From

Location

Message

Date Posted

Mission Viejo, CA

I read about a product online called Gard'nClean. It's Chlorine Dioxide based and kills several pathogens that plague our patches, including pythium and fusarium. Has anyone tried it? Any comments on using this product verses Hydrogen Peroxide?

https://gardnclean.com/

9/26/2022 5:20:33 PM

Mission Viejo, CA

Bump

3/19/2023 8:37:18 PM

New Castle, Indiana

At the spring meeting I attended in Indiana, we talked about something similar perhaps? Something called TerraClean, which is meant to essentially sterilize the soil of all microbes good and bad. Then another product called TerraGrow which is meant to help boost the regrowth of positive microbes in the soil. Is this kind of what you're looking at?

3/19/2023 10:24:20 PM

Elk County, PA

TerraClean uses Hydrogen Dioxide & Peroxyacetic Acid Blend. Just about done finishing my Masters, so I jumped on the library while I still have access and from what I can tell a few studies have been done using Chlorine Dioxide on finished product for storage with success. But Steve's example is correct and the only way for it be used.

"Chlorine dioxide is an oxidizing
agent. Its mechanism is to attack all
forms of organic matter (that is,
carbon-based material—as in ‘organic
chemistry’. Not ‘organic’ as in
‘pesticide free’ etc., produce).
An oxidizing agent is not selective as
to what it attacks and hence it will
destroy all organic matter such as dead
roots, bacteria, fungi and otherwise
healthy live roots. If the level of oxidizing
agent is made high enough to ensure a
kill of disease bacteria and fungi, it will
also be high enough to kill the plants in
the system."

No studies done that I can find for soil pathogens, but plenty on its removal of pollutants, or industrial soils, specifically PAHs. Lots of information regarding its effectiveness with important considerations like starting PH etc.

Now for something I didn't know.

"Fusarium wilt diseases react to nitrogen form and the effects are often indirect through a plant response and not a pathogen response. Research over the past 120 years consistently shows that managing nitrogen source and maintaining soil/medium pH are still the most effective means of reducing Fusarium wilt. When crops are fertilized with lower levels of nitrogen and when the nitrogen is derived from nitrate—not ammonium—sources, Fusarium wilt is diminished. Fusarium wilt was increased when phosphorous was high and potassium low."
and
"Additional experiments have shown that liming to increase pH to 6.5 to 7.5 can reduce severity of Fusarium wilt as well. Some studies suggest that when pH is higher, many minor elements are less

3/19/2023 11:58:50 PM

Elk County, PA

PH and Fusarium. Might be easier growing in Alkaline conditions? Fusarium is the scary one for sure.

https://www.researchgate.net/publication/304299531_Effect_of_different_pH_on_the_growth_and_sporulation_of_Fusarium_oxysporum_The_causal_organism_of_wilt_disease_of_Tomato

https://apsjournals.apsnet.org/doi/10.1094/PDIS-11-18-1952-RE

3/20/2023 12:47:10 AM

Torrance, Ca.

Great read Bravo!

And dead on and great post above!:) I've been learning about fusarium for many years and finally starting to get it.

7/2/2023 6:27:56 PM