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Why is sulfur never a consideration?

Discussion in 'General Marijuana Growing' started by Kingrow1, Mar 30, 2016.

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  1.  
    Kingrow1

    Kingrow1 Well-Known Member

    We add plentifull amounts of NPK and god only knows how much cal/mag, micro nutrients are needed in such small amounts you really have to try hard to get a deficiency in these, but i never hear any mention of sulfur.

    It seems to be needed in large enough amounts as cal or mag and way more than your micro nutrients with confusing deficiencies that half resemble iron, zinc and nitrogen.

    Just strange it gets little mention whatsoever....
     
  2.  
    hondagrower420

    hondagrower420 Well-Known Member

    Epsom salt is magnesium sulfate.

    And in flower you can use potassium sulfate.
     
  3.  
    Kingrow1

    Kingrow1 Well-Known Member

    I believe there is more sulphate than magnesium in epson salts, still it gets little mention or consideration even though it is classed as a secondary nutrient. I could sumise a cal/mag/so ratio of around 5/2/1 for marijuana possibly.
     
    churchhaze, Dogenzengi and since1991 like this.
  4.  
    jafro daweedhound

    jafro daweedhound Well-Known Member

    True sulfur is not something that is deficient very often. Nutrients required for plant growth are divided into 2 groups macro elements and micro elements. Sulfur is a macro element so it is used in fairly large quantities compared to other nutrient compounds. Sulfur is supplied by potassium sulfate and magnesium sulfate and others in lesser amounts. It is for this reason that deficiencies rarely occur. Sulfur is a immobile element so if a deficiencies does occur it will show up in younger / new growth first. Would usually shows up as yellowing of younger leaves.
    Internal consentrations considered adequate for plant growth (ratio)(dry tissue)

    N 1.5
    K 1.0
    Ca 0.5
    Mg 0.2
    P 0.2
    S 0.1
    *ACTUAL AMOUNTS MAY VARY, THIS IS MEANT AS AN ILLUSTRATION ONLY

    Any other questions , let me know....
    Peace and Pot
     
    Last edited: Mar 30, 2016
  5.  
    hondagrower420

    hondagrower420 Well-Known Member

    Sulfur is thought to help with resin production and terp profile.


    @RM3 preaches on sulfur, if I remember correct.
     
  6.  
    jafro daweedhound

    jafro daweedhound Well-Known Member

    MAGNESIUM SULFATE MgSO4 - 7H2OMg++, SO4=
     
  7.  
    RM3

    RM3 Well-Known Member

    I mention it all the time LOL
     
  8.  
    skunkwreck

    skunkwreck Well-Known Member

    Mostly old timers know about sulfur
     
  9.  
    skunkwreck

    skunkwreck Well-Known Member

    Actually if you have sulfur springs in your area go grab a gallon to use for waterings.... I know...it smells like rotten egg farts but it's beneficial.
     
  10.  
    RM3

    RM3 Well-Known Member

    Ah the secret weapon of the Hindu Kush Valley 8)
     
  11.  
    mackdx

    mackdx Well-Known Member

    Isn't the fart smell most likely due to hydrogen sulfide?

    From a chemistry vs plant physiology standpoint, is there any functional difference between introducing sulphur as a sulfide vs a sulphate?
     
    Dogenzengi and Kingrow1 like this.
  12.  
    Alienwidow

    Alienwidow Well-Known Member

    When i turn off the cal mag i turn on the mag sulphur in the last few weeks.
     
  13.  
    RM3

    RM3 Well-Known Member

    toxicity, there is zero issue with sulphates
     
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  14.  
    T.H.Cammo

    T.H.Cammo Well-Known Member

    Everyone wants to talk about Sulfur - but nobody wants to answer the OP's question! The reason Sulfur is very seldom a "deficiency" is because it is a very common element - it is plentiful in just about everything used as a "Soil-mix". With such an abundance; there is very little cause for a deficiency.
     
  15.  
    Dogenzengi

    Dogenzengi Well-Known Member

    Alienwidow,
    What brand of Mag-Sulfur do you use?
    I was just reading about that change last night.
    Bless,
    DZ
     
    Kingrow1 likes this.
  16.  
    hondagrower420

    hondagrower420 Well-Known Member

    It's just Epsom salts.
     
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  17.  
    Alienwidow

    Alienwidow Well-Known Member

    I use that humbolt stuff called magnum. Its by the same guys that make snow storm, and gravity, and have that picture of that little strange lookin troll on the bottle. The listed important ingredients are mag and sulfer. I cant find sulfer in any other usable form or id probably just use epsom salts and whatever sulfur i could find but i just havent found anything else....its not that expensive, its a little cheaper than calmag i believe. image.png
     
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  18.  
    Alienwidow

    Alienwidow Well-Known Member

    Lol, i know, with sulfer and some plant extracts i believe. Expensive epsom salts :lol:
     
  19.  
    youraveragehorticulturist

    youraveragehorticulturist Well-Known Member

    All the organic soil guys are using gypsum for Sulfur.
     
  20.  
    RM3

    RM3 Well-Known Member

    huge mistake IMO as that is Calcium Sulfate well unless their organic soil has clay in it ?
     

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