Sudden Yellow Leaves in Buds from Bagseeds! Whatsup?

I

Ice-R

Member
I noticed today that i got one plant in my grow tent where the buds on the top of the plants are yellow (buds on the buttom seem ok). I looked back at some pictures i had made before and found this started (though very small) at the outer side of the leaves about a week ago as you can see in this picture

leaf problem June 2020.jpg

And a close up from the top of the bud

0.jpg

Some information:
  • Growtent 1m x 1m with 128 watt LED
  • 3 plants in soil (6l containers)
  • These are bagseeds so i have now idea about strain
  • seeded on 30-03-2020 and moved to flower 12/12 on 15-05-2020
  • Since then all 3 plants on 2ml biobizz topmax and 2ml biobizz bloom
  • Temperature last 2 weeks about 22º/25º C and 50% humidity (before that 10 days 25º/30º and 50 - 60 % humidity)
  • Airvent on 24/24 + ventilator

So as i am a 1st time grower have no experience, read a lot in the last months though and thought things like:

Light problem. As it seems to be the top buds but only one plant has this problem and all other plants are as close to the lights as this one (+/- 27 cm) so they should have the same problems

Nutrition: but then wouldn´t the whole plant have the problem.

Infestation: can´t see any but ok maybe they are invisible to the eye.

The thing is there seem to be so much different possible reasons and since i am in the final stage don´t want to f* up now.
Any help will be muuuuuuuuuuuch apreciated :)
 
I

Ice-R

Member
Here´s a Picture of Today, problem has definitely worsened since yesterday:

14_06_2020.JPG

Though i still don´t understand why the other 2 plants don´t have it the symptoms seem to point to light burn: only top leaves affected, yellowing over days and curling up. What do you guys think?
 
Bertalishas

Bertalishas

Active Member
Ice-R said:
I noticed today that i got one plant in my grow tent where the buds on the top of the plants are yellow (buds on the buttom seem ok). I looked back at some pictures i had made before and found this started (though very small) at the outer side of the leaves about a week ago as you can see in this picture

View attachment 4594151

And a close up from the top of the bud

View attachment 4594173

Some information:
  • Growtent 1m x 1m with 128 watt LED
  • 3 plants in soil (6l containers)
  • These are bagseeds so i have now idea about strain
  • seeded on 30-03-2020 and moved to flower 12/12 on 15-05-2020
  • Since then all 3 plants on 2ml biobizz topmax and 2ml biobizz bloom
  • Temperature last 2 weeks about 22º/25º C and 50% humidity (before that 10 days 25º/30º and 50 - 60 % humidity)
  • Airvent on 24/24 + ventilator

So as i am a 1st time grower have no experience, read a lot in the last months though and thought things like:

Light problem. As it seems to be the top buds but only one plant has this problem and all other plants are as close to the lights as this one (+/- 27 cm) so they should have the same problems

Nutrition: but then wouldn´t the whole plant have the problem.

Infestation: can´t see any but ok maybe they are invisible to the eye.

The thing is there seem to be so much different possible reasons and since i am in the final stage don´t want to f* up now.
Any help will be muuuuuuuuuuuch apreciated :)
Click to expand...
I would say it’s probably Nute burn, I would dial it back on the nutrients
 
C

CannaCountry

Well-Known Member
Peel your flower apart and be sure you don't have the beginnings of rot, otherwise, if it's a deficiency, it's minor and trying to fix it this late in flower will most likely not go well.
 
J

JoeRogan420

Well-Known Member
i would probably just leave it as well, it could be late stage flower where the plant is eating the leaves before it dies
 
I

Ice-R

Member
Here´s a picture of today, 15 June (have moved lights up since yesterday just to be on the sure side) still looks a bit worse than yesterday:

IMG_2714.JPG

CannaCountry said:
Peel your flower apart and be sure you don't have the beginnings of rot, otherwise, if it's a deficiency, it's minor and trying to fix it this late in flower will most likely not go well.
Click to expand...
How would i know its rot if i peel the flower apart (any links with info?) and could this jump over to the other 2 plants (at the moment they show no signs)?

Also you mention "this late in flower" how close do you think i am?

JoeRogan420 said:
i would probably just leave it as well, it could be late stage flower where the plant is eating the leaves before it dies
Click to expand...
Same question: how close do guys think i am? i am asking also because the biggest bud, the one in the picture is only 8cm.
 
J

JoeRogan420

Well-Known Member
Ice-R said:
He
Click to expand...
you should try and get a microscope thats the right zoom for checking inside the crystals, google how to check and do some research

research the strain and look the info you find on it and other peoples experiences bro. also keep growin same strain to get used to its genetics how much nutes it can hold all that stuff, how long u need to veg for and how long flowers take, should be able to remain consistent if u use a mother and the clones over and over and then u will know exactly whats going to happen along with yield
 
I

Ice-R

Member
After removing the affected leaves this is what it looks like on the stem underneath (first picture with flash, second and third without but led light shining on the spot)

I am no expert but this does seem like some rot in there to me, what u think? To be on the sure side i removed all the apparant effected buds (am watercuring them as i understood this will make them ok for smoking).

Do you guys think thats enough or should i remove all plant?

IMG_2727.JPG
IMG_2728.JPG
IMG_2729.JPG
 
budman111

budman111

Well-Known Member
Carefully remove the rotten bud rot and try no to spread it about, get better airflow which is the problem here.
 
C

CannaCountry

Well-Known Member
Ice-R said:
Here´s a picture of today, 15 June (have moved lights up since yesterday just to be on the sure side) still looks a bit worse than yesterday:

View attachment 4595940



How would i know its rot if i peel the flower apart (any links with info?) and could this jump over to the other 2 plants (at the moment they show no signs)?

Also you mention "this late in flower" how close do you think i am?



Same question: how close do guys think i am? i am asking also because the biggest bud, the one in the picture is only 8cm.
Click to expand...
Just do as suggested, snip that bud off, and don't be too conservative. You'll want to get all the affected material out of your room. Keep an eye on your temps and humidity and now that you know what to look for, keep an eye out for any more issues. I have no idea as to when your plant will be finished, largely because it's not in front of me and I don't know its history; that's something you'll need to determine. Either way I'd say you're not too far off. Good luck.
 
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