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Guide to Nutrient Deficiency or Toxicity

Discussion in 'Marijuana Plant Problems' started by nick17gar, Nov 18, 2011.

  1.  
    Go go n chill

    Go go n chill Well-Known Member

    i think you just
    "Loved them too much" just give them water for a week or so. They are young and should not need anything right now. I had to give my2cents
     
    mista sativa likes this.
  2.  
    mista sativa

    mista sativa Well-Known Member

    I’m just trying to distinguish if it’s nitrogen or calcium. The cal mag product I use has nitrogen in it. I didn’t want to add more if that’s the problem. I will be just watering until the problem is more obvious... I’ve just never had this type of browning before. I’ve just had burning around the tips from hot soil. Never spots. At the same time I always grew outdoors, so I wasn’t constantly looking at my plants daily.
     
  3.  
    mista sativa

    mista sativa Well-Known Member

    Ok that’s what I was thinking from what I’ve read. Calcium seems more obvious because of the coco. I usually use coco loco which is treated, so I didn’t put much thought into it. It may seem like I’m feeding too much (maybe I am) but I added amendments at very low levels to the soil. The first tea was very weak. The second one could’ve of been a little hot, but the plant was liking it until I noticed this... I do believe it’s calcium though. I’ll get better pictures today
     
    Go go n chill likes this.
  4.  
    mista sativa

    mista sativa Well-Known Member

    There are absolutely no spider mites though.
     
    Go go n chill likes this.
  5.  
    Go go n chill

    Go go n chill Well-Known Member

    Wish I could say " I've never had brown spots"
     
    mista sativa likes this.
  6.  
    Roger A. Shrubber

    Roger A. Shrubber Well-Known Member

    there's something, leaves don't eat themselves
     
  7.  
    mista sativa

    mista sativa Well-Known Member

    There’s no bugs... here’s better pictures
     

    Attached Files:

  8.  
    lrg632

    lrg632 Active Member

    5ml Grow
    5ml micro
    2ml bloom
    2 ml hydroguard
    1ml silica
    Distilled water
    Reduced to 375 ppm 5.8 ph

    I water every other day, 60 humidity 72-77 temp, and 18/6 3 week old clones 12 inches tall.

    Any suggestions?
     

    Attached Files:

  9.  
    Northernmich

    Northernmich Member

    Ouch... rust fungi? Not sure.
     
  10.  
    Roger A. Shrubber

    Roger A. Shrubber Well-Known Member

    you're watering way too often, unless you have them in straight perlite. let them get nice and dry between waterings, keeping them too wet is bad for your roots, stunts them, and it locks out a lot of nutrients, which i think is whats happened to your plant.
    if you're feeding them that every time you water, that's way too much.
    bump that up to about 450 ppm, feed them that once a week, then give them ph'ed water in between.
    or, cut it down to about 200 ppm and alternate feed and ph'ed water
     
    Go go n chill likes this.
  11.  
    lrg632

    lrg632 Active Member

    They are in rockwool cubes and it's drying out almost every 24 hours. So
     
  12.  
    Roger A. Shrubber

    Roger A. Shrubber Well-Known Member

    are you feeding them that every time you water?
     
  13.  
    bobqp

    bobqp Well-Known Member

    IMG_20180203_112019.jpg IMG_20180203_112015.jpg IMG_20180203_112019.jpg IMG_20180203_112015.jpg Plants grown outdoors using power feed. This problem showed up 10 days ago. All new growth is yellow white leaves that die. All old main tips are doing the same. Started spraying trace elements mix folar feed the last 7 days trying to save them. Any help or info would be greatly apriecated .
     
  14.  
    CB7guy

    CB7guy Well-Known Member

    Go go n chill likes this.
  15.  
    Terrapin2

    Terrapin2 Well-Known Member

    any insight on what's causing this fading of healthy green to lighter green?
    new growth come and in healthy green then starts to fade.

    IMG_2570.JPG
     
  16.  
    bobqp

    bobqp Well-Known Member

  17.  
    bobqp

    bobqp Well-Known Member

    Maybe try spraying trace elements on it.
     
  18.  
    Roger A. Shrubber

    Roger A. Shrubber Well-Known Member

    at first glance i'd say mag deficiency, but that could also be light burn. you say new growth comes in healthy then fades? older growth isn't fading? i'd lean more toward light burn
     
    Terrapin2 likes this.
  19.  
    Go go n chill

    Go go n chill Well-Known Member

    Hey bro I’m new to growing but your girl looks light all over. I would give her a general dose of food at the next watering. But she looks good
     
    Terrapin2 likes this.
  20.  
    Terrapin2

    Terrapin2 Well-Known Member

    i use RO, straight coco.
    i feel like it's mag just not sure.

    i was thinking about giving it more cal/mag?
     
    Roger A. Shrubber likes this.

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