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H2O2 algacide/fungicide
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Posted by Cyanea z11 HI (My Page) on Mon, Sep 12, 05 at 16:52
| I posted a question in the pests and diseases forum about a chemical called Zerotol. Someone had suggestted that I use H2O2 as a substitute for this chemical. I am posting in this forum because from what I know algae and fungi is most problematical when trying to propogate seeds or cuttings.
Has anyone had any experience with using hydrogen peroxide as a soil drench to prevent the growth of algae and fungi? I was going to experiment with this myself but perhaps someone here would have experience with this.
Mahalo,
MattG |
Follow-Up Postings:
RE: H2O2 algacide/fungicide
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| I use a sterilized soil & apply a fungicide to the seed or cuttings when they are placen in/on the soil. I do not keep either in a "tent" but depend on a misting system. This way I avoid the problem. |
RE: H2O2 algacide/fungicide
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- Posted by chaman U S east coast (My Page) on
Wed, Sep 14, 05 at 12:13
| I use 1% solution of H2O2 (Hydrogen peroxide) as insecticide on vegetable plants.It works fine. |
RE: H2O2 algacide/fungicide
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- Posted by Baci z10Ca (My Page) on
Fri, Sep 16, 05 at 7:15
| You can try it, but it might not be as effective in your climate. Growers with high sun intensity & heat tend to have more severe problems with algae. |
RE: H2O2 algacide/fungicide
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I seriously doubt that H2O2 would have any significant effect on algae or fungi. Folks may claim it, but that doesn't make it so.
We commonly use H2O2 as a 'disinfectant' on wounds because it reacts with the catalase enzyme present in mammalian red blood cells (and some bacterial species which also produce catalase), to release 02 gas, which is 'toxic' to anaerobic bacterial species, such as Clostridium tetani, the organism which causes tetanus, as well as the other clostridia which cause gangrene.
In all likelihood, it will do nothing to harm or impede algae or fungi. |
RE: H2O2 algacide/fungicide
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| When I took propagation classes about a half century ago we washed cuttings in common bleach. Some did 10-15 minutes in diluted bleach. I preferred to swish the cuttings for a several seconds in undiluted bleach and rinse immediately with pure water. |
RE: H2O2 algacide/fungicide
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| Typically, a 1 to 30 dilution of regular household bleach is sufficient to kill most bacteria, viruses, and fungi on surfaces. |
re: h2o2 algacide/fungicide does work
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| And yes it will in fact act as an oxidation agent to break down and oxidise algae, mold, fungi, and certain beneficial bacteria into nitrogen by products and increase the amount of oxygen available to the plant's roots. Hydrogen Peroxide comes in several different strengths. In the medical field, it is used as a topical disinfectant at lower percentages typically 3% or .03 percent. It can also be found in a much stronger 35% percent concentrations which I add is dangerous if not handled carefully. This is commonly used in the plant industry for the usage of killing soil and waterborn nasties that often cause root rot or pythium. The higher concentration products MUST always diluted to a safe workable level as is directed on the product in several different places. It will in fact do wonders for you when you need it. I have saved plants others have thrown out for dead simply because I found a root that was alive. If used appropriately,results are especially impressive for hydroponics,but works quite well if using a soil-less mediums. I occasionally use it mixed 5ml or a teaspoon full per gallon of water if I have a plant that needs special attention and it works. I have not used it in anyway as a misting agent directly on the plant itself but have read about it's use as an insect killer for soft bodied thingy's...once again it is a diluted form. |
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