F’ing PM.

Greencure is basically just potassium bicarbonate, and it works by changing the PH of the leaves as well...and I can tell you from experience I used it very late in flower once or twice and it didn't harm the buds taste or appearance at all...I saw plenty of horror stories from people who used too concentrated a spray though, so go easy on the stuff if you decide to try it out.

It definitely works though...I tried milk and a few other things, they kinda worked, but not like this stuff. I sprayed about once a week, and every week it came back less strong. a couple of grow cycles later it was completely gone for me, I haven't had to spray in several months now(I grow indoors, so hopefully it's gone for good for me)

Go for Regalia. I've used it on tables I can't lose and it gets me through flower to harvest and best of all it's OMRI certified

Download the small tank mix instructions from here:
You need to mix it double the recommended use rates because you have an active infection. I ordered mine off Amazon.

curious2garden said:

Go for Regalia. I've used it on tables I can't lose and it gets me through flower to harvest and best of all it's OMRI certified

Regalia® | Control Powdery Mildew | Pro Farm Group - Formerly Marrone Bio Innovations

Regalia® Bioungicide delivers improved crop yield and harvest quality by stimulating a plant’s ability to fight diseases. Effectively control Powdery mildew.

marronebio.com

Download the small tank mix instructions from here:

Small Tank Mix Instructions | Pro Farm Group - Formerly Marrone Bio Innovations

Download Small Tank Mix Instructions | Pro Farm Group - Formerly Marrone Bio Innovations.

marronebio.com

You need to mix it double the recommended use rates because you have an active infection. I ordered mine off Amazon.

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Didn't want to bother you. My bad. Thank you. I got some girls worth the fight. I have clones that are now PM free and re vegging. I'll get a second chance indoors. But I have 8-9 monsters I'm fighting with.

ganga gurl420 said:

Never heard of milk working because it raises the ph? I mean isn't it slightly on the acidic side?
I know that it does contain enzymes and anti fungal properties in it that help prevent pm but from what I used to read on it is that they don't know why it works ...it just does.

Alls I know is I'm a hard core believer in preventing the problem before you have one. I've learned to start earlier in spraying with bacterial fungicides , twice a week actually and I've not seen a drop of pm in a few yrs.

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This is what I thought as well, that it was the lacto bacillis (bacilli?) bacteria in the milk. Not sure what the mechanism behind it is, or if there really is any benefit or difference but heres a quick excerpt from royal queens site talking about it a little bit, it goes into a little theoretical bit on terpene production but until reading any of the studies, they seem kind of iffy...

I will say, humans think we know a bunch, and we do... But relatively we know nothing, and Im sure there are billions or trillions of combinations that would work for many ingredients and plants/fungi/bacteria.


Link
In theory, the addition of lactic acid bacteria to your organic grow will increase both the trichome and terpene production. This theory is backed up by real scientific research that you can read for yourself in the Plant Journal[1], and on the NCBI[2].

Here's the simple version. As they digest sugars, your LABs create a short-chain fatty acid called hexanoate as a byproduct. Cannabis plants synthesise hexanoate to produce terpenes and cannabinoids. By adding more hexanoate, you provide the building blocks for more terpenes, more cannabinoids and, theoretically, more THC.

Another study discusses how farmers of all types can use lacto b to boost plant growth[3] by making organic fertilisers more bioavailable, and prevent disease by suppressing multiple types of bad fungi and bacteria. This means bigger, healthier cannabis plants that yield more


Studies:

Priming of plant resistance by natural compounds. Hexanoic acid as a model

The hexanoyl-CoA precursor for cannabinoid biosynthesis is formed by an acyl-activating enzyme in Cannabis sativa trichomes

From yogurt to yield: Potential applications of lactic acid bacteria in plant production

dunphy said:

This is what I thought as well, that it was the lacto bacillis (bacilli?) bacteria in the milk, creating heres a quick excerpt from royal queens site talking about it a little bit, it goes into a little theoretical bit on terpene production but until reading any of the studies, they seem kind of iffy...

