What are these streaks going up my stem?

[twodogplant]

The mother plants are in coco coir, and this streaking seems to show up as the plants get older, not right away. The stems otherwise don't show signs of issues, they just seem to look a bit woody as they get older and get more streaks on them.

One of the more delicate strains seems to be having a harder time, which is what made me curious about this streaking. She even has some minor wilting going on but I've up to this point rationalized that as just being underfed (nute levels low to avoid overnuting the younger mothers in the room) and over watered (the coco doesn't dry out in her as much as the other mothers) in addition to her lanky stem growth (which has been common for this strain for me forever but I've started supplementing with silica to try to help). I hope it's nothing but I'm starting to get worried. If I need to use a fungicide and/or a supplement like great white I want to do it sooner than later.

The mothers already get a lot of mycorhizzae and beneficial bacteria so I thought I was being proactive against things like this but it's possible I completely overlooked this at my own peril.

Anyone who's seen anything like this or can confirm whether or not the streaking part is normal would be immensely helpful.

The last picture is a microscope of a healthy part of the stem further up. The first microscope picture is one of the streaks visible in the normal zoom picture before it.

 

[twodogplant]

I should also note the temps in this room are 76-82 and the humidity barely goes above 25%.

 

[twodogplant]

Is it possible the stems are just cracking from the humidity being so low and dry and it's opening the plant up to fungus that can make it's way up the microscopic cracking?

 

[windycitysmoker]

Normal mine looked like a water melon /twissler lol

 

[Pl4nk]

Try testing some of your run off.
I Dont coco dry out at all once my roots are fully developed in the container, it causes more problems. The dryer the coco is the more salts and igher concentraded nutes, but thats just IMO.could be your humidity too, good look sir

 

[I wood]

Normal, kind of like bark on a tree.
The outermost layer is no longer alive, yet it has to give somehow to allow the expanding inner layers to grow.

 

[twodogplant]

What about this shot of the main stem?

What about this shot of the main stem?

It seems like there's a yellowing there. Could that be from her not receiving enough nutrients? An entire branch is wilting away but the other's seem OK.

 

[twodogplant]

More of the plant that has signs of verticillium wilt

More of the plant that has signs of verticillium wilt

What about these pictures on the rest of the plant? This strain normally has a little bit of the leaf turning since I've known it but the yellowing around the leaf edges is new to me. I've been hoping it's just because this mother is older and has been receiving less nutes than she needs compared to the other younger mothers but if it's verticillium wilt I need to know ASAP right?

Please help?

 

[Pl4nk]

I think your plants have ebola

 

[Mystic Funk]

What about these pictures on the rest of the plant? This strain normally has a little bit of the leaf turning since I've known it but the yellowing around the leaf edges is new to me. I've been hoping it's just because this mother is older and has been receiving less nutes than she needs compared to the other younger mothers but if it's verticillium wilt I need to know ASAP right?

Please help?

looks to me like their iron/magnesium deficient
that is common in coco grows.

adjust ph to 6.3 to 6.5 and feed them some cal/mag with iron.

good luck

 

[Granger2]

Looks like normal transition from green stems to more bark like [strengthening] stems. Relax. -granger

 

[Bubbamaniac]

Are any plants "duds" small buds no trichs, smells like hay?

 

[twodogplant]

what ? you mean you are psychic and knew a totally random person was going to come into a thread, about some guy asking about normal stems, with the title "what are these streaks..." prior to posting random pictures of plant abuse ?.

that mistake ?

The twine was something I've regularly done with that strain because the stems don't grow as thick as others and it's just there to keep it from getting knocked over, which has happened before. There are also bamboo stakes around the perimeter of the pot for the same reason. If you believe I should do something with the twine, just say so instead of making it a personal attack will you?

 

[indalo]

2 nd. pic. out of them four looks like mag. def. to me .

 

[indalo]

I don't think adjusting the Ph up to 6.5 will help

 

[Payaso]

Sorry for the interruption, now we bring you back to our regularly scheduled programming.

I don't know what this might be, perhaps verticilium, but I am no expert.

 

[twodogplant]

Would you take cuts off of this plant right now in an attempt to ensure the strain isn't lost (which might potentially push her further in that direction) or would you try to wait it out and see if she turned around (and risk losing the chance to take viable cuts and lose the strain)?

 

[twodogplant]

I don't think adjusting the Ph up to 6.5 will help

Well at the suggestion of the hydro store guy I tested the runoff of the coco. Thus far I haven't usually watered any mothers until runoff, I just water a set amount and they've seemed to be fine with it.

So on last night's watering I watered until runoff and tested the pH. I only watered with a bunch of liquid and powdered mycorrhizae (great white because I read somewhere that trichoderma can be helpful for verticillium wilt) along with some Cal/mag and Cannazym ph'd to 6.5-7 instead of the usual 6 or so that I go for.

With that input the runoff on all the mothers measured very acidic, down near 4. Is it possible that the medium is too acidic? Can coco runoff be misleading? I only water every other day with them since they are under low wattage tubular fluorescent bulbs so I have until tomorrow to figure out what to do next. The three other mothers look very healthy and have lots of foliage, it's just this one strain has historically been a slower goer under these conditions in the past so I initially just assumed it was that aspect of her phenotype.

 

[twodogplant]

I did spray a 1.5% h2o2 on some lower stems and a little would've gotten in the root zone. I've seen similar damage on young clones when I sprayed h2o2 near the rootmass.

 

[chronosync]

Have you looked at the roots?