-
As of today ICMag has his own Discord server. In this Discord server you can chat, talk with eachother, listen to music, share stories and pictures...and much more. Join now and let's grow together! Join ICMag Discord here! More details in this thread here: here.
Dude, I use AC … right now, my humidity is 65% …. You dont have to be that rude. Even with ac turned on and humidity on 65 … They still burns
Your problem stems from growers' errors and not nutrients.
Yeah, i think that too .. but man, i'm a 5 years grower, already won cannabis cup here in Brazil, i have degree on chimestry and work with soil in my job ... so, i'm not any newbie. But ... i rly don't know what to do anymore. On veg, i always used 1.5 / 2.0 EC and never happend nothing like this ... The only thing that i'm doing different than the others thing that i used to do ... is because i was using crop steering, watering everyday 500ml. About high Humidity i rly don't think that this is a problem on veg stage, by the way, high humidity is a vegetative steering !
Do you think it could be a problem with overwatering? The only thing I was doing different from what I did before was this. Now I was watering every day or every other day. But, I never had experience with coco, and they made a fuss in my head saying that coco watered every day, that if I let it dry out it would cause problems, etc.
Now, I haven't watered since Sunday. I'm going to let the pot dry out a lot and then water it with hydrogen peroxide to improve the roots. Ahhh speaking of roots, there's a symptom worth talking about... I've seen my roots come out at the bottom of the pot and they were white and healthy... however, now that the plant has this problem, the roots have simply disappeared! !! I've never seen anything like it in my life. So I'm guessing there may have been a root rot.
It's a water management issue.
Coco coir can overwater it?
Do you think that could be a overwater problem?
I'm not there friend watching you water and I don't know your water-holding capacity. So I can't give you advice not knowing that. Sorry.
I send a sample of my destroyed leafs to analysis and that's was the result:
"Since here in Brazil, we don't have any specialized cannabis laboratory, I was the first to send it to my local lab, so I don't have any results from a standard to know the parameters of a healthy leaf... so I asked Chat GPT, and it provided me with the following parameters as a basis: "
As a basis, you can notice a depletion in magnesium (Mg), but what stands out the most is the excessive amount of potassium (K). The issue is that I flushed my coconut substrate quite a bit and overwatered before transplanting my clones with an EC of 3.0 from Athena, which is what they recommend doing. I am truly completely lost, I don't know what to do anymore."
"Since here in Brazil, we don't have any specialized cannabis laboratory, I was the first to send it to my local lab, so I don't have any results from a standard to know the parameters of a healthy leaf... so I asked Chat GPT, and it provided me with the following parameters as a basis: "
As a basis, you can notice a depletion in magnesium (Mg), but what stands out the most is the excessive amount of potassium (K). The issue is that I flushed my coconut substrate quite a bit and overwatered before transplanting my clones with an EC of 3.0 from Athena, which is what they recommend doing. I am truly completely lost, I don't know what to do anymore."
chronosync
Well-known member
other pics look good, in a tent
looks like you are in a different space now ...
no mention of air exchanges. they have that look like low respiration/transpiration
anything majorly different with this setup vs the tents?
edit: also over-watering. too much water in coco before roots are established is no good
looks like you are in a different space now ...
no mention of air exchanges. they have that look like low respiration/transpiration
anything majorly different with this setup vs the tents?
edit: also over-watering. too much water in coco before roots are established is no good
Ca++
Well-known member
Hemp Leaf Tissue Nutrient Ranges: Refinement of Reference Standards for Floral Hemp | NC State Extension Publications
As a newly legal crop, little information exists about optimum nutrient levels in hemp. This publication provides additional information on hemp leaf tissue nutrient ranges from a survey conducted between 2017 and 2020.
content.ces.ncsu.edu
Your N might be right, but P&K are up about 125%. Ca is in the upper numbers, which means the vpd probably isn't bad. Mg is actually alright, but it's surprising, and there is some crazy numbers following. Nearly 20x too much Zn, which must be keep lower than Fe (in feeds). Which is only 6X too strong.
Did I say the day off watering was odd and ask about runoff?
Such leaning towards the uptake of small stuff, is usually a sign of low pH. However NPK are rapidly taken from solution, while most of that trace stuff tends to build up. It's why coco needs some runoff, and no hard dry backs. I feel they must be present in excess.
I don't think I can be bothered to fetch the Athena feed chart.
