Yellowing fans - bottom then top

[smokeyfromau]

Problem:
Yellowing fans, little tip burn also, most the other girls a bit of yellowing also. When i water, each time i use nutrients, this may be the problem but i only do small amounts

Medium/grow method:

Searles Advanced Premium Potting mix (link below), with some perlite
https://www.searlesgardening.com.au/searles-premium-advanced-potting-mix

Feed: and supplements used:
PowerFeed NPK and Canna 13/14

water source:
Tap water

Strain/age:
Auto Girl Scout Cookies - Week 10

Climate:
Days around 20 -26c
Nights around 5 - 10c
Girls undercover at night

 

[Waira]

-- Nights that cool will retard nutrient uptake and transport, so that's part of the problem... micronutes and P are what usually show first, though this girl has a mixed set of symptoms,...looks mostly like S defc. though, overall yellowing with uppers worst (S is immobile within the plant).... it's also why at 10 weeks she's still not done and a ways out still,...
>> how many hours of light?
>> nutes, I need dosage, frequency and NPK#'s,.... with the poor uptake and utilization, they could be building up in the soil causing the tip burn,...
>> what's on the surface of the pots Smokey?

.... start by trying to keep her warmer at night, above 15C... then lets see how she responds .. lay off feeds for a few days or so meantime....

 

[smokeyfromau]

-- Nights that cool will retard nutrient uptake and transport, so that's part of the problem... micronutes and P are what usually show first, though this girl has a mixed set of symptoms,...looks mostly like S defc. though, overall yellowing with uppers worst (S is immobile within the plant).... it's also why at 10 weeks she's still not done and a ways out still,...
>> how many hours of light?
>> nutes, I need dosage, frequency and NPK#'s,.... with the poor uptake and utilization, they could be building up in the soil causing the tip burn,...
>> what's on the surface of the pots Smokey?

.... start by trying to keep her warmer at night, above 15C... then lets see how she responds .. lay off feeds for a few days or so meantime....

Thanks Waira

When the girls started out ( not sure but younger) silly me thought the flying insects on the mulch were nice, they were gnants so a few waterings with neem oil, now i see a few gnants maybe 1 or 2, the surface is sand to keep them from diving down into the soil.

example of nutes last 2 weeks
W9 - 4ml canna 13/14, and same with previous week plus small amount of a cap estimate 1ml NPK Power feed. (wednesday), then the next water that week 6ml canna bit of npk powerfeed, so maybe thats the issue nutes each water about twice a week? Powerfeed from memory is 9.5N 1.3P and K 7.5%

Sun in the mornings, its strong sun about 6 - 7 hours direct then its a struggle to get the last bits of sun, but maybe for autos that is okay?

Move her in and watch her, he sisters are undercover at night with shade mesh around them and against the bridge wall that gets weak afternoon light, so is slightly warm the cement and bricks.

What is S mate?

This morning girls will have water with worm piss(scant amount) ( since base of pot holes seem damp - i give them about 3 days between waterings

 

[Waira]

:smoking: S= Sulfur, or in the nute world sulfate SO4--.... epsoms salts are a good source, MgSO4; can be soil treated and /or a foliar spray, fastest way into the plant! Soil dosage- 1tsp/L, half that for foliar... foliar works best with a wetting agent, which help it coat and stick more evenly, not just bead up, and spray bottoms of leaves in particular, more stomata there, and that's the only way in on leaves,....castile soap will do in a pinch, use just enough to make the spray not bead up, like 1/2tsp/L,... test that out and see....
Roger that on the gnats! If you can get them, mosquito bits/dunks made into a simple tea will kill the larvae, which are the problem causers, not the adults which are little more than flying gonads- They have a bacteria (Bt) in them that infects their guts and kils them.... gnats are close relative to 'squiters, so that's why it works,.. there is another Bt strain, active against caterpillars only, so keep that in mind....
More light would be better, but you got what you got,... the kingpin here is the low T mate, all else hinges off that... as mentioned, you may have some build-up in the soil now, because it just wasn't getting used very quickly,... is she worsening? I don;t expect much correction at this late stage, but slowing the progression and keeping the nutes flowing into her for good budding is the ticket!
I saw you have ALR in your House - great guy, a Dutch Passion grow Master, did you know that? Dude is a wizard!

 

[smokeyfromau]

Thanks Waira mate !
Kinda looking about the same, fans dying, maybe nearing the end by now I think also. Think its worth doing her leaves with epsom salts now? She is not worse nor better, still better than the rougher looking SLH, who has thrips, as this stage i cant use neem on the bug, so i will pick the little pricks off with twizzors

Flying gonads, more light splat gonads on the edge of the pots, i think closest thing here might be the yates with Bt, but a more gnat killer is the Bti

Girls only getting water and a tiny bit of potash, and every 4th day for water at this time of year. I will start next lot of girls under lights for the first 3 weeks, and then rely on the sun, now wished i lived on the hill but then again least is cooler down here in summer


Didnt realise ALR was a pro grower, but he's an awesome dude

 

[Waira]

no foliar mate, just a wee dash of epsoms (1/4tsp/L), if she's still up and has a week to go... S figures largely in terpene production, as does K and Mn....

 

[smokeyfromau]

Thanks Waira mate, yes maybe 1 week or so, left so some S for the girl and her sisters would not go astray

 

[Waira]

just make sure she has at least a few days of clear water to cleanse (flush) out the "pipes"...

 

[smokeyfromau]

Thanks Waira mate, she has had epsom salts, well they all did 1/2 teaspoon with their usual watering can, must be near the end some amber with the girls