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Post by lilolpeapicker on Mar 18, 2023 20:29:51 GMT -5
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Post by gardendmpls on Mar 19, 2023 1:32:49 GMT -5
Hmmmm. Plants make more oxygen than they can use. They are also surrounded by air, which has oxygen and is absorbed into soil. As long as the plants aren't flooded, they have plenty around their roots. I am always wary of all the "hacks" that claim that using household cleaners and disinfectants on plants is the greatest idea since sliced bread. I need to see the controlled experiments before dumping them on my plants (and also some sign that they are organic).
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Post by raphanus on Mar 19, 2023 9:06:47 GMT -5
gardendmpls , I’m always skeptical as well. I doubt we will ever see many controlled experiments on this topic as H2O2 is incredibly cheap and has been around a long time, so there isn’t much incentive for industry or academia to fund experiments on niche topics like this; I don’t think any commercial farmers will be using H2O2 on their fields any time soon 😂. The benefits are probably exaggerated, but there does in fact seem to be a history of using H2O2 as a weak disinfectant to mitigate some disease issues, such as powdery mildew as well as Pithium, particularly in potted plants. There are better treatment options for fungal diseases, but H2O2 is cheap, readily available, and organic approved. If a potted seedling is showing signs of root rot from overwatering or is developing some type of mildew on the leaves, it probably wouldn’t hurt to spray some 3% H2O2 on it. But the only similar practice I’ve seen at the commercial scale is using strong solutions of peroxide (>30%) as actual industrial disinfectants for cleaning indoor grow rooms and hydroponics systems after harvest before a new planting. The H2O2 they sell at Walmart is pretty weak, like 3% usually, is fairly safe, and probably has minimal effects on plants, but some of the industrial peroxide formulations are quite dangerous to work with and are probably best used for cleaning greenhouses and grow rooms rather than directly applying to plants. I do include regular old 3% H2O2 as a potential organic treatment option for powdery mildew when I get questions about how to deal with powdery, it isn’t the best treatment for powdery, but it helps some and is cheaper than copper or neem oil
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Post by lilolpeapicker on Mar 19, 2023 13:31:09 GMT -5
If I tried this it would be on houseplants and see how they would be affected by its use. Too much garden outside to bother with the time.
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Post by pepperhead212 on Mar 19, 2023 18:55:59 GMT -5
Here's one that will give you a laugh, listing food grade H2O2 as a remedy for countless things - asthma, arthritis, coronavirus, herpes, to list just a few in a row. www.earthclinic.com/mobile/remedies/food-grade-hydrogen-peroxide-cures.htmlHowever, it does have some uses in gardening, and actually does work in many cases, though for some it doesn't work as well as some other things. It is safe, and fairly inert (unless you are mixing from that 35% commercial stuff), and it is a good disinfectant. Good for soaking some seeds, and it's still incredibly cheap - the reason it's not pushed, like a lot of other commercial chemicals. I don't know how long ago it was, but I remember when they were pushing that "food grade" peroxide, telling us about all the chemicals added to the cheap stuff, but it didn't sell well, given the increased prices! In fact, they pulled some of those smaller containers of the 35% stuff off the market, after some injuries happened, due to people not being careful with them. The guy at the hydroponics store had to return a bunch of them. I don't know if they sell only 12% to the retail now, and that 35% only to commercial users, but it's still out there. I know there have always been other chemicals people can misuse, and they haven't taken taken them all off the shelves!
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Post by emmsmommy on Mar 20, 2023 17:38:07 GMT -5
I've sprayed the soil with a diluted H202 mixture at the first sign of mold on damp soil and it's taken care of the problem. Actually tried it on tomatoes to fight the blight last year and while it did seem to prolong the lives of the plants, I eventually gave it up as a lost cause.
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