Yellow patches on leaves

[Josch1992]

Hello Growing community!
we have a little issue here. We are in our last 2/3 weeks before harvest. The plant all looked very healthy until now. one of them begins to have yellow patches (as attached) on some of the leaves.
All the other ones look totally fine.
I wanted to know if that is normal towards the end or if it looks more like a disease?

set up:
- 5 plants (different strains but all taking the same time)
- 600W light.
- coco soil
- biological nutrient (bio bizz grow for vegging and bio buzz flower for flowering)

we haven't changed anything to the layout before this happened except that we might have used a bit too much water on the last watering but nothing else.

Let me know your thoughts and if you need anything else.

Josh

[alltatup]

Hello Josch and welcome to the forum!!! I'm still a newbie myself, but I looked up yellow leaf spots on the GWE website, and found this:

http://www.growweedeasy.com/yellow-leaf-spot-leaf-septoria

Hope that's not what it is; others on this forum my ask you to post a picture of the entire plant, but until they get their lazy butts up outta bed, read the attached article and see if it fits. If it doesn't, at least fungus is eliminated!!!!

[Weed Pharma]

A picture of the entire plant would be helpful- as the location of this will make the determination of it's importance.

[Josch1992]

So here are the other picture. We have cut the ones that were affected 2 days ago cleaned everything inside the chamber (not that is was dirty or anything) but the plant keeps on having the same issue. Maybe heat burn? But shouldn't that affect the other ones as well? (this is our largest plant actually)
what we would do otherwise is to cut it in 3 days and just let it dry from then on. Some of the trichromes are already milky. Still a bit early to cut it but in order not to loose the whole plant maybe this is the solution?
thanks for the help guys!

[alltatup]

I definitely don't know for sure, but are some of those buds brown? That might indicate bud rot from too much humidity...??? If you don't hear from anyone who knows better than I do, I recommend that you post again with a huge HELP in the title. I hope someone helps you soon so you don't lose your crop!!!

What IS the humidity in your tent? Do you have a fan circulating air?

[LuckyAcres]

(yawning....)Lazy butts out of bed...man gotta get my beauty rest, don't wanna scare my ladies when I walk in don't I !!! Alright, wassup here?
I can't see the other pics btw, not showing at all. Here's what I'd do from what I see off the original four pics. Remove as many "infected" looking leaves as possible. They're wasting energy and they're ugly. Those buds need more light anyways. All my fan leaves are gone at this point. Once gone you'll be able to tell better if it keeps on moving in. Next, those cut leaves, grab your x60 loupe and inspect them closely for bugs, underside especially. If nothing is found(bugs, their poop..) then move on to looking at your feeding schedule, ph all the usual suspects...if bug signs are found, identify the pest and get back to us.
or it could just be the end of its cycle and it's cannibalizing itself and sucking all the food it can. Sorry no such thing as straight answers round here! 😜

[alltatup]

Hey, I made the lazy butts comment on Sunday morning, and you're just getting up????? La vie en rose, Lucky!!!

[LuckyAcres]

You know it baby! Tous les jours!

[Weed Pharma]

When I look at the pics I see a couple of things going on-nutrient issues- especially Nitrogen toxicity- claws etc, too much water/ light and a plant trying to save itself at the end of life.
Is the issue only on the side of the plant facing the light?

Regardless if its that or anything else mentioned above- you are so close that a good practice would be;

reduce plant stress, (by environmental control)
proper water- reduce light- reduce temps and only use pHed water with no nutrients.

The plant will take a week or two to finish, giving it time to ripen.

[Josch1992]

Thanks guys for the swift help. Let me try to repost the pictures. We have a fan that circulates the humidity which is around 35-40% temperatures are around 25C
the weird thing is that it was one of the healthiest looking plants before all that and all of the sudden it turned like that, therefore I don't know if it could be a ph issue. I'll be looking at the leaves with our microscope. Maybe I'll find something but couldn't see anything moving until now. Last thing I was thinking is some kind of leave rottening because before all that happened the water which was in the pot stayed for a bit of time without movement. We cleaned everything at this point and watered with clean water again.
The issue is on the whole plant and not only one side. We will reduce plant stress as well.
And will try to make the end as smooth as possible for it to be cut soon!
thanks for all the replies!

[alltatup]

Hope everything cleans up, Josch!!! It would certainly be excellent to elminate pests and rot!!!

Are you checking the pH in and runoff?