Heavy yellowing 3 weeks into flower

[NorthernKronic]

Strain of Mj? Burmese Delight, and bagseed

Hydroponic or soil? Soil

From seed or clone? Seed

Age of plant in question? 2 months 1 week

What stage (Veg/Flower; how many days into)? 21 days flower

Medium (Soil, Rockwool, Hydroton etc.)? Soil

Container/Pot size? 3 Gallon grow bag

Have they been transplanted, if so how long ago? Yes, before they were put into flower

If soil, composition ratios (peat moss, perilite, vermiculite etc.)? 100% FFOF

Water runoff Ph? not sure will check tommorrow

Nutrients added? Earth Juice grow in veg and Earth Juice Bloom in flower

Ratios of nutrients (N% P% K%)?

Feeding schedule? after 5 weeks old, fed 1 tbsp per gal EJ depending on veg or flower every other water


When were they last fed/watered? 2 days ago

How are you determining when to feed/water (weight, wilting, etc.)? weight of the bag and dryness of soil on top.

TDS/EC/PPM? dont have a meter

Tap/RO/Distilled water? Tap

Ph before and after adding nutrients? before 6.5 after i will measure tommorrow

Is your Ph equipment properly calibrated? not quite sure.

Light intensity/Age of bulb/Wattage? 360 watt conversion hps running in 400 watt mh ballast 3 weeks old

Distance to the canopy? 8-13"

Temps at canopy? 84

Temps at root zone or reservoir? 80

Day/Night temps (Min.-Max.)? day 80-85 night 70-73

Current air flow (CFM)? 449

Is there air blowing directly onto plant? Yes there is an ocilating fan blowing on it.

Using CO2? No

Relative humidity? not certain maybe 50%

Growing technique (Scrog, Sog, Supercropping etc.)? BOPITC (Bunch of plants in the closet.)

Has plant recently been pruned, clones taken, fimmed or pinched? Just before flower 10 clones taken from burmese delight none from others.

Pests? No


Hey everyone, Heres a look at my first sick plant, it is the burmese delight at 3 weeks of flower. Ive got yellowing of my lower fan leaves and some of the upper ones, it has gotten worse over the past week, any ideas of what it is?
I was thinking maybe nitrogen def or calcium, what do yall think?






Next up is a plant that is grown from some good bag seed, it has the same symptoms of the burmese just at an earlier stage take a look






If anyone could help me out on what this is and how to fix it (hopfully cheaply) that would be greatly appreciated. Thanks everyone,
-N.Kron

 

[cadillachydro]

Im too ripped to read thorough all that right now. Here ya go man.

http://www.icmag.com/ic/showthread.php?t=11688

Good read from Stitch

 

[JDOG6000]

Looks like a calcium or Mag deficiency.
Calcium def. causes N def.. The plant needs calcium to feed.
So add about 5 Ml. of cal mag per gallon of water ,except when you flush.
This will cause the flowers to grow nice and green and fat.
But the yellowing that has accured will stay. If you want to add some sugar/molassas it will make up for the sugar it can't get from it's fan leaves since they are yellow.
I use calmag plus at about 1/2 - 3/4 of a teaspoon per gallon.
Hope that helps.
Peace

 

[JDOG6000]

It's possible it could be under fed in general.

 

[Core]

have they been fed recently?....i think you are underfeeding this girl....little yellows spots begin 2 show on older leaves?.going for discolorment?.....even veins will get yellowish after a while and leave shrivvle 's up gets brown and dies?could also look like a ph fluxuation problem....
but 2 be shure you need 2 callibrate the meter first ....take runoff or soils ph and look if everything is in check....

 

[Growdoc]

The plants have used up all the nutes in the bag and now need exturnal source of food. You must up all your feedings and maybe think about dobble bagging them so the roots get more space.

GrowDoc

 

[20kw dreams]

Not a Ca def, or Mg def. IT IS A NITROGEN DEFICIENCY!

PEOPLE ON THESE THREADS NEED TO STOP BLAMING EVERY DEFICIENCY ON MG! Mg def doesn't cause yellowing leaves! Mg deficiency causes INTERVIENAL CHOLROSIS! This is yellowing BETWEEN the viens, followed by orange spots, or necrotic patches as it were, and rarely coincides with an N deficiency, as when N is deficient, there is not a heavy demand for Mg.

