Systemic Fungicide for Palms

[WisTex]

Is there such a thing as a systemic fungicide for palms?

[D. Morrowii]

Banrot is one that I know of. Its expensive but very concentrated so the small bag should last for years. 
 

“Banrot 40 WP Fungicide Banrot 40 WP is a broad spectrum soil fungicide for the control of damping-off, root and stem rot diseases caused by Pythium, Phytophthora, Rhizoctonia, Fusarium, and Thielaviopsis. It may be used at time of seeding and transplanting as a drench to control the labeled pathogens in commercial greenhouses. Wettable powder formulation For use in commecial greenhouses only Application.”

[WisTex]

Thanks for the reply.  The Q&A on the DoMyOwn website has the following regarding Banrot:

Q

Can I use Banrot WP Fungicide if I might have sylvester palm bud rot?

A

Banrot WP Fungicide is labeled to treat both Phytophthora and Thielaviopsis bud rots in palms by bud drench, but it is only for use in commercial greenhouses. Whether treatment for your plants is possible will depend on the age of the plants and severity of the problem. This article from the University of Florida Extension has great information about these pathogens and treatment options.

Q

I'm having trunk rot at the base of my ornamental palms. Palms are planted in ground. Need rate of Banrot WP Fungicide
The intention is to treat the surrounding areas / ground of the palms. Can you say the dosage per gallon of water? Using a spray can to apply / drench. Possible to give the measurements in "spoons" (tea or table) would be most appreciative. Regards, Anand.

A

Banrot WP Fungicide is labeled to treat both Phytophthora and Thielaviopsis bud rots in palms by bud drench at the time of seeding and planting., but it is only for use in commercial greenhouses. Whether treatment for your plants is possible will depend on the age of the plants and severity of the problem. This article from the University of Florida Extension has great information about these pathogens and treatment options. The rate is for larger areas as well due to being for commerical use only.  Mix 6-12 oz. of Banrot® 40 WP with 100 gal. of water per 400 sq. ft. (equivalent to 1 quart/sq. ft. soil surface) or apply in sufficient volume to saturate the soil mixture, such as 1 ?2 pint per 6” pot

Q

What is correct mixing dilution rate of Banrot WP Fungicide in a hand sprayer when treating for coconut and pindo palms?

A

Coconut and Pindo Palms are not listed on the Banrot WP Fungicide label, therefore we are unable to advise on a mixing rate. We recommend contacting the manufacturer Everris at 1-800-492-8255 for further details on your treatment. 

Too bad it doesn't come in a smaller size or lower concentrate.  Appears they are missing a marketing opportunity.

Edited March 15, 2023 by WisTex

[D. Morrowii]

So what kind of fungus are you trying to cure or prevent? I’m not exactly sure if Banrot is really a systemic fungicide or not but It should work as a drench above ground or for soil/root treatment below. Someone posted about how to mix it here on PT awhile back and it basically came out to 1-2.5 tablespoons per 10 gallons of water. I usually just use 1 tablespoon per 5 gallons of water and apply 1 gallon to each of my smaller palms that I think may need it. If there is some left over I funnel it into a couple 1 gallon containers and label it for use later. I’m not sure if this is best practice so maybe someone with more experience can chime in. 

[WisTex]

North Padre Island has dense morning fog periods late fall and late winter.  I am wondering if systemic fungicide would be absorbed by a palm and act as a fungus prevention, including avoiding spear pulls after a freeze event.

[Merlyn]

I don't think that any fungicide will help avoid freeze damage.  If the cell actually freezing and rupturing during really cold temps.  That being said, most spear pulls are either caused by or accompanied by a Phytophthora bud rot, which is the stinky mess at the bottom of the spear when you pull it out.  So...theoretically a systemic would help reduce the growth of the bud rot bacteria.  I don't know if anyone has experimented with this.

For systemics, Banrot and Aliette (Aluminum tris) are good against Phytophthora bud rots.  For contact fungicides, Daconil, Hydrogen Peroxide, and Mancozeb are commonly recommended.

[3 Milesfrom Gulf of Mexico]

I second Daconil.  Have used before with great results. 

[Merlyn]

16 minutes ago, 3 Milesfrom Gulf of Mexico said:

I second Daconil.  Have used before with great results. 

I like 4tsp of Daconil mixed into 32oz of hydrogen peroxide.