diseasedmind
Active member
Deficiency or toxicity?
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Deficiency or toxicity?
- Thread starter diseasedmind
- Start date
revegeta666
Not ICMag Donor
Deficity!
Jus kidding, looks like a phosphorus deficiency to me.
Take a look at the pics see if they relate to your symptoms
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Jus kidding, looks like a phosphorus deficiency to me.
Take a look at the pics see if they relate to your symptoms
How to fix Cannabis Phosphorus Deficiency (P) Pics & Symptoms
Phosphorus deficiencies cause dark splotches on leaves and can appear at the bottom of the plant on some of the oldest leaves. Learn to spot & fix the issue.
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PadawanWarrior
Well-known member
Full plant pics will help.
A leaf doesn't suffer from deficiency or toxicity, plants do.
chronosync
Well-known member
temps and humidity? night/day tent and root zone temps?
are you venting air? are you mixing the air in the tent/space with circulation fans?
if you are venting air where is it going?
environment can play a role in this type of sever necrosis
too cold in the root zone will slow or stop P uptake, for instance
leaves that look like that can happen in un-ventilated spaces, not sure why exactly, other than that plants need to breathe
what was the last thing you fed them?
are you venting air? are you mixing the air in the tent/space with circulation fans?
if you are venting air where is it going?
environment can play a role in this type of sever necrosis
too cold in the root zone will slow or stop P uptake, for instance
leaves that look like that can happen in un-ventilated spaces, not sure why exactly, other than that plants need to breathe
what was the last thing you fed them?
That is a good question friend, and it's asked a lot on many forums. For anyone to know what the soil problem is, the soil needs to be tested. It's so easy these days to check the liquid discharge or run-off and test it. If it's high, lower ppm or ec, if the ppm is low, then raise it with a complete fertilizer best suited for whatever growing stage the plant is in.
The answer to Deficiency of toxicity is easy to find the answer to.
Testing the runoff is the only real way to know for sure. All the other answers are just guess's until one stops and tests the runoff.
Just a hint for newbies - this is the kind of list of information we're looking for - the more the better.
Minimum:
- medium used (brand, version)
- pH and EC or PPM of both the nutrients used and the medium.
- a picture of the whole plant where it's growing
- temperatures
Minimum:
- medium used (brand, version)
- pH and EC or PPM of both the nutrients used and the medium.
- a picture of the whole plant where it's growing
- temperatures
The Complete Guide to Sick Plants, pH and Pest troubles!
I have put a lot of work into this for those who need it when I'm not around :) This thread has been updated 7/15/2010 All updates are in RED. Scroll down to the bottom for most of the updated stuff. If you need help please DO NOT post in this thread. Make a thread in the infirmary, or post...
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