Possible PM systemic symptoms?

[Norkali]

* Update: go to new post *
​

Alright, I've got the pictures to work, so here we go...

Nobody likes Powdery Mildew. We've either heard horror stories of mildew-laden rooms, or have had the unfortunate experience of battling this mysterious fungi ourselves. It also seems that we as a community, have not completely 'figured out' the problem that is PM. The Cali med scene has been tainted with this problem time and time again, often causing many headaches along the way; unfortunately, I know first hand.

Hopefully we can come to a consensus about a few things here. Here are a couple pictures showing the symptoms of, what I think, is a systemic powdery mildew infection. Thoughts? There are 3-4 leaves representing two different plants, a Blue Moonshine I believe, and a Grape Ape. This symptom starts out, as you can see, at the ends, edges, and tips of the fan leaves as basically, necrosis. Usually, only one or two fan leaves are effected at a time, and are always at the bottom of the plants. I usually snip off the effected leaves and leave just the healthy ones.

I'd hate to have to scrap all of my genetics because they've all been exposed, in close contact, with these plants...

*click to enlarge*

 

[PharmaCan]

I got the PM out of my plants by treating successive generations of clones both systemically and topically. One thing that seemed to really work was to treat the plants when they are small by dipping in a solution of Serenade (or whatever you want to use to kill the PM).

There's a real good thread here that discusses this subject in detail. I don't have a link but if you search "powdery mildew" in the title you should be able to find it.

PC

 

[Norkali]

Thanks Pharma, I dug back through some of those threads and will have to try the Zone/Penetrator dunks...

Unfortunately, Serenade SUCKED when I tried to use it to save a crop, barely slowed it down...

 

[L~B]

no pics post to your gallery and drag a link in

 

[Weedhound]

That's odd....I love Serenade but if you don't raise your lights after use it can fry your plants.......did that to me once.

what's your humidity? I've never really had powdery mildew (although I've had everything else) but make sure to run my rh in the 30's.

And sorry Norakali, maybe it's me but I can't get the photos to come through.

 

[jm420]

I cant see pics either love the new site

 

[Weezard]

Album?! He don' got to show you no steenking album!!

Album?! He don' got to show you no steenking album!!

I cant see pics either love the new site

Here ya go folks.



Click and enjoy.

Weezard

 

[Weezard]

Wrong pics?

Wrong pics?

Oops, sorry.
But those were the only unprotected pics.

Aloha, Norkali,
stick dem PM snaps in an album,
Den we can see 'em.

Weeze

 

[Norkali]

Lol, yeah Weezard! Those Chemdawg D's are almost ready too.......

Pictures are workin' now!

 

[Weezard]

Mo' betta!

Mo' betta!

Lol, yeah Weezard! Those Chemdawg D's are almost ready too.......

Pictures are workin' now!

Yup!



That does not look like PM to me.
What do you think, Weedy?

What kine water are you using?

Weeze

 

[Norkali]

/\ I'm using regular tap water, which is really good actually. To that I add my nutrients, and then adjust the pH accordingly. The moms, (what these leaves came off of) are fed a light solution of 1 tsp. FF Grow Big and 2-3 tsp. Liquid Karma to every gallon of water. They are also proactively sprayed with a foliar solution of SMC leaf wash and tap; they have been ever since I spotted some very small patches of the classic white PM 'fluff' on one of the clones that I had recently brought into the garden. I, now, always try to quarantine anything that will be arriving into the garden with both FF Don't Bug Me, and then SMC for a day or two.

Now, and after (if) I get these plants situated, I will be very cautious and suspect of any cut that I want to 'bring home'.

 

[Norkali]

That's odd....I love Serenade but if you don't raise your lights after use it can fry your plants.......did that to me once.

what's your humidity? I've never really had powdery mildew (although I've had everything else) but make sure to run my rh in the 30's.

And sorry Norakali, maybe it's me but I can't get the photos to come through.

Ugh, and you can stand the smell of that stuff too...? No thanks.

My humidity is always hovering between 40-55% on the actual humidity meter near the floor, and always between 0-30-35% on the digital one up in the closet.

Not you hound, :smile: I got my stuff in order now.

 

[Norkali]

Okay, so now these symptoms have spread to healthy plants. This Blue Dot was perfectly healthy when I brought it home, and it shared a dunk in Zone+Penetrator with other plants. Looks like I spread it that way; I think so at least.

I am lost as to what this is and how to fix it; SM-90? JMS Stylet-Oil? Quadris? pH, ambient temp, circulation, etc., EVERYTHING I can think of is taken care of; leaving me to think this is systemic PM. I really need some help from my fellow growers! I really don't wan't to lose these ladies to this shit.

 

[cocktail frank]

i had pm once.
i used green cure.
wiped it out after 2 applications.
i also noticed that low temps help the pm thrive.

 

[ElGato]

PM isnt systemic...and that isnt PM

if you get PM you will know it becuz there will be
whiteish/greyish fuzzy spots on your leaves, they start
out about the size of a dime and just get more and more of them

there is no mistaking it



mj

 

[Norkali]

If it isn't PM, does anybody have any ideas on what it could be?

 

[Norkali]

Bump. I'm thinking this may be potassium deficiency, but with the way it spread, that wouldn't make sense.

Going to feed with some Big Bloom added in, will see if that helps.

 

[Barnt]

This is PM:

I would recommend stop spraying your plants as the added moisture may cause PM. Also sometimes sprays will burn leaves making them look like you have. I have had serenade burn my plants before in weird patterns. This may be part of your problem but I am not sure.

Another thing to add, while it does not look like a Calcium/magnesium deficiency, I ALWAYS have to add calmag to my foxfarm nutes. I use tap water so there is some minerals in the water I give, however never enough.

 

[micropro]

best advice so far.

I dont see any PM in your pics at all. PM looks like powder on your leaves. I'm not sure what the rest of the plant looks like, but if it is large and healthy than this may just be the natural necrosis of older leaves. All the leaves in these pics look mature and/or from the bottom of the plant; this makes it hard because PM will usually surface on lower leaves in lower light areas. Also, the plant will naturally drop leaves that are not helping it produce. If there's nothing wrong with the top growth, then it's probably not a problem.

 

[Norkali]

Leaf blight. That's what this shit is, I think. Anybody fought with leaf blight and get rid of it?