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Brown spots on leaves, yellowing, 5 weeks in 12/12?

getbuck

getbuck

Member
Hi guys,

5,5 weeks in 12/12. One of my kosher kush's is showing
a few weird brown spots on its leaves as can be seen here:
https://i.imgur.com/CvqRWaT.jpg
https://i.imgur.com/mxUqKle.jpg
https://i.imgur.com/iG48pF7.jpg

The lowermost leaf looks like this:
https://i.imgur.com/ic7Dr2C.jpg

My only bubblegum is slowly yellowing on the lower leaves,
is this normal N def at this stage (5,5 weeks 12/12, should be ~7,5-8 week strain), also showing this:
https://i.imgur.com/sY2CWGe.jpg
https://i.imgur.com/DT5CTgF.jpg

Tent is a 4x4 with a 600W HPS+cooltube, growing in biobizz allmix soil with biobloom + biogrow and some seaweed extract. 3 gal pots. Feeding them every 2-3 days with 1-1.2 litres. Minimal to no runoff (biobizz recommendations).
 
getbuck

getbuck

Member
RH is around 35-45% and temps are a little on the high side at the tops during lights on (80-85F / 27C-30C) but otherwise fine in the tent.
 
D

DWCC

Member
The def of the lower or better lowest leaf of the plant, the almost first real leafs, is normal, yes.

You should post a pic of the whole plant
 
the gnome

the gnome

Active member
Veteran
any plants been outdoors?
it *sort of* resembles early symptoms of a fungus i had last year,
leaf septoria or leaf spot.

starts at the lower -mid section leaves of the plant.
spots of varying size and shape on leaf appear and the leaves begin to yellow/die on the mid-bottom of the plant.

like i said, it resembles the early symptoms.
unfortunately I was only sure later when the leaves were dying and someone told me what it was.
actinovate is a biological fungicide i used to treat
http://thc420net.tumblr.com/page/3
 
getbuck

getbuck

Member
Ok the problem has gotten a bit worse. Now two of the koshers are showing these symptoms.

The plants got a little underwatered and went very dry, could this issue be related to that, because it got worse as they went dry? The patches are VERY dry and feel brittle to the touch. Is this a defiency or something else? Help a grower out! This is now week 6 of 12/12. Trying to upload pics now...
 
getbuck

getbuck

Member
A friend suggested that this might be phosporus def..anyone else seeing this? I noticed a few leaf tips showing similar symptoms in the middle/upper part of one plant.. is there anything i can do or do i just keep feeding them and try to make it till harvest?
 
R

raphenilweed

Member
It is difficult to see with the yellow HPS glow. Try white balancing your camera or take the picture with the lights off. The misshapen leaf in the image https://anonimag.es/i/7fcca4ad99f870bd8a1291b2034f2469.jpg that looks like a bug bit it and the downward "I need to be watered but I just got watered" look is a good sign of 2 possible things. Broad Mites or mosaic virus. But again it is difficult to see with the yellow glow of the HPS. With the rapid state of legalization it is easier to send to lab and get a deficiency test. Guaranteed results vs. a vague description and bunch of stoned ass-hats on the internet.
The first thing I would do is thoroughly inspect the worst looking leaves with a 60x-200x magnification scope and if you don't see any critters, eggs or poop then you dont have them. Again its probably easier to send to a lab and get a leaf tissue nutrient test.
 
getbuck

getbuck

Member
Kosher Kush:

https://anonimag.es/image/LPd
https://anonimag.es/image/LPl
https://anonimag.es/image/LPS
https://anonimag.es/image/LPr
https://anonimag.es/image/LPT
https://anonimag.es/image/LPy
https://anonimag.es/image/LP2
https://anonimag.es/image/LP4

Bubblegum:

https://anonimag.es/image/LPx
https://anonimag.es/image/LP7
https://anonimag.es/image/LPI
https://anonimag.es/image/LPR


The bubblegum yellowing looks to me like a normal N def as she is approaching harvest time, yes? It is supposed to be 8-8,5 week strain and shes been under 12/12 for 6 weeks now, starting 7th today.

Hairs are slowly turning red on all of the plants and they are getting frosty, so looks to me as flowering is still happening quite well?

What would you guys do in this situation? Could the problems with the Kosher's be just a natural part of the flowering cycle ie. showing different defs as they are consuming the nutrients from the leaves? This is my first serious indoor + organic grow so I'm a bit paranoid maybe...
 
getbuck

getbuck

Member
I'd love to live in an area where I could send samples to labs, not possible at this time though. We have never had broad mites here + the plants are from seed not clones. If it were pests, I would assume that the symptoms would be showing on all the leaves and plants? Bubblegum is free of the issues that the Koshers are currently dealing with.
 
G

Grøn

Member
Dude up the RH and feed stronger or decrease the time there is between water-feed intervals.

Why not try n foliar a grow fertiliser at mild dilution rate, add some trace elements.

