How close to the light?
Stanks Go Perpetual In 2018!
How close to the light?
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- #1,082
Light isn't an issue.......Its still 18" above the very top. These are showing up in the middle height of the plant.
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- #1,083
One for calcium
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- #1,084
Ok, so I need some help from any of you great guys and gals. My Stankberry is starting to show signs of a deficiency or toxicity in its fan leaves. I am not sure exactly what it is....and its only showing in the Stankberry. I have a couple ideas about what it might be....but I don't want to say anything without getting some input from you all.
This plant is without a doubt the fastest grower out of all the strains I have grown so it leads me to believe its a deficiency as opposed to toxicity but I am not ruling out that as an option. The spots all look essentially the same on the leaves that its showing up on. I see about 5 or 6 leaves that are starting to look like this. All are fan leaves around the middle of the plant.
Ready.....set.....Give me your thoughts please! Help a Stank out!!!
TheFertilizer
Well-Known Member
Do you have heavy airflow on it? Windburn can do that, especially with the leaves canoe'ing.
Other thought is early onset manganese.
Root problems will give necrotic spots like that too though. Any possibility it's root bound?
Cannabis Wind Burn (Clawed Leaves) | Grow Weed Easy
Other thought is early onset manganese.
Root problems will give necrotic spots like that too though. Any possibility it's root bound?
Cannabis Wind Burn (Clawed Leaves) | Grow Weed Easy
I say Calmag, or Cal, or mag...lol
But Calmag is my vote
But Calmag is my vote
I don't see the yellowing of leaves that comes with Magnesium deficiency so I'm sticking with Ca
Doesn’t look like a deficiency, could very well be wind damage if you have fans on her.
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- #1,089
No, wind on the leaves are not the issue. Its been in the back of the tent until just starting flower. It got the least wind blown on it throughout the grow. Its in a smart pot.....so I don't think its root bound. It WAS root bound in its smaller pot, but that was going from 1 gallon hard pots.
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- #1,090
Two votes for Calcium
Now lets just add these notes to the equation.......fastest growing plant and nothing on any of the other plants that looks similar. Fastest growing plant showing it leads me to think a deficiency is more likely than a toxicity.
If it’s calcium you caught it early.
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- #1,092
Nope no wind damage.
I have a couple ideas......
1. Possible Calcium deficiency (I can't remember if this plant is in soil that I added additional calcium source in...I don't think it has the new amendments)
2. Potassium deficiency (not the strongest branches on this plant.....growing extremely fast hasn't helped)
3. Phosphorous toxicity (doesn't make sense to me on the fastest growing plant.....but I did start adding seabird guano to the teas and into the top dressing, but the Nukehead doesn't show these signs)
Potassium could be a culprit
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- #1,094
Yeah.....I am leaning towards a couple options since I don't know for sure what the deficiency is...but here is my thought.
I don't think its a pH issue as none of the other plants are showing anything, but I am going to use water pH'd to the sweet spot with some Cal-Mag and some Silica in it, nothing else. If it seems to stem the spreading to other leaves....then I know that it was one of those two issues. I could try one solution at a time but I don't like the idea of being wrong and how long it might take to get it back on track.
I don't think its a pH issue as none of the other plants are showing anything, but I am going to use water pH'd to the sweet spot with some Cal-Mag and some Silica in it, nothing else. If it seems to stem the spreading to other leaves....then I know that it was one of those two issues. I could try one solution at a time but I don't like the idea of being wrong and how long it might take to get it back on track.
Wise move Van, if it’s calcium you’ll know soon.
TheFertilizer
Well-Known Member
Doesn't calcium tend to look more like rust spots? These look more like necrotic spots to me.I don't see the yellowing of leaves that comes with Magnesium deficiency so I'm sticking with Ca
Well, I would steer away from calcium just for the fact that calcium deficiency usually has redish/yellow rust-like spots, whereas these are brown/necrotic spots. Manganese will do that in onset of defeciency.
Toxicities are a little harder to track, but one thing to consider is that toxicity doesn't necessarily need to occur before lockout will from high NPK levels. So for example, you could be in excess on some element that's causing a manganese lockout.
This is in your stank soil right? Any idea what your pH is? It might be helpful to know because if it's in a range where one element is more absorbed than the other, that makes it easier to troubleshoot toxicity.
Kinda gives me pause you adding Cal-Mag to your soil. Everything I've heard ( from people with no authority who are probably full of it) is that synthetic nutrients will kill your microherd. You might give it the calcium fix it needs, but nuke your soil life :/
But again I don't know how much truth that holds. What do you have for Cal-Mag?
I stopped using RO a long time ago
Your advice got me to switch.
Spent $300 on an RO filter and now it’s in the closet gathering dust. Lol