Issue with ONE plant in my grow

Greensome

Member
Hey folks, I currently have the following set up;

600w hps
Vganics Go Box nutrient line
3 gallon soil pots with FFOF
9 plants of varying strains in week 5, Afghan Kush in question.
T 80 RH 50% exactly
moving >2000CFM in a 30ft2 space

The AK looks starkly different from anything else I have. It always has, even from barely rooted clone until now. For some reason, this plant has always seemed to have an issue with dying leaves. Never very many mind you, just one at a time long after the plant was 4 weeks into veg. As flowering began, foliage death increased, but not alarmingly so. However, over the last week, ALL of the leaves on the plant have what appear to be burnt dark yellow tips, which are hard and break off at the touch. Even the sugar leaves on the flowers are displaying this trait.

I have done the following;

Checked Ph - the water Ph from my well is sometimes pretty high. 7.0 is the average, but I've seen it hit 8.0. It is NEVER out of this range. Soil Ph measured in at 7.0 which seemed rather high for my liking, but surprise surprise runoff is 6.3.

Flushing - the AK was flushed with 8 gallons of water. The slightly yellowish runoff began to clear. The plant sat overnight, and the following morning received all usual flowering nutes, along with a small dose of mycorrhiza, and Hormex vitamin B. Only enough water was added to have but a few drops of runoff, this is also remember, after flushing. These plants typically only ever get the Vganics line and mycorrhiza in veg at either recommended concentrations or 10% above manufacturer's scheduling.

Bacilius phylogeny based antifungal (conglomerate) was applied sparingly in a test area. A small side branch was sprayed both on an affected area and directly on a flower. The flower showed deterioration during the next 48 hours and the miscolored and crusty leaf was not affected. 100x magnification of the affected areas reveals what appears to be a spore based structure, however the spacing of the suspected round spores was evenly distributed, ruling out fungal based infections. The tiny branch was removed.

Observation - There is only one AK in this group, and it is the only plant displaying this trait. Every other plant is extremely robust and healthy. The AK despite the discoloration, is also extremely healthy. In a group of 9, it is the only one you smell. The colas are rather thin but extremely compact. The resin is so thick that I can see that the trichomes are clear, because I can see patches here and there of cloudy ones. It is for all practical purposes, doing stellar. I'd hate for some creeping crud to cut her down early.
 

Greensome

Member
It's next to impossible to nute burn with the Vganics line as it's not mineral based. Because the grow is otherwise organic, I posted this in the organic section as the issue has been narrowed down to that context.
 

May11th

Well-Known Member
No I believe your wrong sir. The plants at 5 weeks have plenty to eat in that soil ran it and you prob have nute burn , just use straight water and foliage feed w a aloe mix. Jmo
 

Greensome

Member
No I believe your wrong sir. The plants at 5 weeks have plenty to eat in that soil ran it and you prob have nute burn , just use straight water and foliage feed w a aloe mix. Jmo

I can't really foliage feed at this point unless I get the feed all over these gooey flowers which probably isn't a good thing.
Nute burn from the soil itself 5 weeks into flower would mean that if one used FFOF they'd never have to fertilize.

The plant is 5 weeks into flower, not 5 weeks old.

Nute burn comes from mineral based fertilizers usually in the form of salt buildup. The fert I use is not mineral based and does not build up like that.
Please read above; plant has already been flushed clean and problem persists.

I'm leaning towards this being a genetic defect due to interbreeding. This particular plant I know has lineage from an area where there was incessant inbreeding.
Everything else in my grow seems fine. All other plants in the identical situation are doing fantastic. I honestly can't think of anything to do at this point as I've gone through every possible scenario that I personally know of.

Really hope this girl pulls through, she is more gooey than anything else I've grown.
 

sadj

Active Member
also if your fertiliser contains npk then salt build up is possible also im sure potassium is a mineral if they all arnt minerals
 

Nizza

Well-Known Member
sounds like too much bloom food.
http://www.marijuanagrowing.eu/ak47-grow-week-start-harvest-t38253-100.html
looking here this guy doesn't seem to have that prob til week 9 with the fan leaves, could be lack of N. Could I see some pictures? You say you're giving flowering nutes, it's most likely this one is flowering heavier than the rest and N is very essential in flowering, you def dont want to be stingy.
maybe try just adding double the veg food and half or so of the bloom food (depending on ratios), possibly a touch of cal-mag to help with the budding.
 

Wetdog

Well-Known Member
I'm leaning towards this being a genetic defect due to interbreeding. This particular plant I know has lineage from an area where there was incessant inbreeding.
Everything else in my grow seems fine. All other plants in the identical situation are doing fantastic. I honestly can't think of anything to do at this point as I've gone through every possible scenario that I personally know of.

Really hope this girl pulls through, she is more gooey than anything else I've grown.
Could be the genetics along with your situation.

I run into the same thing with different veggie hybrids every now and then. Can't get them to work for me no matter what I do, but they work fine for others in other locations.

Just move on, or go crazy trying to figure it out. Especially when everything else is doing so well. It's the plant, not you, or all would not be doing well.

Wet
 

Greensome

Member
Could be the genetics along with your situation.

I run into the same thing with different veggie hybrids every now and then. Can't get them to work for me no matter what I do, but they work fine for others in other locations.

Just move on, or go crazy trying to figure it out. Especially when everything else is doing so well. It's the plant, not you, or all would not be doing well.

Wet

You know what? I'm going with this. Drive yourself crazy trying to figure out... that's what I'm doing and it's not fun. I'll just let it roll. I do have to move some plants around today and feed so I'll snap some pics while it's not under the hps later.
 

Greensome

Member
sounds like too much bloom food.
http://www.marijuanagrowing.eu/ak47-grow-week-start-harvest-t38253-100.html
looking here this guy doesn't seem to have that prob til week 9 with the fan leaves, could be lack of N. Could I see some pictures? You say you're giving flowering nutes, it's most likely this one is flowering heavier than the rest and N is very essential in flowering, you def dont want to be stingy.
maybe try just adding double the veg food and half or so of the bloom food (depending on ratios), possibly a touch of cal-mag to help with the budding.
Cal-mag, bio bud, and bloom nutrients are used in amounts recommended by the manufacturer. My line of nutrients has specific scheduling week by week with a slightly changing schedule.
These plants have not received veg nutes in almost 6 weeks, and there is no point in the future with this plant that I should be adding veg nutes once flowering has begun (with this line of nutes). What I will do is feed the AK a little heavy today based on your suggestion.
 

Wetdog

Well-Known Member
Greensome;9641463 Here is a view of the plant from the side. Apart from the leaf discoloration at the tips said:
With buds and growth like that, I damn sure wouldn't be stressing over the leaf tips.

I tend to agree with the genetic bit and it's just a growth characteristic of the plant. I wouldn't change anything AFA your regime this grow.

If you feel like it, play with it some next grow, if you run it again, or not. If it ain't broke ........

Wet
 

OneStonedPony

Well-Known Member
IMHO it has burn tips, from a combination of ph issues and being slightly overfed. This can happen in organics when the micro life in the medium is too abundant, making too many nutrients available to the plant, and shifting the ph rapidly over a matter of days. Honestly, the easiest way to correct it, is a quart of hydrogen peroxide from the Dollar Store. Mix it 1 to 1 with chlorinated water, and pour it into your medium, while the medium is still somewhat moist. Some runoff should occur but not much is needed. Then a few days later, take a tablespoon of soil from one of your other plants pot's that's healthy, and topdress it. That will calm things down, and allow the micro life to recover (but not too quickly).
 
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