Still maby do that leaf test just to get the numbers so you guesstimate what might be the problem.. leaf sap combined with info on feeding PPM values make the most sence =)
 
M

maimunji

Active member
Looks like pk def. Hit them hard. Its better to leave plants to develop buds little longer more than 10 week. This will give em little more yeild because from what I see you will be happy if you hit oz per plant. If yeild isn't problem leave them to finish and enjoy to smoke.
 
PoweredByLove

PoweredByLove

Most Loved
your kosher kush has a little too much nitrogen and needs more phos and mag.

the bubblegum is hungry, needs more mag and nitrogen.


give both epsom salt 1tsp per gallon and wait a couple of days. if the bubblegum keeps getting more yellow spreading upward then add more nitrogen to the next feeding. like 25-50% more. just the one time. maybe 2 feedings. after the stretch is over you can switch back to minimal feeding nitrogen.
 
M

maimunji

Active member
PoweredByHaters said:
your kosher kush has a little too much nitrogen and needs more phos and mag.

the bubblegum is hungry, needs more mag and nitrogen.


give both epsom salt 1tsp per gallon and wait a couple of days. if the bubblegum keeps getting more yellow spreading upward then add more nitrogen to the next feeding. like 25-50% more. just the one time. maybe 2 feedings. after the stretch is over you can switch back to minimal feeding nitrogen.
Click to expand...

I think this guy say this plants is in 7 week in to flowering. Stretch is over long times ago. At this point i cant see how adding more N will help. Don't espect improves for this leaves they never greener back and will continue to dyes slowly thats normal. Give em pk to help buds putting on yield.
 
Last edited:
getbuck

getbuck

Member
maimunji said:
I think this guy say this plants is in 7 week in to flowering. Stretch is over long times ago. At this point i cant see how adding more N will help. Don't espect improves for this leaves they never greener back and will continue to dyes slowly thats normal. Give em pk to help buds putting on yield.
Click to expand...

Yeah they are 7 weeks in 12/12. Whats your take on the epsom advice? I've heard that some folk encounter MG problems with biobizz products (I'm using biogrow 1ml + biobloom 3,5ml every watering, only little runoff, about 1.2 litres per 3gal (11L) pot, biobizz's recommendations).

If I decide to give a shot of epsom, do I just mix it with my normal nutes, or give it like a "epsom flush" with just the epsom+water? Is there a danger of magnesium OD if they are now deficit of it?

I think I'll up my bloom to 4ml now which is the maximum that they recommend for the last few weeks. So you guys think that those spots and necrosis is a sign of PK and maybe magnesium deficiency?
 
getbuck

getbuck

Member
Just gave the girls a VERY CAREFUL foliar feeding with 1 tps of epsom mixed with 1 US gallon of water. Are we talking about teaspoon or tablespoons when you guys say tps? A US teaspoon is about 5 grams of epsom, and thats what I used. Going to mix my nutes to the epsom infused water when I feed them tomorrow, also bumping up the biobloom to 4ml / L.
 
PoweredByLove

PoweredByLove

Most Loved
maimunji said:
I think this guy say this plants is in 7 week in to flowering. Stretch is over long times ago. At this point i cant see how adding more N will help. Don't espect improves for this leaves they never greener back and will continue to dyes slowly thats normal. Give em pk to help buds putting on yield.
Click to expand...

some plants stretch till the end...

anyway you take my words too literal (and the term "stretch" which has no definite begin and end date), what's clear is that his plants are still building flowers and he's running out of magnesium and phosphorous and possibly nitrogen. can't tell with all the mag def in the way. but once you clear up the mag def the rest will either go away too or you will see that it's still hungry. i advised he fed it a little bit and not too much because he's gonna be flushing soon anyway and you don't want too much nitrogen towards the end of flower as it causes plants to start growing more green and leaves sometimes instead of continuing to build flowers.

anyway that's my 2 cents based on the evidence presented. he could alternatively continue to feed his plants at their current rate till the end of flower. it wont hurt much but the yield. the most of the work of the "flowering" is about wrapping up anyway.:2cents::tiphat:
 
getbuck

getbuck

Member
PoweredByHaters said:
some plants stretch till the end...

anyway you take my words too literal (and the term "stretch" which has no definite begin and end date), what's clear is that his plants are still building flowers and he's running out of magnesium and phosphorous and possibly nitrogen. can't tell with all the mag def in the way. but once you clear up the mag def the rest will either go away too or you will see that it's still hungry. i advised he fed it a little bit and not too much because he's gonna be flushing soon anyway and you don't want too much nitrogen towards the end of flower as it causes plants to start growing more green and leaves sometimes instead of continuing to build flowers.

anyway that's my 2 cents based on the evidence presented. he could alternatively continue to feed his plants at their current rate till the end of flower. it wont hurt much but the yield. the most of the work of the "flowering" is about wrapping up anyway.:2cents::tiphat:
Click to expand...

Any advice on the epsom feeding? Mix it with nutes or just plain water+epsom?
 
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