Rusty-colored leaves: Deficiency or Fungi??

[krug]

I am not nearly as qualified as A4 or Waira but, that 2nd pic down does look the result of fungas/mold spores (it reminds me of botrytis, but affecting the leaves only atm!). It`s very strange, not seen it affect just the leaves b4.

I`ve bunged this up, cos the leaf/leaves (in the middle of pic) look similar(if slightly more advanced stage). I hope it is a def, I really do! Sending a `fluck you fungal/mold` . Hope the chaps come up with something for you TT.

 

[TimeTraveler]

Well, today was a soil feeding with the bone meal worked into the soil, and RO water with some molasses added. I'll see how it looks tomorrow, probably whip up a weak hydrogen peroxide and try that, maybe a baking soda wash the day after and see if either of those manage to curb it.

@A4 the second link in my signature is the grow journal for this particular grow.

 

[Waira]

... TT- ...the wipe test is not a good measure for fungal infections; many run deeper in the tissues, unlike white powdery mildew, sooty mildew, some rusts and blights,... bacterial isn't out either,... I know mate, sorry! Maybe one other person I can try to reach,... meantime, for the one not so far into budding, Neem might be worth a try,.. the peroxide foliar too, but I'm not sure how much to dilute the standard first aid grade stuff (3%),... let's look around on that,... Is this soil a custom blend you made? .... might be you had nute's defc.'s going at the same time,... such stresses do compromise the plant's defenses,... We'll keep watching mate, and fingers crossed!

 

[TimeTraveler]

Well, after the soil feeding I think some of the rust coloration disappeared, but I'm willing to concede that could just be wishful thinking making me see what I want to see.

Either way, I applied a foliar spray of 3% hydrogen peroxide and am letting it get some air and proper sunshine today outside the box. After it dries, I might do a baking soda spray as well; I'm hesitant to do it because I don't want the sodium to throw off my pH or kill beneficial bacteria in the soil. I'll keep you guys posted, and any additional feedback or advice is welcome.

 

[TimeTraveler]

In the interest of comparing and keeping up on progress, here's a pic of one of the leaves from yesterday and how it looks today after a foliar spray. I'll keep comparing and contrasting this leaf's progress until it either dies or gets healthy, so we can see the difference clearly. It's the only spot on the plant so far I can definitively tell is the same location as one of the original shots.

 

[Waira]

TT- .. something I forgot to ask for earlier-- a pic of the undersides of a leaf, like the one above,... this is what has A4 and me stumped... it looks like a rusty water surface stain, but we know it's not- literally,.... see what I mean? ..there's good green under some of the lighter areas, and if it was a bacterial/fungal infection, it shouldn't have that; if it was, a leaf this hammered would be worse off today for sure.... I too think the less stained areas look a bit better, at least in these pics... the camera/lighting can play tricks! .... More relevant is the lack of progression, even no further significant yellowing,... some surface stains can also really bind to the cuticle layer on the surface, so it won't rub off even though it's a very shallow penetration,... spot test the baking soda treatment on a couple leaves first bro', before dosing the whole plant with all that alkaline salty stuff (Na is not a plant's friend! -very small amounts are okay, but Na gets toxic fast, more so in soil vs. leaves of course!),...

 

[TimeTraveler]

@Waira @A4 here's a photo of the underside of said leaf from earlier:

It neither feels dry and crispy, nor wet and slimy. Aside from the discoloration, it feels (and SMELLS, mmm!) wonderfully healthy.

I must admit I'm quite baffled, and your remarks haven't helped. I'm worried about the health of my plants, but the rich stink of weed rolling off them and the ever-increasing sparkle of trichomes just makes it more confusing; in spite of the widespread discoloration, it seems to be THRIVING. The Sugar Black Rose's colas are getting fat and frosty and smell divine, and the Massive Midget is fattening up nicely just from a couple days ago.

 

[Papa Munch]

Hey TT. I had this exact same thing with my last grow and I have been stumped with what it is(was).

It may be Rust Fungus. The only thing that didn't fit for me was that they say the main cause is that night time temps are too cold with a high humidity. I don't have high Humidity but if this is your situation, it may be Rust Fungus.

I'll def. be watching this thread. Good Luck and hopefully you can find out what's going on.

 

[TimeTraveler]

Good ol' powdered toast man!

Humidity is never very high in the box, and temps haven't gotten that low at all, or that high really. It's been holding steady between 72-80 inside my home, and the box has held steady at about 80 degrees or close to it.

Like I said, very confusing. It doesn't help that the experienced growers are dropping in, looking it over, and responding with "fucked if I know...keep us posted". More than anything, I'm just curious...what the hell IS this?

 

[Renaissance Redneck]

spot test the baking soda treatment on a couple leaves first bro', before dosing the whole plant with all that alkaline salty stuff (Na is not a plant's friend! -very small amounts are okay, but Na gets toxic fast

True that!

I must admit I'm quite baffled, and your remarks haven't helped. I'm worried about the health of my plants, but the rich stink of weed rolling off them and the ever-increasing sparkle of trichomes just makes it more confusing

It looks nothing like any rust I've ever seen, Traveler.... I've rummaged through a lot of my old notes, and the only thing this comes close to is a leaf blotch problem we had on some witch hazel once.


We'll keep plugging away