End Rant

Sorry NorthernKronic You are supposed to use the Earth Juice Grow in flower as well as the bloom, not just the bloom. You feed both during veg and flower stages, just at different ratios. Pick of the micro too if you don't have it. The mix is on the back of the bottle.

The first 2 waters with the grow included, use it at 1.5 strength. This will help recover from the deficiency. Forget what anybody may say about doing that giving you too much N delaying flower. That is only in excessive concentrations over a long period.

For future reference, if you have what may be a deficiency, it might also be helpful if you wrote the NPK rations, as well as the Ca&Mg.

Good luck with the BOPITC bud:smile:

 

[gratefuldawg]

I've heard from BOG himself that he has to bubble his earthjuice for at least 24 hours cause it drops the PH so much. Could be lockout of various things. Go get a ph meter, and check the PH after nutes are added, and also check your runoff to see if you need to flush for awhile. Lockouts will only get worse, it looks like you can still recover nicely from this. It does look mainly like a nitrogen defic. That'll start lower and yellow from the tips of the leaf towards the stems, and that's what it looks like. I'd go with a 2-in one or a 3-in one PH/TDS/EC meter. Check your ppm of your starting water and let us know, it's tough getting the K/Mg/Ca ratio right when you don't know how much ppm of Calcium, Magnesium, etc is in your tap..RO is a good way to go. Time to spend some money if you want top quality meds.

 

[Blackvelvet]

You are supposed to use the Earth Juice Grow in flower as well as the bloom, not just the bloom. You feed both during veg and flower stages, just at different ratios. Pick of the micro too if you don't have it. The mix is on the back of the bottle.

I agree. The earth juice bloom has 0 nitrogen.

 

[NorthernKronic]

Hey all, fed all the ladies today, a mix of 2 tblspns of ej grow and 2 tblspns of ej bloom, they are liking it a lot, the yellowing is already starting to lessin. They all look a lot better, on a down note, found a bunch of balls on the burmese delight i took em all off and i will be on hermi watch from now on. It sucks but what can you do. Thanks for all of your help, and i do have a ph meter its just a rapitest meter im not sure how to calibrate it. I put it in a glass of tap water and it was just about 7. the runoff seemed to be about 7.22 i dont know if that is right, when i have $$$ i will get a ppm/ec meter. Thanks everyone.

-N.Kron

 

[JDOG6000]

Not a Ca def, or Mg def. IT IS A NITROGEN DEFICIENCY!

PEOPLE ON THESE THREADS NEED TO STOP BLAMING EVERY DEFICIENCY ON MG! Mg def doesn't cause yellowing leaves! Mg deficiency causes INTERVIENAL CHOLROSIS! This is yellowing BETWEEN the viens, followed by orange spots, or necrotic patches as it were, and rarely coincides with an N deficiency, as when N is deficient, there is not a heavy demand for Mg.


Cal def will look like N def.
It does cause yellowing. Sorry bro, but your wrong about that.
N def and cal def are often mistaken for eachother.

 

[20kw dreams]

And I'm sick of hearing about the damn K/Ca/Mg relationship. Damn people around here think they are God damn botanists! That is SO not cannabis specific, and is realistically only a problem for us when using coco with non-coco nutrients.

lockout = high EC. You wil only get a lockout if you have very young plants, have a serious pH prob, or are feeding your plants WAY too much.

Use the grow dude. You have the simplest and most common deficiency out there, but everybody thinks they need to have an answer to your problem that makes it sound like they know what they are talking about.

Sorry everybody...it's just one of those things that urks me good

 

[ItsGrowTime]

Growing technique (Scrog, Sog, Supercropping etc.)? BOPITC (Bunch of plants in the closet.)

That was friggin funny.

EDIT: OMFG at the scarecrow rofl good one 20k

 

[Guest]

I think they just didn't have enough nitrogen to get through the stretch. Try using veg nutes right through the stretch (2-3 weeks of flowering) and then switching over. They might have been underfed in general though.

