What brand of copper fungicide do you guys use? I've never had an issue with my JBPs in all the years I've been working with them but now I do and I have to work fast because the needle cast is spreading quickly. These last few summers with the intolerable heat for a few months without end, must be having some effect on their health and causing them to weaken a lot. I've avoided watering the foliage all summer so with the dry heat I'm not sure why this is happening but I lost one tree already because of the issue. Also how often do you use the stuff and I'm assuming you do a drench? Any help will be appreciated. Thanks.
Copper Fungicide - What Brand
- Thread starter Thomas J.
- Start date
Gabler
Masterpiece
I use whatever brand is in stock. Just read the label to check the active ingredient and instructions for application.
bwaynef
Masterpiece
Bonide is what I have. Just follow the instructions. (I use it as a foliar spray.)
Apex37
Chumono
Thomas, I don’t have a copper fungicide recommendation, but I had an issue with needle cast on my JBP the first couple years I started. Based on other recommendations here, I found using Daconil in my fungicide rotation really helped. I use the concentrate, not the spray.
Yeah I use Daconil also on just about any of my trees that have a fungal issue but it doesn't seem to be working for pines at this point. :-(
Dav4
Drop Branch Murphy
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- 6a
I’d be applying a systemic granular antifungal as well. I have used clearys… I believe there is a similar product that can be purchased at one of the big box stores.
weetree3
Yamadori
I live in DFW too and have had good luck with Phyton 27 in rotation with any copper fungicide.
Follow directions closely.
Follow directions closely.
weetree3
Yamadori
BTW - Phyton 27 is Copper Sulphate Pentahydrate.
bwaynef
Masterpiece
Have you seen this post: https://www.bonsainut.com/threads/stop-needlecast-before-it-starts.33078/
Gr8tfuldad
Chumono
I get horrific powdery mildew. Bonide works great as long as I start before it does…
Yeah I saw that a few yrs ago and bought some of the granular stuff he mentions and use it in the spring and I sprinkled some about a week ago so I'll get some Bonide copper and see if I can get it under control.
Paradox
Marine Bonsologist
I use daconil and copper fungicide by Bonide.
In addition, I use Infuse granular systemic fungicide that is also made by Bonide
In addition, I use Infuse granular systemic fungicide that is also made by Bonide
River's Edge
Imperial Masterpiece
Three Possibles from my experience!
Daconil, Mancozeb and Bonide Infuse granular.
Best results, hands down the systemic " Infuse " granular.
Basically has eliminated the issue from my nursery for years with preventative use. Also effective initially to put a stop to needle cast. Other products helped but not the same control.
Daconil, Mancozeb and Bonide Infuse granular.
Best results, hands down the systemic " Infuse " granular.
Basically has eliminated the issue from my nursery for years with preventative use. Also effective initially to put a stop to needle cast. Other products helped but not the same control.
Japonicus
Imperial Masterpiece
"Silver Bullet"
I was under the impression that we can only stop needle cast in Spring and wait for infected needles to be replaced, or physically remove them.
I dont see anything wrong with attempting control now especially systemically, but from Adairs point, I don't think it's really going to help. Any disease pressure suppression seems ok if it doesn't affect naturally occurring fungi in the soil beyond recovery.
Copper fungicide is a commodity product. It’s just an aqueous solution of copper sulfate. AFAIK, if the concentration is identical, there is nothing special about any manufacturer’s formulation that would differentiate it from another’s.
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