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Potassium is not necessary for flowering?

Discussion in 'Growing Marijuana Indoors' started by Rubisco456, Oct 18, 2022.

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  1. #1 Rubisco456, Oct 18, 2022
    Alright, so what is the consensus on potassium in the flowering stage?


    I've been “doing my own research” on nutrient compositions of various solutions used on cannabis plants in industry and in scientific papers. After all my reading I’m starting to wonder if the hype with high potassium concentrations at the flowering stage is bullshit. Let me be clear - when I say HIGH potassium concentrations I've seen people say to just drop nitrogen and phosphorus out of the equation and hit it with a high potassium dose - Not sure what ppm people are talking about.


    Anyways I can’t really figure out if there really is any real merit to changing the nutrient solution. Here’s the paper that sent filled me with doubt: Effect of Potassium (K) Supply on Cannabinoids, Terpenoids and Plant Function in Medical Cannabis
     
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  2. #2 Headhunterpipes, Oct 18, 2022
    88888888888888
    What are you using to measure the nutrient levels ?
     
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  3. #3 sweedright, Oct 18, 2022
    There is almost no difference in my potassium levels between veg and flower. Phosphorus is whats important for flower.
     
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  4. #4 JMcGD, Oct 19, 2022
    I remember hearing that N and K are the two minerals that are easily leached from soils. This is why soil growers like to provide a bit more for late in flower.
    If I see deficiencies towards the end , it’s usually K.
     
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  5. #5 old shol4evr, Oct 19, 2022
    i try to keep all the macro nutes in balance , for both veggies and flowers, take into hand that with veggies that the nitrogen will cause more foilage while your hoping for fruits same for the magic flowers, the nitrogen will slow down bud production , just my opinion , so i ease back on feeding high or even balance amount of nitrogen to force more bud and veggie fruit production,
    i dont do away completly but i do lean to more p and k for the whole grow, both are for root and health of your plants, so just saying that if you dont want blossum end rot on your veggies that might also work to slowing production of your flower buds health also .i believe they both are the same a plant is a plant be weed or food.
    you mention the health of your macro nutes but fall short of what makes them All get to work which is micro nutes in my opinion again i think is more important than all in the soil life.
    i understand were your coming from though, all these products they claim fatten and bring out the smell and frosted flakes are super high in both P and K , so if they do or dont isnt it cheaper just to use that theroy with dry amends to scratch in the top of your soil and feed threw watering slowly , instead of a 8 ball effect on the plants
     
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  6. #6 bryan oconner, Oct 19, 2022
    You can quit watering your plants as well if your not added the suggest nutrients .
     
  7. #7 Rubisco456, Oct 19, 2022
    Listen, I'll try going 888888888 across all my macros and micros and I'll let you know how that goes
     
  8. #8 Rubisco456, Oct 19, 2022
    What do you mean by this? The flower formation? Size of the flower? The quality /THC/terpene production of the flower?
     
  9. #9 Rubisco456, Oct 19, 2022
    So in a nutshell you don't drop all the nutes, you just roll back on the nitrogen to slow down veg growth and hope that our plants put more energy into flowering?
     
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  10. #10 sweedright, Oct 19, 2022
    I mean the amount of potassium I use is about the same in veg as it is in flower.
     
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  11. #11 bryan oconner, Oct 20, 2022
    I have been using the same in veg and flower for about 6 years . Plus cal mag sugars lime juice .A grower could get all the numbers the same and it will work just fine . Like a 10/10/10 . .05/.05.05 so on. There is no need for bloom boosters like cha ching 5/45/15 . Locks the plant up and then you have to force the calmag into it .
     
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  12. #12 sweedright, Oct 20, 2022
    Agreed, way too much phosphorus and sometimes potassium in bloom boosters. All part of the "let me sell you this overpriced nutrient package that you absolutely don't need" mentality of many nutrient companies nowadays.
     
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  13. #13 old shol4evr, Oct 20, 2022
    i also say , if you walk up to a raised bed and stick your hand in and the soil moves other than your hand, you got soil that dont need help at all, let them worms and the web do there thang
     
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  14. #14 Rubisco456, Oct 24, 2022
    out of curiosity why would you have to force Cal Mag into it?
     
  15. #15 bryan oconner, Oct 25, 2022
    High P will lock the plant up .Meaning it will stop taking nutrients even though you give the plants nutrients the plant just can accept it. So calmag will put a bandage on the plant when a person pushes the p super high . So if a plant is locked up cant accept nutrietns from abuse it will take time for calmag to start working . I just say force . Its stuck so it works its way in.
     
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  16. #16 Rubisco456, Oct 26, 2022
    I'm
    I'm wondering if the Ca+ and Mg+ are precipitating out the phosphate ions when you add CalMag. I'm going to have to explore that, I've seen phosphate and calcium precipitate in aqueous solutions before and it's instantaneous, I wonder how that works in a solid substrate like soil.
     

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