Powdery mildew - An easily exterminated parasite

If you can’t see it then maybe it’s not there. Well we both know that it is. I will probably continue to use my spray. It does do well to keep mites out of my garden. Plus the plants do like it. It’s hard to break old habits but it did not do anything to prevent me from getting pm. Damn @JoeCrowe you always keep me thinking about things.

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I used this product forever mixed with talc and corn starch to prevent bugs and deer from eating my plants, especially when they’re small. Never had PM. Last year, growing in my backyard, I decided NOT to use it, and just keep an eye out for bugs. My first ever experience with PM.

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lol, I’m a mothafucka like that. Gotta keep the ol’ brain sharp!

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So you got powdery mildew this year?

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Last year.

This year I stuck with mold resistant strains and so far so good. I’m using BudBusterPro this year for the first time too, and any foliar is a no-no apparently.

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Ok so where did the mildew come from?

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The stuff I had last year? Don’t know…but I have a suspicion it came from the fucking lilacs that my wife loves that were covered in it.

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nope, it didn’t come from the lilacs. I would say it came from infested cannabis plant material, did anything like that come within 6 meters of your grow?

I have lilacs all around my plants and my plants are clean. Lilacs are drowning in pm

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Not that I know of. I’d never had it before until last year.

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I agree here. I have bought a lot of toy eerrr I mean tools this year and this buy far was the best thing I bought. Just some amazing things you can see and for me being a old man with bad eye sight a jewelers loop doesn’t cut it. I paid like $105.00 for mine on amazon 1200x scope & small tablet that came with it.

GR

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ok well the infestation method isn’t really important, but just remember it comes on infected plant material. You can easily wipe out the mildew on the lilacs, but know that those plants aren’t responsible for the infestation. I will tell you something that will perhaps shock most people. Hops, which are the cousin to cannabis can get infested with mildew, but that is not the same mildew on cannabis. The mildew is very host specific.

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An investment worth every penny! They were using those things up at the unicorn this year to look at weed heh heh. I could see the LCD screen across the way.

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@Gravitys-Rainbow I suffer from age as well. If you get a minute send a link. I want to get with program.

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I WAS wondering about that. Not any more. Thanks

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I think the one i got was hvscam but I cant find it on my orders page anymore. I searched it out and there are plethora of them on there and they all look and seem to work the same.

https://www.amazon.com/s?k=1200x+microscope&crid=2TZOKNDBJCPWI&sprefix=1200x+microscope%2Caps%2C72&ref=nb_sb_noss_1

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Thank you kindly

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Hay Joe, I’ve got a microscope question. I’ve got a school lab scope I got from the local university surplus. It’s got 4x lenses, 4/0.1, 10/0.25, 40/0.65, and 100/1.25. I don’t know what any of that means, lol!

When I looked at pm infested pot leaves w/ the 4/0.1, I could see what I assume is hyphae… white, wispy tentacles. The other lenses don’t give such a clear view, at least to me.

All your shots show black sort of spots in seas of green/yellow that look nothing like what I see.

No camera on mine so I can’t show… plus I don’t have any more pm to scope!

Anyway, I must be missing what you’re trying to show, can you explain that a little more?

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https://apsjournals.apsnet.org/doi/epdf/10.1094/PHP-04-21-0071-BR

The first is a report of Podosphaera macularis (hops PM) infection in hemp, the second is identification of Golovinomyces ambrosiae infection in hemp, which seems to infect a number of different plants. The hops PM strain has been used to artificially inoculate cannabis plants but has also been found in natural field settings infecting cannabis.

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So why don’t you get some hops with mildew on it and rub those leaves on some cannabis ones. Go nuts with it. If you look at the images of mildew on cannabis and the mildew on hops using a light microscope the differences are huge.

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