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Day 46 NL Auto: Multiple Leaf Problems Developing after Possible Nute Lock and 2x Flushing — Should I feed again @ lower TDS? What’s wrong?

CRIM_mir
CRIM_mirstarted grow question 4 years ago
Hi growmies! Wks 3-5: overfed 3 plants Wk 6: TDS after plain h20 1800-2300ppm; 2 flushes w/ gallon h20/plant Wk 7: TDS readings 500-800pp, but 1 plant showing multiple types of leaf problems I thought I fixed it, but now I don’t know what’s up or what to do? Thoughts?
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Leaves. Color - Yellow
Leaves. Color - Dark-brown
Leaves. Color - Mottling
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MaxGrowCanada
MaxGrowCanadaanswered grow question 4 years ago
Hi friend, You do seem to have multiple deficiencies present. When you get your runoff ec and ph under control, it will take some time for the plant to react, even then, the severely affected leaves are now being abandoned and will not recover. I would suggest removing the ones blocking light from bud sites and let the plant take care of the rest. Hope this helps,
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NorthernFrostCannabis
NorthernFrostCannabisanswered grow question 4 years ago
Flushing... I will list some points that not only challenge the absurd impracticality and illogicality of this myth, but point out how the pseudoscience behind it is fundamentally flawed (as is all pseudoscience) and can be countered by what is known about basic plant biology. 1. Robbing plants of essential nutrients at any stage of their life cycle is NOT beneficial for growth. I challenge anyone to provide a single peer reviewed paper from a reputable journal that provides evidence suggesting otherwise. 2. If this was practical, wouldn’t you expect all big agricultural hydroponic growers adopt the same practice? 3. Plants take minerals into their tissues, from their roots via the treachery elements; i.e. xylem. Once these minerals are in the plant, they are there to stay, the plant does not expel them, unless it’s through senescence-driven abscission of leaf petioles. From the treachery elements nutrients are translocated into the phloem - the plant’s ‘blood supply’ - after being integrated into various biomolecules, or are used for various metabolic functions. Where is the logic in thinking the plant ‘uses’ these up in that last week of flushing, in order to avoid smoking them? All the N P K Fe Mg Ca etc. is still there. 4. For arguments sake say we counter the last point by suggesting these minerals in their ‘raw form’ will taste ‘hasher’ or ‘nastier’ in the form of pyrolytic breakdown products (formed when weed is burned) than artifacts of larger biomolecules of which these minerals/macro nutrients are now a part of, for example phosphorylated PO43-. Even if this was the case it still doesn’t correlate with the myth, as the transports steam in the treachery elements is measured in minutes not a week. i.e. a PO43- molecule does not wait around in these vessels for a week before subsequent translocation and modification. 5. If there was any truth to this myth, then plants grown in soil would always taste worse than plants grown in hydro. Why? Because obviously soil is not an inert medium you can flush for a week. And a plant CANNOT distinguish between a PO43- molecule that comes from soil from that of a PO43- molecule that comes from hydro solution (which also debunks another myth, but we’ll leave that one). 6. Are there studies that have conducted double blind trials to investigate if flushed weed tastes any ‘sweeter’ than unflushed weed. Again, need peer reviewed papers. And doesn’t have to be weed, can be strawberries or any other type of fruit. 7. What is the proposed mechanism to support this myth, and how is it consistent with fundamental plant biology. 8. How does starving the plant of food in the last week increase thc production in the trichome? Papers? 9. Given, under certain conditions stressed plants upregulate certain defence compounds, but they will almost certainly produce less inflorescence weight per watt of light. Growth is always retarded under stress - not promoted. Nutrient starvation is a form of stress. Looking for peer reviewed papers that suggest otherwise. Those of you set in your ways, each to their own and best of luck to you. Those who are willing to change their views in light of new evidence, or lack thereof, be ready for increased yields by feeding those hungry ladies right up until the second you chop.
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GMSgrows
GMSgrowsanswered grow question 4 years ago
A lot of your leaves that went through the lockout do to being overfed will whither and die. You have to watch the new growth now for improvement. Make sure your ph is in line as well as your ec. If your ph is out you will still experience lockout do to incorrect ph instead of lockout do to to much nutes. Cheers
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