Powdery Mildew

[motherlode]

so a place i'd like to vend to tests for pathogenic molds along with thc, cbd, and cbn quantities. i guess that is what i am trying to determine is if PM shows up in this capacity. i'd assume PM dies when the plant is dried?

Pm never dies bro - you can compost the plant and the spores are still viable

 

[1971]

well, doesn't that seem counter intuitive to using products to eradicate it on the plant? i get PM is in the air and what not. i do know that the composting issue is if you took infected leaves off a plant and then threw them in your compost pile.

 

[motherlode]

not sure what your question is mang - just saying to assume it dies when the plant dies is not correct

if you have PM on your buds when you harvest them there will be PM on them when they are tested

 

[1971]

no, i meant if you sprayed with oxidate, you'd kill it. so i'm then wondering how it shows up on pathogenic mold tests. as dead? not at all? that is what i meant. it would be clear that if it wasn't dead on a plant when harvested, it wouldn't die with drying

 

[dorjewright]

When I manicured the green crack it was so pungent, gave me the sneezes and sniffles. Not so with the white widow, treated the same way. And the ww is a smooth smoke. Maybe its just a characteristic of green crack to be harsh?

 

[Capulator]

Excel lg sucks for pm. It does not get rid of it permanently and can make yoru buds taste sub par. Read the label.

Downey mold is not pm. Nowhere on the label does it say it will cure pm.

 

[Capulator]

spray all your veg plants that are going in for next round with eagle 20, or Bannermax. Alternate between the 2 so you dont get super PM.

Your pm prolems will be gone. I had that shit 2 crops in a row. I tried everything. This methid works. Dont forget a high quality respirator. MIx some Forbid 4F in there too, since its summer now. ONLY IN VEG RIGHT BEFORE TRANSFER>

 

[1971]

so basically nothing really works all that great for PM... great

 

[moodster]

yes m8 eagle 20ew works in veg never see PM again:banana1sv6:

 

[Seamaiden]

Sorry moodster, you will (eventually) see PM again, even using Eagle 20. It's known to create resistance.

so basically nothing really works all that great for PM... great

You see my thread on apple farmers having problems with fungi resistant to the treatments of preference? They're going backwards. Hold on... lemme find it, link it.

Here we go:

 

[motherlode]

Sorry moodster, you will (eventually) see PM again, even using Eagle 20. It's known to create resistance.

You see my thread on apple farmers having problems with fungi resistant to the treatments of preference? They're going backwards. Hold on... lemme find it, link it.

Here we go:

\

sorry I have to say thats bullshit - I used to have PM - eagle 20'd some cuts I needed to keep and cleaned HOUSE

been over 2 years now

IMO most people dont tear down the room and clean their gear thoroughly enough - including tossing all the fans, filters and shit that can be replaced cheaply but can hide spores - stuff like power strips and shit

 

[Seamaiden]

Motherlode, you may feel it's bullshit, but if you avail yourself of the science that's readily available, you'll change your tune. It may have worked for you at that time, but that doesn't discount the science. Me? I'll be trying/using other methods.

Read the articles I've posted.

 

[moodster]

yes i havent seen any for a while and i had it real bad

 

[motherlode]

so if I read the articles Im gonna get PM again?

I know a few other people who treated their shit as I did and its been longer for them without PM

hell I dont even use my sulfur burner anymore either

Im sure If I did get PM at this point its gonna be a brand new infestation - not a re-occurrence of my old one

 

[Seamaiden]

Oh come on, motherlode. :giggle You're misreading what I'm trying to convey here.

 

[motherlode]

not misreading - you said because we used eagle 20 the PM is going to come back

Im pretty sure it would have by now - gone through 2 winters since I eradicated that shit

 

[Seamaiden]

not misreading - you said because we used eagle 20 the PM is going to come back

Im pretty sure it would have by now - gone through 2 winters since I eradicated that shit

Actually, what I'm saying is because all of these products are overused, not just by cannabis growers, but by farmers, homeowners, landscapers, garden and greenskeepers, we're going to see more and more resistant fungi, including, but not limited to powdery mildew in all its wonderful forms. And because all of these products are overused fungi of many types/species are developing new avenues of resistance, new mechanisms if you will. And when, not if, you experience exposure to one of those, then what?

Read the articles I posted.

**Edit** Add in the fact, specifically for us cannabis growers, the fact that no one ever breeds cannabis for disease resistance, and we've got us a problem.

This excerpt can help illustrate one of the issues we face, and I can dig up the other articles that specifically discuss resistance to single site mode antifungals like Eagle 20 if you like.

"One particularly ingenious attacker, powdery mildew, can even reprogram cells in such a way that they adapt their architecture and metabolism to accommodate the fungus. The plant thus actively fosters the in-growth of the harmful mildew and even supplies it with nutrients," explains Prof. Ralph Hückelhoven from the TUM Chair of Phytopathology. How the mildew manages this manipulation and which plant components are involved in the process is still largely shrouded in mystery.

Hückelhoven's team of researchers has now succeeded in unraveling a part of the mystery. With the support of colleagues from Gatersleben, Gießen and Erlangen, the Weihenstephan scientists identified two proteins in barley that powdery mildew takes advantage of during its "hostile takeover" of living plant cells. Together, the two protein substances steer development processes in the plant cell. In barley, for instance, they are responsible for the growth of root hairs. The one protein, called RACB, is a molecular switch, which reacts to signals from outside to initiate a structural and metabolic response in the plant cells. In particular, it is involved in enlarging the plant cell surface during the growth process. The other protein, called MAGAP1, serves as its counterpart and can prevent or locally limit these activities in the cell.


The researchers observed just how the RACB protein supported the fungus during plant in-growth. A basic function of the protein, increasing the surface of the plant cell membranes, provides a gateway for attack: RACB fosters the increase in cell surface while the mildew is invading, thereby leaving the plant cell intact while still supporting the fungus. Hückelhoven's team was able to demonstrate that the plant becomes less susceptible to powdery mildew when the protein is missing. Hückelhoven explains: "That is how the fungus benefits from this barley protein. RACB makes it easier for powdery mildew to push its haustoria, or feeding organs, into the attacked cell, to then take control of the barley cell." The scientists suspect that the fungus manages to take control of the plant's signal chain from outside -- remotely, so to speak -- to open the door to the plant's nutrients.

 

[motherlode]

no thanks

I am fully aware about how resistance to pesticides, antibiotics and the like works

 

[Seamaiden]

But you're not concerned at all? You don't think there's a chance at all that you'll encounter a resistant organism sometime in the future?

 

[Organicyumyum]

why doesn't anyone ever talk about the benefits of compost teas? Foliar spray weekly with a good compost tea high in microbes and you will never see P.M. again as long as your temps/humidity are correct. Compost teas make your plants much stronger so they can ward off disease and pests. if you want to learn more, google biofilm.