Zakattack
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They're about an inch off the ground but the weather doesn't get too cold where I am so I doubt it the temp. Think I might up the mag in my calmag or just go with it. Could be the genetics..Are you plants up off the floor sometimes cold can bring on the redish colouring .
Yea I thought it might be quite a bit off spraying but I had the thought that the more I pump some mag sulphate into it the faster it would clear up.. Regarding how it could be the genetics, where would I be able to check up on that? ThanksThat's a lot of spraying! Leaf petiole , which are the leaf stem, so to say, are commonly purple.
It's probably genetics. Your stems look green to me
OR poor P utilization. In other words, it may be present, but not available.Purple stems = low P
Ya until you see purple on the main feed tube you dont have to worry muchAlso, come season time. How can we test this out? Take a tissue sample of the leaf with a purple stem, then a tissue sample from the main shoot with no purple? Very interesting. Got me thinking.
@GT21 you thinking genetics then?
I don't know how many folks here have had the opportunity to grow the same strains both indoors and out, I have had that opportunity. And, based on being able to do that, it is my opinion that this kind of petiole reddening is 100% related to phosphorous utilization, and, again based on my own experience, it's incredibly common in indoor cultivation, and can be rather difficult to diminish or eliminate.
Again, based on my experience and opportunities, I've also been able to observe that when it's related to genetics, the entire stalk and all stems have purpling, often in a striped form. Not just the petioles.
OR poor P utilization. In other words, it may be present, but not available.
Here, non-cannabis sourced information. Scroll to the phosphorous portion.
http://mgofmc.org/docs/nutrientdeficiency.pdf
But, like others are saying, your girls look pretty darn healthy. I'm not sure I'd worry about it too hard. I would continue to observe, and I might range pH to see how the plants respond.
I have more if you like. :)
I agree with possible genetics. the purple stems and low P is an urban myth sort of. Yes P deficiency can present with purpling of leaf and sometimes stems, but most of the time it is the genetics of the strain. I have run numerous strains over the years grown with plenty of P & K and have seen purple stems on very healthy plants.Also, come season time. How can we test this out? Take a tissue sample of the leaf with a purple stem, then a tissue sample from the main shoot with no purple? Very interesting. Got me thinking.
@GT21 you thinking genetics then?
Good to see youre going off a chart.... now 1 thing to know is that its good to swing the ph a little bit to hit all your micros and macros. You dont want to stay dead set at 5.8 at that ph you are right at the limit of p uptake. Might want to swing up a bit.Send it all my way! I'm all ears for learning as much as possible.. If it does turn out to be poor P utilisation, how would you suggest I correct that? I have attached a picture of my reasoning for making my water at pH 5.8... Would you maybe suggest I go a Lil higher on the ph an see if that makes a difference?
Cheers mate
Sweet.. On my next feed I'll give it a little bit of a higher value.. What would you suggest I go for in the next feed or 2.. Like 5.9 or 6.0? Or right up like 6.1?? The temperature is good I know it will never drop low enough.. Thanks BroGood to see youre going off a chart.... now 1 thing to know is that its good to swing the ph a little bit to hit all your micros and macros. You dont want to stay dead set at 5.8 at that ph you are right at the limit of p uptake. Might want to swing up a bit.
Phosphorus is a component of the complex nucleic acid structure of plants, which regulates protein synthesis. Phosphorus is, therefore, important in cell division and development of new tissue. Phosphorus is also associated with complex energy transformations in the plant.
P problems can come from cold weather and lowered electric conductivity, high iron contents and improper ph
I would try 6. But like i mentioned in the first post... dont look so much at the leaf stems.. look at the main stem for deficiency problems... if you have a p problem youll start seein stripes appear on the main stem followed buy yellowed dying leaves.Sweet.. On my next feed I'll give it a little bit of a higher value.. What would you suggest I go for in the next feed or 2.. Like 5.9 or 6.0? Or right up like 6.1?? The temperature is good I know it will never drop low enough.. Thanks Bro
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