Yes you can spray propiconazole again safely. I would try a different mode of action the next time you spray. I believe the labe states to rotate after 3 applications of the high rate for the targeted pest.

 

It's a good idea to have 2 different fungicides from different groups as it makes rotating them a lot easier and you don't have to worry about the fungus building up an immunity.

 

Ok good to know. Thanks @Mightyquinn and @LittleBearBermuda

 

I have found rotating Azoxystrobin, Propiconizole and Thiophanate Methyl pretty much guarantees fungus stays controlled in my Zoysia (which is cursed with fungus affinity).

 

@TampaBayFL Oh interesting. Do you have a yearly rotation you follow, or is it just when you notice it, you start spraying?

First time Zoysia owner here and I've been behind the 8 ball both times this year with fungus. I wanted to do preventive but wasn't exactly sure when to spray, mostly because I'm unfamiliar with when to do the preventative exactly.

Appreciate the help either way!

 

@TampaBayFL Oh interesting. Do you have a yearly rotation you follow, or is it just when you notice it, you start spraying?

First time Zoysia owner here and I've been behind the 8 ball both times this year with fungus. I wanted to do preventive but wasn't exactly sure when to spray, mostly because I'm unfamiliar with when to do the preventative exactly.

Appreciate the help either way!

I may be overly proactive, but I have more or less retained a year-round fungicide program to be safe. I would say that generally speaking, about every three weeks or so, I am putting one of those three fungicides down in rotation. This seems to have completely eliminated fungus from the lawn and I have not noticed any ill affects from so doing. Too much (and too heavy) propiconizole will turn the Zoysia a purple color though! I learned that last year It didn't seem to really hurt it at all though and it grew out of it quickly.

Ive been applying at roughly 2 oz/1000 for the Propiconizole and thiophanate and simply throwing a bag of Disease EX (Azoxystrobin) down over 2500 sq ft for convenience. I may switch that one to a liquid as well for savings, but periodically Amazon has it fairly cheap so I've just been buying a bunch when they have a sale.

 

I may be overly proactive, but I have more or less retained a year-round fungicide program to be safe. I would say that generally speaking, about every three weeks or so, I am putting one of those three fungicides down in rotation. This seems to have completely eliminated fungus from the lawn and I have not noticed any ill affects from so doing. Too much (and too heavy) propiconizole will turn the Zoysia a purple color though! I learned that last year It didn't seem to really hurt it at all though and it grew out of it quickly.

Ive been applying at roughly 2 oz/1000 for the Propiconizole and thiophanate and simply throwing a bag of Disease EX (Azoxystrobin) down over 2500 sq ft for convenience. I may switch that one to a liquid as well for savings, but periodically Amazon has it fairly cheap so I've just been buying a bunch when they have a sale.

Awesome! Thanks for sharing your process! I will def do something similar next season for my lawn.