Magnesium or Zinc Deficiency?

[madsanchez82]

Hey Everyone,

Been lurking and reading the site for awhile and am having trouble determining the problem starting with a few leaves on my mother plant.

I guess as background, the plant is 2 weeks into a flowering cycle. In a coco based soil, using standard A + B nutes with Cal-Mag. Sits about 3 feet below a 1000w hps (room to grow) in a room kept on average between 60-78 degrees.

I started to notice on only a few leaves on the top of the plant a strange discoloration and abnormality with the leaves themselves. It's only this single branch which is showing signs of this problem, but before things persist I would like to nip it in the bud.

I am leaning towards a Zinc deficiency since all the nutes I use do have Magnesium in them, but you never know and would rather that someone with experience could lend a hand.

I've attached two photos, a close up and a shot of the branch with the problem.

Thanks!

 

[hazy]

Neither.


Weird. I'd be real interested to know what strain that is. Looks kind of what some people around here call TMV.

 

[jyme]

is that just the top leafs that are doing that?im with hazy onthis one thats wierd looking.it could be iron,but i honestly dont know???? what does TMV stand for hazy?

 

[madsanchez82]

Hazy,

I was hesitant to mention the strain... but I was told it was Cannalope Haze. I saw on another thread on this board about the controversy surrounding that particular strain (after getting the plant) so I chalked it up to a mislabeled plant.

I have a clone of this plant in veg right now and it's showing nothing at all similar to what this one is, in comparison the clone is 100% healthy, besides a small thripe issue I whipped out last week.

Is TMV an issue? I was under the impression that TMV affected plants under the Solanaceae family.

Regardless of what they're calling it on the board, any solutions or other effects to the plant from it that others may have noticed??

Jyme,
It's just that single leaf (on the top) and two which are sprouting from the same bunch. but it's not the entire leaf itself, just about half of the offshoots( not sure what to call those leaf "fingers"). I might try and up the Cal-Mag incase it is just a nute deficiency.

TMV=Tobacco Mosaic Virus


Thanks to you both for the input, gives me some different avenues to pursue.

 

[hazy]

If you do a search on TMV you'll find threads where people think that their ChemD has Tobacco Mosaic Virus. They have that half leaf yellow and bent thing going like yours does. But I hadn't heard of it in other than chemD and related varieties. Till someone in a legal med state like CA takes a sample into a lab for testing, we'll never really know. Their are a lot of different Mosaic Virus strains. Including Hemp Mosaic Virus. It's very common in beans and cucumbers tomatoes etc.

There's a good chance that it's just a strange representation of a deficiency or deficiencies and will grow out of it.

 

[isit4.20yet]

Picture 1 is a zinc deficiencies in vegetative growth.

Seems like zinc to me. How's your runoff pH?

 

[freeride high]

the cannalope has been a hungry girl for me, anything under 700ppm and i show nitrogren defs in veg even on the smallest plants. that plant is big and without cal-mag i figure it would show some odd deficiency pretty quickly. let it gro bro!
wheres your grow log?

 

[hazy]

Hey sanchez, what makes you think that having magnesium in your nutes would give you a zinc def?
My guess is it will grow out of this anomaly.

I'd be checking to make sure my pH was not too high.

 

[B.C.]

hmm...

hmm...

I'm with Hazy on this one, looks like what they've been calling TMV. The verigation (sp?) is way too pronounced to be a deficiency. Plus it's not all over all the top of the plant, like a def would be.

I've never heard of it being on the glass slipper though, but then agian, ( if I'm not mistaken? ) there were several other strains in that thread about TMV that weren't ChemD that also seem ta have it as well.

If the rest of the plant is healthy, I don't think I'd do anything different. No need ta cause an imballance in the nutes if there isn't one already.

Please keep us posted on this so we all may learn somethin. Good luck! BC

 

[dgkish]

yep im pretty sure that Tobacco Mosaic Virus... just because the half green half yellow leaf thing...goodl uck with that!!! TMV is a killer

 

[madsanchez82]

Sorry for the delay in updates, dont have internet at home so have to be stealthy at work...

Run off has been a pretty consistent 5.8-6.0

Hazy, It wasnt that I figured Mag would cause a Zinc deficiency, was just using the sticky guide here to try and rule that out, (if it's not Mag... then what else... Zinc seemed to fit the bill, temporarily) I should have been more clear I guess.

I have been pushing through and clipped the few leaves showing the abnormality about a week and a half ago and none of the new growth has shown any signs of the same TMV like symptoms.

I'll try and post some photos shortly, going to do a grow journal as soon as I get internet hookup at my place.

Just such a weird abnormality for the leaf, seemed like the top enamel had been worn off the leaf, and other than that it was still healthy, very green, just no waxy surface. Underneath it was like nothing was going wrong.

I've been tracking the new growth pretty regularly looking for other breakouts of this but havent seen any.

Possible that it was caused by being root bound? I repotted pretty shortly after finding the odd leaves since and havent had the same issue yet. It needed the larger pot, when I pulled it from the old one there was no soil, was like pulling a white slip out of the old container. Roots had formed entirely in the container pushing out nearly all the coco. Shouldve taken a photo, it was gnarly.

 

[hazy]

I never meant to imply that it was in fact TMV, just that it looked sort of the way some folks so-called tmv symptoms look like. I'm sure it's not tmv, and that it's just a weird thing that will pass.

 

[cyberwax]

ph fuckup?

 

[madsanchez82]

Hazy, I agree, it most likely is not TMV, appreciate your help working through that though. The sheer thought of it made me think twice, glad I waited it out.

cyberwax, not sure, pH has been something I've been pretty careful to watch. I am just going to chalk it up to a weird abnormality and hope it wont resurface.