Affordable fungicide to treat Phytophthora?

[Missi]

Is there an affordable or readily available fungicide to treat Phytophthora? Per the PDF linked below, all of the mentioned products cost $100-$200+ (Banrot, Aliette, Subdue). I would love to have Banrot but it seems it runs about $95 on Amazon (the quickest way for me to get it). I don't have a whole dang nursery to treat, just collection palms! What do collectors use to successfully treat Phytophthora/crown rot? I see many use Daconil but I do not see it labelled for Phytophthora in my quick research. Please correct me if I'm wrong, however.

UFL|IFAS BUD ROT OF PALM

Edited May 23, 2023 by Missi
Forgot to add link

[Palmarum]

Just now, Missi said:

Is there an affordable or readily available fungicide to treat Phytophthora? Per the PDF linked below, all of the mentioned products cost $100-$200+ (Banrot, Aliette, Subdue). I would love to have Banrot but it seems it runs about $95 on Amazon (the quickest way for me to get it). I don't have a whole dang nursery to treat, just collection palms! What do collectors use to successfully treat Phytophthora/crown rot? I see many use Daconil but I do not see it labelled for Phytophthora in my quick research. Please correct me if I'm wrong, however.

Banrot is pricey, but it does work very well and you only need a tiny bit for a gallon of mix for a series of drenches. A one-pound bag goes a long way. Store it dry and out of sunlight and it will last a while.

Ryan

[Missi]

Just now, Palmarum said:

Banrot is pricey, but it does work very well and you only need a tiny bit for a gallon of mix for a series of drenches. A one-pound bag goes a long way. Store it dry and out of sunlight and it will last a while.

Ryan

Thanks Ryan!! I wish I could find a one pound bag available. I can only find two pound bags.

[Palmarum]

Just now, Missi said:

Thanks Ryan!! I wish I could find a one pound bag available. I can only find two pound bags.

A two pound bag for that price sounds like a good deal. It is a super fine powder so gloves and a mask are useful when mixing. I use a quarter-teaspoon (about 1 milliliter or 1.5 gram) for a gallon of water. Warm water works a tad faster. Apply with a watering can or a sprayer. Day two, irrigate like normal as there is always some residue from the first application that can be then re-applied. Day three, treat again. Day four, irrigate, and so on. Keep the cycle up until you run out of the initial gallon mix. Look out for any other plant that might need it. Do not apply when it is extremely hot.

Also, don't mix it in windy, breezy conditions, or in the midst of any air movement... I found that out the hard way.

Ryan

[Merlyn]

I bought a 2lb bag of Banrot for about $80 shipped back in 2018...it'll probably be a lifetime supply for me!  I also bought a 5lb bag of Aliette WDG (fosetyl-al) from Keystone Pest solutions.  The wettable powders are nice because they tend to not degrade as long as you keep them in a cool, dark place.  I keep mine in a metal cabinet in the garage, which isn't exactly "cool" but isn't up in the 120+ range.

[Barry]

Hi Missy,

As Merlyn said above, I bought a 2 lb bag of Banrot a few years ago, lifetime supply. I have barely used it, so I am willing to give you some to use. I see you are in Naples, I work in Naples, so maybe I could meet you somewhere and give you a bag of it? Message me if you are interested.

 

[Steve in Florida]

There's a company in Georgia that sells Banrot for $48, plus shipping.  Contact me privately if you would like their website.

[Missi]

On 5/23/2023 at 6:50 PM, Merlyn said:

I bought a 2lb bag of Banrot for about $80 shipped back in 2018...it'll probably be a lifetime supply for me!  I also bought a 5lb bag of Aliette WDG (fosetyl-al) from Keystone Pest solutions.  The wettable powders are nice because they tend to not degrade as long as you keep them in a cool, dark place.  I keep mine in a metal cabinet in the garage, which isn't exactly "cool" but isn't up in the 120+ range.

And still you use Daconil for the crown rot? On my single income right now, I couldn’t justify spending $100 on the Banrot. Hoping the H2O2 and Daconil does the trick.

[Merlyn]

2 hours ago, Missi said:

And still you use Daconil for the crown rot? On my single income right now, I couldn’t justify spending $100 on the Banrot. Hoping the H2O2 and Daconil does the trick.

Yes, though I can't guarantee that adding Daconil actually improves the "cure rate" over just using hydrogen peroxide.  I had pretty good success with just H2O2, but I *think* that I have had better success with the combo.  The advantage of Daconil or Mancozeb is that you can use them repeatedly.  Copper based solutions can be toxic to plants if you use them too often.

[Missi]

On 5/25/2023 at 9:33 AM, Merlyn said:

Yes, though I can't guarantee that adding Daconil actually improves the "cure rate" over just using hydrogen peroxide.  I had pretty good success with just H2O2, but I *think* that I have had better success with the combo.  The advantage of Daconil or Mancozeb is that you can use them repeatedly.  Copper based solutions can be toxic to plants if you use them too often.

I didn't know copper based solutions can be toxic to plants when used too often. How often do you treat with the H2O2 and the Daconil? I have given it two treatments of both. It's kind of just sitting there not putting out any apparent growth, but then again it's a Licuala after all!! ⏰ Another thing I'm keeping in mind is that it might be working on roots since I repotted it last week so I may not see any new leaf growth (good or bad) in some time...which is giving me ANXIETY! I want to know....is it going to make it or not?!!

Anything I can observe on a s l o w growing palm to indicate whether is is getting better or worse regarding bud rot? ETA: other than new growth, of course.