Some sort of deficiency?

kingzt

kingzt

Well-Known Member
Hey everyone! I just started to notice what I think is calcium def. Theyre brown spots on the leaves about half way up the plant all the way up to the top. Also I have some red/purple stems on these plants that shouldn’t be. It’s not from cold temps but maybe a phosphorus issue also. I use House and Garden base nutes and the fertilizer is on the lowers side of phosphorus. Any hell is great appreciated.
 

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kingzt

kingzt

Well-Known Member
CannaCountry said:
Have you checked for bugs lately?
Click to expand...
Oh yeah, it's not bugs, thankfully. Some sort of deficiency, just trying to figure out what it is. It looks like Ca but also P so I'm curious if these two elements are tied some how where maybe too much in one is blocking the other.
 
Merlin1147

Merlin1147

Well-Known Member
What’s your ph? P and Ca are antagonistic so an imbalance of one will cause an imbalance in the other. But Both P and Ca are mobile so as long as the temps are good you would expect to see symptoms down low not to the top. Are you absolutely positive it’s not bugs? Thrip are really hard to see. Are you using a 60x loupe to check the back of the leaf?
 
xtsho

xtsho

Well-Known Member
Merlin1147 said:
What’s your ph? P and Ca are antagonistic so an imbalance of one will cause an imbalance in the other. But Both P and Ca are mobile so as long as the temps are good you would expect to see symptoms down low not to the top. Are you absolutely positive it’s not bugs? Thrip are really hard to see. Are you using a 60x loupe to check the back of the leaf?
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I'm pretty sure calcium is immobile in the plant.


Knowing nutrient mobility is helpful in diagnosing plant nutrient deficiencies

Nutrients important for plant growth vary in their ability to move within the plant. Knowing how they move can be helpful when diagnosing deficiency problems.
www.canr.msu.edu www.canr.msu.edu
 
kingzt

kingzt

Well-Known Member
Yeah calcium is immobile from what I know. Also I’m positive it isn’t bugs. Thrips leave shite marks on the leaves while also leaving some shiny film on the top part of the leaf
 
R Burns

R Burns

Well-Known Member
xtsho said:
I'm pretty sure calcium is immobile in the plant.


Knowing nutrient mobility is helpful in diagnosing plant nutrient deficiencies

Nutrients important for plant growth vary in their ability to move within the plant. Knowing how they move can be helpful when diagnosing deficiency problems.
www.canr.msu.edu www.canr.msu.edu
Click to expand...
Technically they call it semi-mobile. It tends to go to spots and stays there. I don't say this to be a know it all or anything. Its an important distinction for diagnosis. Because mobile nutes show on the bottom and immobile at the top, but Calcium will show first anywhere on the plant. Cal confuses alot of people because of this.
 
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