I will say, humans think we know a bunch, and we do... But relatively we know nothing, and Im sure there are billions or trillions of combinations that would work for many ingredients and plants/fungi/bacteria.


Link
In theory, the addition of lactic acid bacteria to your organic grow will increase both the trichome and terpene production. This theory is backed up by real scientific research that you can read for yourself in the Plant Journal[1], and on the NCBI[2].

Here's the simple version. As they digest sugars, your LABs create a short-chain fatty acid called hexanoate as a byproduct. Cannabis plants synthesise hexanoate to produce terpenes and cannabinoids. By adding more hexanoate, you provide the building blocks for more terpenes, more cannabinoids and, theoretically, more THC.

Another study discusses how farmers of all types can use lacto b to boost plant growth[3] by making organic fertilisers more bioavailable, and prevent disease by suppressing multiple types of bad fungi and bacteria. This means bigger, healthier cannabis plants that yield more

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Capitalism has promoted the research and progression of synthetic poisons. Not actual organic or natural workings of nature. Soil biology is still a mystery.

MICHI-CAN said:

Capitalism has promoted the research and progression of synthetic poisons. Not actual organic or natural workings of nature. Soil biology is still a mystery.

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Not sure I would go that far, Id argue a capitalist society would be better equipped to make future beneficial more conscientious products based on future discoveries... Vs... say a socialist society or any other for that matter....

Thats not to say there wont be those people who put profits ahead all else, but thats a problem with humans rather than capitalism IMHO... But thats a topic for another thread another day. Just pushing buttons of any socialist society idealizing kids these days ignorant to the world outside of their social media.

But definitely agree with soil biology still being a mystery.

dunphy said:

Not sure I would go that far, Id argue a capitalist society would be better equipped to make future beneficial more conscientious products based on future discoveries... Vs... say a socialist society or any other for that matter....

Thats not to say there wont be those people who put profits ahead all else, but thats a problem with humans rather than capitalism IMHO... But thats a topic for another thread another day. Just pushing buttons of any socialist society idealizing kids these days ignorant to the world outside of their social media.

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Same issues. Differing points of view. But we have very few truly safe and natural solutions for "PM" or anything else. Treating symptoms is more profitable than a cure. You gonna eat the cow or drink the milk kinda thing. Human nature. Waiting for change and ranting where we can is all us nobody's can do.

My attempts are knowledge to share. As yours. We the hobbyist will find the solution first by trial, error and discussions. Keep learning and educating.

You're truly a know it all when you realize you know nothing when put in context of scale. Peace.

I 100% agree with the "treating symptoms is more profitable than a cure" when it comes to big pharma and whatnot, but in this case I feel it's exactly the opposite...big companies would much rather shove expensive cures down our throats that would definitely get rid of PM for good, but they would be harsh chemicals no one in their right mind would then want to ingest in any way shape or form. It's the inexpensive treatments people have experimented and found that work and don't then make you sick and die from some kind of chemical poisoning later. Yeah, they might not get rid of PM for good, and you might have to spray weekly, but you can actually use the fruits of your labor afterwards and not worry about it.

Locke42 said:

I 100% agree with the "treating symptoms is more profitable than a cure" when it comes to big pharma and whatnot, but in this case I feel it's exactly the opposite...big companies would much rather shove expensive cures down our throats that would definitely get rid of PM for good, but they would be harsh chemicals no one in their right mind would then want to ingest in any way shape or form. It's the inexpensive treatments people have experimented and found that work and don't then make you sick and die from some kind of chemical poisoning later. Yeah, they might not get rid of PM for good, and you might have to spray weekly, but you can actually use the fruits of your labor afterwards and not worry about it.

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In an attempt to stay on subject. Why do most plants never develop PM? What is the natural process or compounds at work in their biology? It is right in front of the world since before fire. No intent to cure. 1 time purchase. No profit. Maybe petro owned fert companies?

I just want what my other plants use for PM.

MICHI-CAN said:

In an attempt to stay on subject. Why do most plants never develop PM? What is the natural process or compounds at work in their biology? It is right in front of the world since before fire. No intent to cure. 1 time purchase. No profit. Maybe petro owned fert companies?

