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The Charts--Helpful charts for making nutrient deficiency diagnoses

Seamaiden

Living dead girl
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This is my forth plant and I always get this!!!! I gave her General Hydroponics CALiMAG. Then I tried Epsom salt in, 1 tsp. in a gallon of water and strayed her down. I had a good bro tell me to use dolmite lime and mix it with the soil. It just seems I have this problem with calcium or magnesium. GO figure...
Start a thread and be certain to include all pertinent information.
Media
Environmental parameters
Feeding and husbandry (how've you been growing her?)
pH of the media, water and feed
Lighting

Others want to know if it's a seed or a clone, that doesn't really matter to me in this context. Offhand it's looking like a problem with P, but I don't see the reddened petioles that are typically the first indicator. As such, that would cause me to suggest K-, but I don't see the margin necrosis and spotting that's typical of a K-.
 
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I think I may as well just post these here charts up in their very own thread and then put that in my sig line, because I spend a lot of time posting these charts that I use regularly to help me make diagnoses on all my plants, cannabis included. One is specific to cannabis, the others, including the Mulder's Mineral Wheel (with periodic notations) helps us understand more about why one mineral may be in imbalance relative to another, or more, as with life, it is a wheel and not linear.

Enjoy, and use as often as you need. I do not take credit for creating these charts, only sharing them.



View attachment 363340



Please note with specific regard to this cannabis leaf chart: there is an error in that Ca is being shown under the heading of Mobile Nutrients. Calcium is an immobile nutrient, thus problems can occur on upper (newer) leaves only.
View attachment 363341

I'm adding a different Mulder's Wheel and removing the previous wheel, based on discussions with Protaide and other research. What I'd really like to do is get ALL the best charts onto one page, so I may decide to do some editing of this thread (I haven't decided yet). In any event, say goodbye to the old and hello to the new. I'm hoping this one's easier to work with.


View attachment 419429

1.20.15 (January 20, 2015).

I'm adding the Periodic Table of Elements for those folks who need a reference for abbreviated references, EG; You have a Ca-.

View attachment 477458
Thank you very much for adding this info! Very helpful..
 
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@Seamaiden

Here are some photos as promised

First we have a textbook case of N toxicity on a sativa leaning autoflower plant

20160417_185611.jpg


This is a case of NaCl toxicity. Please always make sure that the seaweed/kelp product is made of well washed and rinsed seaweed. I learned this the hard way

20160417_185351.jpg


When doing foliar with Epsom, newer use 2tsp/l as it will burn your plant

20160417_185326.jpg


It will also make your plants leaves really dark green, almost blue at first. Than if we add some pH fluctuation to it, this is what we get

20160417_185402.jpg


Here is another photo of a plant treated with a bit too much of Epsom

20160417_185700.jpg


Look at the color of those leaves that don't show much or any damage. They are extremely dark, nearly blue. One would assume that this is a N tox case, but like shown in the first pic, there's no clawing tips, and since I know I did too hot of a Epsom mix, this is the result.
 
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Hey everyone, thought i would ask this under the charts...Dimply leaves, cottage-chesse-thigh leaves, what causes it? Never really noticed any negative effects from it, but don't know what it is and can't find it on the web...
1467766382983-232419340.jpg
 
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Are any of the leaves twisting approximately mid-rib? If so, then I would suspect pH as the culprit here.
No not really, it happened with a few leaves in dwc, which I keep ph balanced 100% of the time in. If I had to guess I would have thought it would be from humidity or a problem with transpiration but humidity in my house stays around 50% rh.
 
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Hey Stumpy,
Do you foliar feed? Do you have a picture of the entire plant? Let Sea get a peep at it and let the diagnosing begin!
 
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Run off ph tests indicate that the water coming out of the bottom, very closely matches the water going in, still got to check all of them, but so far I'm thinking that they are all in the 5.6-6.2 range. Just growing in happy frog not using any extra nutes yet.
 

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