I was watering everyday, using crop steering program ... 7 events os watering everyday, the first of the day with a lot of runoff. (I have automatic irrigation).Hemp Leaf Tissue Nutrient Ranges: Refinement of Reference Standards for Floral Hemp | NC State Extension Publications
As a newly legal crop, little information exists about optimum nutrient levels in hemp. This publication provides additional information on hemp leaf tissue nutrient ranges from a survey conducted between 2017 and 2020.content.ces.ncsu.edu
Your N might be right, but P&K are up about 125%. Ca is in the upper numbers, which means the vpd probably isn't bad. Mg is actually alright, but it's surprising, and there is some crazy numbers following. Nearly 20x too much Zn, which must be keep lower than Fe (in feeds). Which is only 6X too strong.
Did I say the day off watering was odd and ask about runoff?
Such leaning towards the uptake of small stuff, is usually a sign of low pH. However NPK are rapidly taken from solution, while most of that trace stuff tends to build up. It's why coco needs some runoff, and no hard dry backs. I feel they must be present in excess.
I don't think I can be bothered to fetch the Athena feed chart.
Hemp Leaf Tissue Nutrient Ranges: Refinement of Reference Standards for Floral Hemp | NC State Extension Publications
As a newly legal crop, little information exists about optimum nutrient levels in hemp. This publication provides additional information on hemp leaf tissue nutrient ranges from a survey conducted between 2017 and 2020.content.ces.ncsu.edu
Your N might be right, but P&K are up about 125%. Ca is in the upper numbers, which means the vpd probably isn't bad. Mg is actually alright, but it's surprising, and there is some crazy numbers following. Nearly 20x too much Zn, which must be keep lower than Fe (in feeds). Which is only 6X too strong.
Did I say the day off watering was odd and ask about runoff?
Such leaning towards the uptake of small stuff, is usually a sign of low pH. However NPK are rapidly taken from solution, while most of that trace stuff tends to build up. It's why coco needs some runoff, and no hard dry backs. I feel they must be present in excess.
I don't think I can be bothered to fetch the Athena feed chart.
I buffered my nutrient solution with an EC of 2.0 using Athena before transplanting my plants... they recommend this since they don't have separate calmag in the pro line .
What's driving me crazy is that I'm using the exact same coco, my next-door neighbor is using it too. We split the same batch of coco, and his plants over there are growing perfectly. The only things that are different are our lighting setups - he's using a 120-watt quantum board for a 1x1 veg, while I have two 600-watt quantum bars, but I'm running them at a maximum of 100 watts each (I have a smart plug so I can see how much they're consuming at any given moment), and the nutrients... he's using REMO, and I'm using Athena, but I've already selected four plants and fed them with REMO, and nothing changed... they continue to have weak growth and burning on the older leaves.
Watch this video at this part (2:00) I think this might be happening to me as well. What I have to consider is that, even though I have two quantum bars running at 20%, I have more light and a better-distributed PPFD than my neighbor's grow. So, the metabolism of my plants is higher than theirs, which is causing this deficiency to show up. I really don't know what else to do at this point, especially since I have a plant here in peat and perlite that is also showing signs of burning (much less than the others, but still burning and growing slowly).
BurntBacon
Active member
No need to ever run above EC 1.2 in my world. Give them a good flush, resume at lower EC, probably CalMag at 2-4ml/l and see what happens. I feel your pain and have been there. To me, coir is best on 3-4th run, lack of Cal/Mg and over nutrition are the problems I see 9x out of ten.
Welcome aboard Sentimento.
But this deficiency persists even after 2 months of me with the plants. I keep thinking, if it were a nutrient deficiency, it should have improved over time.
I really don't know what else to do, and the worst part is that I rely heavily on this harvest to be able to make oil for my mother-in-law and my friend's mother. They are depending on me.
BurntBacon
Active member
I don’t think deficiencies are the problem, but too much input. Back off nutes until you see a positive change. High humidity will make things difficult.
Legalcdn
Well-known member
I tried those floracaps and it was not good. Some spots were dry under the cap. 100ml each watering is low from my point of view. I grow in coco 3 gallon (12 litre) and i was watering 4 x 400ml.
Do you get runoff? Have you measured EC at runoff? Salt could be building up.
www.cocoforcannabis.com
Do you get runoff? Have you measured EC at runoff? Salt could be building up.
Watering Coco - How to Water Cannabis Plants in Coco Coir - Coco For Cannabis
Coco Watering Guide. How to water cannabis in coco for maximum growth. Includes guidelines for coco watering frequency and a coco watering schedule.
www.cocoforcannabis.com
