Iron Deficiency??

Discussion in 'Marijuana Plant Problems' started by Growes73, Sep 12, 2017.

  1.  
    Growes73

    Growes73 Member

    Anyone think this may be an iron deficiency?
     
  2.  
    Growes73

    Growes73 Member

    20170912_170319.jpg
     
    Tim1987 likes this.
  3.  
    Growes73

    Growes73 Member

    20170912_170331.jpg
     
    Tim1987 likes this.
  4.  
    raggyb

    raggyb Well-Known Member

    same question going through my head right now, along with what's a Maganese deficiency look like.
     
  5.  
    raggyb

    raggyb Well-Known Member

  6.  
    raggyb

    raggyb Well-Known Member

    Mn, Necrosis and spots.
    Necrosis, hmm, here's a called out CaMg Necrosis, or maybe it was Mn? Or maybe this chart has error
     
    Last edited: Jul 11, 2018
  7.  
    raggyb

    raggyb Well-Known Member

    So the peeps posting this got me thinking of above Q, because it shows soil has a unstable point at 6.5 pH above which you dont get Mn and Fe, and below which you don't get P/Ca/Mg. So I don't know if you get all or is it none of those 5 at pH6.5 in soil. ouch.
    oh and I forgot this chart for completeness

     
    Last edited: Jul 11, 2018
  8.  
    Tim1987

    Tim1987 Well-Known Member

    How close is the your light?
    How strong is your feed?

    Looks like most tops to the left are generally green?
    Whereas the tops toward the centre of your tent are yellowing?
    What is your light source?
    Canopy temps?

    Tbh i think it could do with some plain water as well.

    Ph of your media?
    Ppm of your feed? How often?
    What type of medium?
    Watering how often?

    Could be a few things.
    It doesnt immediately look like iron deficiency.
    Looks either under, or over nuted/salty.
    Or ph issues.
    Or both.

    Need more information.

    :peace:
     
    Last edited: Jul 12, 2018
    Overgrowthegov likes this.
  9.  
    raggyb

    raggyb Well-Known Member

    I tried to bring this thread back alive because I was searching iron and Mn defs out of curiousity but maybe Growes73 is checked out. Plants don't look too bad but yeah I see an what I've felt is an early over nute sign
     

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