 

[NorthernKronic]

Hey all,

Yea ive come to the realization that i was very ignorant in my feeding schedual when i started flower, makes sense that you should keep giving em a good amount of N when they are streching... duh.. but instead all i did was give a fert(ej bloom only) that was 0-3-3 so that would probobly cause a N def. They look way better since i hit em with a good dose of Grow yesterday. I would also agree that they are looking underfed, i will be bumping up the intensity of the feed over time for the next two or three weeks, then flush. Thanks for all your help everyone.

PS. JDOG and 20kdreams, thanks for setting me straight on what it was and how most people usually misdiagnose things. I think everything will be easier once i pick up a nice ppm/ec meter, but thats in the far future. Thanks agian everyone. Peace
-N.Kron

 

[Grat3fulh3ad]

And I'm sick of hearing about the damn K/Ca/Mg relationship. Damn people around here think they are God damn botanists! That is SO not cannabis specific, and is realistically only a problem for us when using coco with non-coco nutrients.

And not even a problem in coco if one backs off the K a wee bit...

 

[gratefuldawg]

Hey 20kw dreams, not everyone is gonna know everything you know right off the bat. Go mix some earthjuice and keep feeding it to the plants without checking the PH, I'd love to see your results. How come the lucas formula, grow green formula ect all have the k/ca/mg ratios I'm talkin about? Is that a mistake?? It's not like I'm giving false information here. I've had lockout occur when the plants were in mid flower, and let me tell you..it fuckin sucks!! Also I just had a problem with using sweet along with calmag, was it the ratio that was fucked up?? I'm kinda thinking so. Your buds are nice, but mine are just as good, and JDogs are just as good, if not better. So I guess we'll just go around thinkin we know what we're talking about.

Yo NorthernKronic, I'd give them both grow and bloom for a couple weeks, and then switch to just bloom, and cut the nitrogen out.

Peece.

 

[20kw dreams]

I understand completely, but I have used EJ with no meter and it was a great grow. My first grow ever, actually. Actually, not even my grow, I just watched it for 1 month. Actually, I like saying actually, actually..lol..

No trying to be a dick at all, it just urks me is all. I have no doubt that everybody has the best intentions of helping each other out, no doubt whatsoever. That being said, I think often times more harm is done then good, and people shouldn't respond unless they are sure about something. If anyone here had takin a minute to really look at what was going on with his plant, both in picture and in writing, then you would have noticed he was giving NO nitrogen.

As far as comparing our results, I won't even go there, as neither of os have any personal experience with each other or each others herbs. I don't believe I even have any good pics of my finished herb in my gallery. That herb in that photo is 5 weeks into flower. I personally know some pretty amazing growers, and my herb is cherished among them. And besides THAT, my concentration is more on high yielding varieties then high potency varieties.

@ JDog - You are absolutely mistaken bud. Not even trying to argue at all, I just want you to know. Do more research on Ca deficiencies. It will cause small necrotic spots..as in actual little circular spots. This is cannabis specific as well. It actually appears similar to an Mg deficiency is appearance, but it's habit doesn't discriminate between interveinial regions or veinial regions like Mg does. Your thoughts may come from the fact that N def is often associated with a Ca deficiency. This is usually due to the fact that N and Ca work hand in hand and if a plant wants more of one, it most likely wants more of one, it most likely wants more of another. There are also common relationships with K and Mg, which is why all 4 of these are very common(although K is more tolerable in excess, so less encounters of deficiency as it can build up).

@ GD - Sweet was most likely not your problem. I've had problems with Cal-Mag when ever I have used it. Check the PPM dosage right out of the bottle. It usually comes out 3 x strength. I've checked 3 bottles over 2 years and it is consistent. I have no idea why, and I talked to Botanicare, and they told me to go by the ppm, not the label instructions.

If you think it was the Mg though, prob not. Big Bud, which is an AN product, and I use it now, at 15ml/gal, ha 7% Mg. WAY more then sweet. I'm betting you flushed your rez though, right? That most likely solved your problem? Happens alot.

 

[Grat3fulh3ad]

Ca is an immobile element and deficiencies show up in new growth.

N P K and MG are all mobile elements and will show up in the older fans first.

 

[20kw dreams]

Key GH, you called it. Ca def usually doesn't show up on new growth though really, but more on developing growth, which is to say young leaves which are large, but still growing. Spotting develops as the leaves are growing.