop
Stylet Oils
Neem oils
Sulfur based products
A Sulfur burner

Any of the above will work well with your clone quarantine program.

If you don't have a good pest prevention / management program in place yet and develop an extreme PM infestation, you might consider two products not on the OMRI list, but are far less toxic than Eagle 20; they are Procure and Compass.