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Yellow spots on older fan leaves

Shaheed

Member
Greetings and salutations people and a Happy New Year to ya.....I have a issue, right throughout veg cycle my plants are green and shiny and powerful, but going into flowering (from the very beginning) a few of them I have noticed start to form these yellow spots on the leaf starting from the bottom of the plant (on older fan leaves in particular). They start with a faint colour then as the days progress become more prominent, then in the yellow spots eventually the leaf starts to get dry and brittle (cell death?) then the affected leaves die and fall off. The plants look healthy otherwise, but this steadily spreads up the plant.....WHAT IS THIS AND HOW CAN I STOP IT??? I AM TRULY WORRIED, I AND MY BROTHER HAVE WORKED SOOOO HARD AND I WANT NOTHING GOING WRONG.....WE REALLY NEED TO MAKE BACK OUR INVESTMENT.....what's up ICMaggers?
 

Mikell

Dipshit Know-Nothing
ICMag Donor
Veteran
My brother and I.

Picture? Medium? Feed (pH, EC, ingredients)?

More information is more better.
 

Shaheed

Member
My brother and I.

Picture? Medium? Feed (pH, EC, ingredients)?

More information is more better.


Apologies for the bad syntax....will get a good camera a bit later. Medium is a homemade compost, coir dust (dry coconut shell dust), and a forest soil. I feed light with locally bottled nutrient called Green Tonic, I am actually trying to find a soil mix that enables me to run no-till and not have to use nutes at all.
 

Mikell

Dipshit Know-Nothing
ICMag Donor
Veteran
Hehe I was just being a prick.

Could be a calcium deficiency (out of range pH, abundance of other nutrients, water uptake issues, etc) or leaf spot disease.

What is the guaranteed analysis on the Green Tonic?
 

Shaheed

Member
Hehe I was just being a prick.

Could be a calcium deficiency (out of range pH, abundance of other nutrients, water uptake issues, etc) or leaf spot disease.

What is the guaranteed analysis on the Green Tonic?

0.56-0.00-0.22.......it claims to be mainly for the benefit of microbes. How can I sort out a Calcium deficiency if it is? Cal/Mag supplement? And if so, what pH should I administer that at?
 

Mikell

Dipshit Know-Nothing
ICMag Donor
Veteran
0.56-0.00-0.22.......it claims to be mainly for the benefit of microbes. How can I sort out a Calcium deficiency if it is? Cal/Mag supplement? And if so, what pH should I administer that at?

Mid range 6's for soil pH.

I would look for a complete one or two part nutrient solution. Over time I am sure you can develop a water only mix, but along that road I have found it useful to have a bandaid for when things eventually go not so correctly.

But first I would recommend you compare your issue to common image files for calcium deficiency and leaf spot diseases. Not all deficiencies are the result of low nutrient either re: adding CaMg products.
 

Shaheed

Member
Mid range 6's for soil pH.

I would look for a complete one or two part nutrient solution. Over time I am sure you can develop a water only mix, but along that road I have found it useful to have a bandaid for when things eventually go not so correctly.

But first I would recommend you compare your issue to common image files for calcium deficiency and leaf spot diseases. Not all deficiencies are the result of low nutrient either re: adding CaMg products.

Thanks bro! I am giving a talk at a Rasta Festival today so hopefully I can get the pics on here later or tomorrow (I was called last min). I really appreciate you guys, I never feel as though I can't ask for help here! Love being a part of ICMag!
 

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