I just want what my other plants use for PM.

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A theory Ive heard thats made sense was cannabis does have PM resistant strains, but because we've been selectively breeding for yield and potency vs. mold resistance, the market is filled with PM susceptible strains albeit ones that are big yielding/ high thc strains but... harder to grow than what had evolved naturally (which seems reasonable compared to native species that arent farmed at all in the world and have built up natural resistance)

I think as technology evolves a little more, there will be better records of genetics in all species, but starting with our favorites (cannabis being one of those) and as we learn more, we'll be able to select genes that will protect against disease while still providing the yield and potency we've become accustomed to. Its exciting to think what the future holds, scary at the same time when we start talking about eugentics and shit but... interesting nonetheless. Off to play in the garden, Cheers

Renfro said:

Eagle 20? You do know that when combusted it creates a cyanide byproduct? It's not something you wanna be smoking.

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lol no not eagle 20 just the basic fungicide & need oil from Home Depot. The ones I use are for fruits and veggies.

dried milk residue will turn into a fungus itself if you don't wash it off after.

MICHI-CAN said:

Where did you source this? Everything I have read in the past 3 weeks states science has no idea how milk works on PM. Only theories like free radical release when oxidized under UV or IR from sun. And baking soda lowers PH to seven killing the PM. Trying to keep things factual. PM and flower are serious. Thanks.

PS. Why is it no one mentions defoliation and removal of debris to minimize spore concentrations to slow spreading? Or the fact that PM can't live above 90F.

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I defoliated some leaves while they were still wet. Plucking leaves with PM will release spores spreading it on the plant.
I’ve seen milk work very effectively on cucumber and pumpkin leaves. So I gave it a shot on my plants. The PM was very minimal and it seems to have knocked it back.

Renfro said:

Potassium Silicate would be another means of raising the leaf pH, probably more effective than milk.

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Is this anything like potassium bicarbonate? I think that using milk is supposed to be something like EM1 or LABS. Anyways, I've been using potassium bicarbonate with pretty good results. I tried EM1 first and it didn't do much...

MustangStudFarm said:

Is this anything like potassium bicarbonate? I think that using milk is supposed to be something like EM1 or LABS. Anyways, I've been using potassium bicarbonate with pretty good results. I tried EM1 first and it didn't do much...

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Be careful with em1 and other like products. Hideously acidic. You want your leaf surface ph to be high not low.

ganga gurl420 said:

Be careful with em1 and other like products. Hideously acidic. You want your leaf surface ph to be high not low.

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High and low ph both work you just don't want it to be neutral. Products like procidic and dr. zymes work well against pm and they both have a very low ph because of the added citric acid.

dubekoms said:

High and low ph both work you just don't want it to be neutral. Products like procidic and dr. zymes work well against pm and they both have a very low ph because of the added citric acid.

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Anything I've read said that bacteria and fungus needs and acidic environment to thrive... never read that if it's super low ph it wont live. I will have to look that up.

Green cure and potassium bicarbonate suck imo. They always end up burning the shit out of the pistils even if I use 1/2 tsp per gallon. Might be because of the strains I grow.

ganga gurl420 said:

Anything I've read said that bacteria and fungus needs and acidic environment to thrive... never read that if it's super low ph it wont live. I will have to look that up.

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I know sulphur works really well against pm and sulphur has a low ph. I think plant leaves are naturally slightly acidic which is a great environment for mold and shit but if you move the ph into either a very acidic or a very basic range it makes it hard for mildew to grow.

dubekoms said:

I know sulphur works really well against pm and sulphur has a low ph. I think plant leaves are naturally slightly acidic which is a great environment for mold and shit but if you move the ph into either a very acidic or a very basic range it makes it hard for mildew to grow.

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Well I had to look this up because It contradicted much of what I had read but it also depends on the strain of bacteria.
So when it comes to botrytis... it attacks crops and fruit easily being at a very low ph of even 2 and 3.
Other bacteria will not live in that low of environments but I only really care about the bacteria that will harm my plants.
I think botrytis can attack tho no matter what you do so I guess it really doesn't matter hahah