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heat or nute burn?

Discussion in 'Plant Problems: Pests, Disease & Deficiencies' started by valerien, May 13, 2011.

  1. #1 valerien, May 13, 2011
    i dropped my ppm about 50 when I first noticed this, because I knew it was a litlte bit higher than my normal methodology. I want to say some side tips of the first 2 fan leaves have gotten a bit yellow though over the last 12 hrs so maybe some more fresh water.

    just wanted to confirm, this is nute burn and not heat stress? the tips that look yellow are definately curling down a bit too.

    http://www.anarchs.com/val/micro/YellowTip1.JPG

    http://www.anarchs.com/val/micro/YellowTip2.JPG
     
  2. #2 valerien, May 13, 2011
    this also only appeared after i began foliar spraying haha. maybe just doing that too much? i'll be honest i definately do it more than twice a day.
     
  3. #3 Freakbro1, May 13, 2011
    In my experiences, foliar feeding is unnecessary
    and more of a detriment to the plant, since u are
    basically force feeding it. Just my opinion tho.

    Out in nature, I know theres acid rain and stuff,
    but I have never heard of nutrient rain lol.

    Freak
    :smoke:
     
  4. #4 vodkanerd, May 14, 2011
    Its not heat stress.

    Looks like the very early beginning of nute burn
     
  5. #5 valerien, May 14, 2011



    the earth does not rain reverse osmosis water. there are minerals in rain that plants use. (mainly iron and zinc are good for foliar feeding i believe, at least that's what's in this spray-n-grow.)
     
  6. #6 valerien, May 14, 2011

    thank you. i'm staying strong on the once every 24 hours foliar feeding and the fresh res should resolve all of this then. pics to come in 4-5 hours. of the 2 plants, day 10 since the oldest broke ground, day 8 for the other.

    from what I can see staring through the passive intake, all the new growth looks good.
     
  7. #7 sinsemillaplease, May 14, 2011
    Last edited by a moderator: May 14, 2011
    There should be no nutes used at that stage. Definitely nute burn. I'll also second the notion that foliar feeding is unnecessary. It's especially unnecessary at this early stage. They don't need anything but slight moisture in the medium... saturation will kill them.

    Just as a side note... the earth doesn't offer the perfect environment for cannabis at all. We do that. Basing what is beneficial for cannabis plants on what the earth supplies will inevitably lead to missteps.
     
  8. #8 valerien, May 14, 2011
    Last edited by a moderator: May 14, 2011
    zero nutes during my 2nd week of veg and zero foliar feeding is your recommendation? sounds really rough. i've cut back on the nutes for sure and am only foliar spraying once every 24 hrs now. doesnt seem like there's been any increase in the burn but growth is still occuring.
     
  9. #9 sinsemillaplease, May 15, 2011
    It's not just me making the recommendation. Read some popular grow books. Almost no one recommends feeding before week 3... very few recommend it before the start of week 4. If you absolutely feel you must feed them, foliar is not the way to go. It's like force feeding.

    Less is always better with cannabis. You're not going to kill your seedlings by not feeding them. They will show signs of needing nutrients for weeks before they would shrivel and die. You very possibly could kill them by feeding them too much too soon and it could happen in a day or two. I wouldn't even be recommending any course of action if you didn't already think it might be nute burn on your own... ya know? Something must be wrong... this is probably it.

    Additionally, you should expect your earliest leaves to turn yellow and fall off in the seedling stage. It doesn't always happen, but when it does its no reason to be concerned.
     
  10. #10 valerien, May 15, 2011
    i had some algae growth on the roots. retailer i purchased my kit/resevoir through says there's always going to be some light exposure through the starter plug/hydroton but that seems to shitty to be true...like i can't aoid the algae no matter what I do.


    i ran a 30% h2o2 solutino through the growth medium/roots about 6 hours ago, leaves began to droop but have since picked back up. have not foliar sprayed today and do not plan to. will give it a week or so and then just spray one of the 2 plants to see if there's a difference.
     
  11. #11 mindismoving, Jun 3, 2011

    just wanted to add that this post helped me out a lot, too. i have two plants in hempy buckets that tomorrow will be 3 weeks since they sprouted, and they've been growing WAY faster than i expected. they both already have 4 nodes, and basically appear to be exploding with growth, so being a n00b and getting anxious i tested them out at 1/4 strength nutes during last watering. they both still look strong but now one of them is showing some minor spotting which i'm assuming is a bit of nute burn from me jumping the gun, but i think next time this could be avoided if i knew what signs specifically look for when the plant is showing signs of needing nutes? i'm thinking i'm going to go back to just straight pH'd water until the 4th week, but if you could give some specific signs of hungry plants i would extremely grateful! sorry for jacking the thread a bit, but i think this might benefit a lot of antsy beginners like myself :)
     

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