define "semi-mobile nurient" (differences between PH spotting and calcium symptoms)

[lysol]

define "semi-mobile nurient" (differences between PH spotting and calcium symptoms)

Hey all,

this is just a general question about how you read your plants. I read in Stitch's book calcium is "semi-mobile" affecting sometimes the middle of plants in addition to / instead of the top as in a "pure" immobile nute that would only affect the new growth.

So if a hypothetical plant were to be spotting from the bottom / middle upwards, could that possibly be cal instead of PH? When it is said Calcium can affect tops middle and the whole plant, is that to say it moves downward only, or can move both downwards as well as upwards, and if both is it either 1 or the other for a particular strain, or can it also affect whole plants 'simultaneously'?

When they say it is "semi" mobile does that means it still always move from the top down if it is calcium, or does it affect different parts simultaneously, or move from the middle up like a mobile nute? How would you describe how a calcium deficiency progresses visually over time?

And then likewise have you ever noticed on some plants that PH produces rust spotting that can sometimes produce patterns kinda like "hollow" circles ( resembling a calcium deficiency but could be differentiated possibly by it affecting bottom before middle of plant? Or leaf margins vs center of leaf blades )

I am talking general strategy here, not a specific plant

For instance do you look to see if necrotic spotting is concentrated closer to leaf margins then veins to tell it is Ca, and look to see if spotting is in the middle of the blade to tell it is low PH?

 

[lysol]

No one knows anything about semi-mobile nutes?

 

[lysol]

 

[Blue Dot]

This is actually a good question.

I'm impressed lysol.

 

[somebody041]

i forgot what i came here to post... but those sure look nice

 

[habeeb]

to me, PH off shows alot more symptoms to tell you with twisted leafs, to lockouts to stunted growth..

but on your original question, Im not sure. to me instinct with your plant goes along way

 

[lysol]

Thanks Heb

Thanks Heb

Here is a picture of Manganese that affected more then just the tops of the plants for instance http://www.cannaversity.com/cannave.../article/Nutrient-Problems-with-Pictures.html Both books list this as immobile

 

[darookie2000]

Well, with mobile nutrients, you notice the deficiencies in the old growth first (lower leaves), since new growth pulls nutrients out of the old growth in order to work. I would assume with semi-mobile nutrients you can see it in both old and new growth, since it can't pull all of what it needs from the old growth. I usually see pH issues as multiple deficiencies simultaneously or classic symptoms like the pH claw.

 

[MynameStitch]

delete

 

[MynameStitch]

ok lysol, here is your reply:

So if a hypothetical plant were to be spotting from the bottom / middle upwards, could that possibly be cal instead of PH?

No, it would not be a calcium deficiency. Calcium starts on the middle part of the plant and starts to go upwards, never starting from the bottom up, UNLESS the plant is trimmed of it's lower leaves and the middle leaves end up being it's lower leaves; then it can start there.

When it is said Calcium can affect tops middle and the whole plant, is that to say it moves downward only, or can move both downwards as well as upwards, and if both is it either 1 or the other for a particular strain, or can it also affect whole plants 'simultaneously'?

I have only seen the calcium problems occur upwards only, it can affect the whole plant if the lower leaves fall off and leaving the middle leaves as the lower leaves.

No, calcium does not affect the plant at the same time, the plant shows it's deficiency from certain areas of it's roots are not getting enough and ends up showing on the leaves.

It works it's way upwards, if it affected a whole plant, it is because the plant dropped many lower leaves due to un specified reasons only then can the plant be affected as a whole. In severe cases yes, but that is only due to the plant dropping lower leaves and leaving the middle part of the plant it's lower leaves; then only can it affect the whole plant.

Yes, every strain is different, how it moves nutrients around depends on it's conditions it lives in.

When they say it is "semi" mobile does that means it still always move from the top down if it is calcium, or does it affect different parts simultaneously, or move from the middle up like a mobile nute? How would you describe how a calcium deficiency progresses visually over time?

Calcium starts around the middle part and works it's way upwards; only time it affects the whole plant is in bad cases and if the plant has lost many of it's lower leaves.

Calcium can only affect a certain part of the plant, never on the lower half, only on the middle to upper half, when the newer growth happens it grows normally, only then when it is mostly grown at it's normal size soon after can exhibit calcium problems.

And then likewise have you ever noticed on some plants that PH produces rust spotting that can sometimes produce patterns kinda like "hollow" circles ( resembling a calcium deficiency but could be differentiated possibly by it affecting bottom before middle of plant? Or leaf margins vs center of leaf blades )

Many times calcium is confused for pH spotting, pH spotting is normally the cause of the spotting due to it being off and calcium can't be absorbed properly; so in term you see the spotting.

Not always, but with the way you explained the situation does my information mean to.

From over the years I have seen many times more often than none that when calcium affects the leaf edges like a "normal" deficiency; that is most often due to not enough in the plants diet; if it affects the inner part of the plant; chances are there is some pH fluctuation going on as well as possibly not enough calcium. It depends, because there is so many factors that can change the way the plants move calcium.

For instance do you look to see if necrotic spotting is concentrated closer to leaf margins then veins to tell it is Ca, and look to see if spotting is in the middle of the blade to tell it is low PH?

I tell by looking at the entire plant as a whole when I determine if it's calcium or pH, along with the information the person gives, because there could be many causes of that, that is why it's important to get information; because if you went to the Dr's and said you got spotting, drs would think it's a rash rather than measles; when in turn if you go see him he could change his opinion just by looking at you and checking you out.

pH can show anywhere on the plant since the whole plant is affected and not just certain parts, if certain parts are affected then there is "hot spots" going on if mixture is not mixed properly.

I also look at the overall vigor of the plant, how the leaves are affected, are they up or down, droopy etc......

a plant with a pH problem will show differently than a plant that has just a calcium problem.

With pH there will be other problems

with calcium, the plant will look much different and more perky since the entire plant is not affected yet... changes once the plant gets worse though.

Are these the answers you were asking?

 

[lysol]

Are these the answers you were asking?

YES!! Thanks for your reply!

 

[bluntt]

i forgot what i came here to post... but those sure look nice

Lmao

 

[MynameStitch]

lol np, I just realized after re-reading my post how much I said the same stuff over and over again lol.


It was kinda hard for me to explain so sorry for re-peating myself so much lol