Tutorial Quick and Dirty Deficiency Guide. With photos

[Waira]

Folken-
This thread is for compiling various deficiency pics gathered from all around,... the idea is to get several pics of each defc. and it's various symptoms, particularly the more atypical ones,... hopefully, to be included in a more comprehensive, consolidated thread for staff and members to go to for reference and diagnosis,... for now though, this thread will have just pics and brief text for noteworthy specifics about the symptoms. *** Edit*** - this thread is best combined with JM's Self Diagnosis thread, which has more extensive text explanations about the specifics; Open a second tab and dive in!.... ( https://www.autoflower.org/threads/self-diagnose-your-plants-basic-deficiencies-list.11/)....
Very often, the problem goes beyond just simple "lack-of" defc.'s, complicated-- or rather, muddied!- by pH issues (i.e., restriction and lockout), grow medium and method, and multiple defc.'s, which can alter the symptoms from what is considered typical in manifestation,... Hopefuly, we can gather enough samples to help clear the diagnostic fog and give as solid a diagnosis as can be,.... absolute confirmation of these symptom pics is not assumed! Likely, you will recognize many of them from the other sources out there,...
..Please post any questions at the Infirmary, or Live Help Thread .... Staff and members, if you have some good pics to potentially add, post them up where ever you like, and whistle up an Infirmary or LHT Mod' to have a look!

 

[Waira]

Nitrogen: (mobile) N... (mobile; absorbed: NH4+, NO3-)
...Generally, an over-all color fade on leaves, veins and all; usually no spotting/necrosis usually until well advanced,... starts from bottom up....

Toxicity symptoms: clawing at tips, sometime bowing of leaf fingers too; deep green color....

 

[Waira]

Phosphorus: P; (mobile; absorbed as H2PO4-, HPO4--) ....usually larger patches of necrosis, internal, margins,... sometimes can look a lot like Ca defc.; having both at the same time is not uncommon, and symptoms can be mixed...

>>>less common, weirder symptoms:

**** a truly weird manifestation here, not 100% sure it's P defc, but it fits the criteria well enough,... can't account for the colors, so trippy! -->

>>> Cool temp's can slow P uptake down, and can cause the classic purpling effect; seems to be unique to this specific situation... (of course, some strains are purple or turn purple as part of normal genetic expression regardless of temp's)...

 

[Waira]

Potassium: (mobile) absorbed as K+... margin browning, often starting on "teeth" tips; toxicity look similar to defc. symptoms

***--> not sure about this one,...

 

[Waira]

Magnesium: Mg (mobile) .... absorbed as Mg++

**Ca-Mg combo on this one! -->

 

[Waira]

Calcium: Ca (poorly/immobile).... absorbed as Ca++; some symptoms can look similar to less typical P defc. symptoms... not uncommon for both to happen at once, with mixed symptoms,...

>> More atypical:

>>> some more atypical symptoms: hammered veins...

>>> ...From same plants, classic:

 

[Waira]

Zinc: Zn; (immobile micronute) ....absorbed as Zn++

 

[Waira]

Manganese: Mn (immobile micronute) ... absorbed as Mn++

 

[Waira]

Iron: (Fe) (immobile micronute)... absorbed as Fe++; Fe+++
** tricky to distinguish sometimes, from Fe defc.,... lots of symptom overlap.... Fe can show yellowing from "palms" of leaves out, S seems more uniform, over-all yellowing, and top top bottom of plant; Fe hit tops first,... also, they lock out at opposite sides of the pH range: Fe under alkaline, S under acidic...

*** combo of Fe and Zn defc.'s caused by high soil pH ***

 

[Waira]

Sulphur: S; (immobile secondary nute)...absorbed as SO4--
** tricky to distinguish sometimes, from Fe defc.,... lots of symptom overlap.... Fe can show yellowing from "palms" of leaves out, S seems more uniform, over-all yellowing, and top to bottom of plant; Fe hit tops first,... also, they lock out at opposite sides of the pH range: Fe under alkaline, S under acidic...