Nitrogen deficiency

WakeBake

Well-Known Member
Make sure it is a deficiency and not a Nitrogen blockage. If former then Add Nitrogen (N) rich nutes, if latter then add N fixing bacteria like humic acid
 

DJK 81

Active Member
Make sure it is a deficiency and not a Nitrogen blockage. If former then Add Nitrogen (N) rich nutes, if latter then add N fixing bacteria like humic acid
 

Attachments

WakeBake

Well-Known Member
These spots look like plant leaf spot fungus.

You gotta remove these brown spotted leaves and discard them
 

CheGueVapo

Well-Known Member
At this stage you wont fight nitrogene deciency for the hole plant as it needs phosphorus and potassium the most.
Maybe you could spray only the specific leafs, especially the bottom, with some available nitrogene.
Take care only to spray the leafs, not the buds. This might repair the defiencies specifically targeted only in them, not the buds.

If you feed with nitrogene now they build up more leafs in the buds, thats usually what we dont want, as it makes your buds greener with more chlorophyll.

I dont see fungal infection, but some leaf-chlorosis. That is feed to potential fungus if it continues... right, take care! Remoove the bad leafs. Usually the plant gives it away easy, they fell easy off when moved, weakened... take those off. They are not greatly aiding the growth whatsoever that extremely damaged (some I see, not much).

pic1: OK
pic2: remove that leaf ... this could be THRIPS... the shining silvery sluggish, or mildew, i dont know... CHECK deeper
pic3: remove only that bad leaf-finger with a scissor, (or "clean" fingernails clip ;) )
pic4: i see one or two deeply yellowed, take only those.
pic5: OK
pic6: i guess i see the leaf from pic2 barely behind front bud, that i would take off.
pic7: OK, just a chlorosis spot... take the leaf only if the spot "grows"
pic8: its simply the same picture than pic4, look carefully ;)
pic9: i see at least one leaf that i would pic... btw its pic 6 again... just the same pic.

Its not that like little chloris is big danger... you should not kill the hole leaf for some spots while it still is healthy and operates good. But keep an eye on it, if the spots seem to "live" and keep "growing" thats a fungus infesting, sure take it.

Any other maybe try some nitrogene solution carefully spraying at their stomatas. But imnot sure it really is nitrogene defiency, so I dont recommend that just like that!

BTW: Thrips usually ran around the bottom sides of the leafs, if they are causing them, you find thm there... they lay their eggs the beginning end of the leaf-fingers, tiny tiny small black dots, the young are tiny tiny white dots, and the adult are a little bigger but still tiny. They show up the upper sides, you might think its just some dustdirt... but come close to them or touch the leaf, and they start running for hiding on the back again, you can easily kill one with your finger just touching it, smash it, but you dont get rid of them this way :D... and they can FLY, but you dont see or recognise that. You think it's dust, so small they are. But they can grow fast and they are hell of to get rid.
 
Last edited:

CheGueVapo

Well-Known Member
bg_3590fde39343b19344d1852c40d08084.png
thrips-cannabis.jpg

This differs from mildew ;) Make sure what it is. I cant see it.

Check the leaf from Pic2! Whats that... check the down side, any hint?

If it is thrips.... dont overract with pumping chemicals or something to your buds. Finish it... take of infested leafs to slow them growing population. After the harvest.... take a long pause and clean everything well! Check your houseplants, if neccessary remove any infestation of them!Desinfect surfaces and PAUSE long enough! Hypochlorites can work on the plants and any surfaces, not killing the plants, only the eggs of them. Sometimes they lay there eggs everywhere walls, fans, corners, edges of the groom.... and those wait for the right conditions, humidity before they popp up... they are really sneaky! They can get through insect filter inlet-air!
 
Last edited:

DJK 81

Active Member
At this stage you wont fight nitrogene deciency for the hole plant as it needs phosphorus and potassium the most.
Maybe you could spray only the specific leafs, especially the bottom, with some available nitrogene.
Take care only to spray the leafs, not the buds. This might repair the defiencies specifically targeted only in them, not the buds.

If you feed with nitrogene now they build up more leafs in the buds, thats usually what we dont want, as it makes your buds greener with more chlorophyll.

I dont see fungal infection, but some leaf-chlorosis. That is feed to potential fungus if it continues... right, take care! Remoove the bad leafs. Usually the plant gives it away easy, they fell easy off when moved, weakened... take those off. They are not greatly aiding the growth whatsoever that extremely damaged (some I see, not much).

pic1: OK
pic2: remove that leaf ... this could be THRIPS... the shining silvery sluggish, or mildew, i dont know... CHECK deeper
pic3: remove only that bad leaf-finger with a scissor, (or "clean" fingernails clip ;) )
pic4: i see one or two deeply yellowed, take only those.
pic5: OK
pic6: i guess i see the leaf from pic2 barely behind front bud, that i would take off.
pic7: OK, just a chlorosis spot... take the leaf only if the spot "grows"
pic8: its simply the same picture than pic4, look carefully ;)
pic9: i see at least one leaf that i would pic... btw its pic 6 again... just the same pic.

Its not that like little chloris is big danger... you should not kill the hole leaf for some spots while it still is healthy and operates good. But keep an eye on it, if the spots seem to "live" and keep "growing" thats a fungus infesting, sure take it.

Any other maybe try some nitrogene solution carefully spraying at their stomatas. But imnot sure it really is nitrogene defiency, so I dont recommend that just like that!
Hi, Thank you very much for your detailed response I really appreciate it….
This is my first ever grow and I really have no idea what I’m doing.
will take you advice on board, and look into a solution.
Do you think they’ll be ok until harvest? Its day 48, are we to far in to change results?
 

DJK 81

Active Member
Hi, Thank you very much for your detailed response I really appreciate it….
This is my first ever grow and I really have no idea what I’m doing.
will take you advice on board, and look into a solution.
Do you think they’ll be ok until harvest? Its day 48, are we to far in to change results?
And yellow tipped leaves
 

CheGueVapo

Well-Known Member
If you have good eyes on inspection, you find them thripse running trying to hide from you... ;=) They are pretty shy, sometimes it's like they freeze and the moment you discover them with eyes and go closer, they feel it and run, when you near the finger the finally run if they not recognised you until that before! lol, they are pretty fearsome and on their toes. But if you not find them, it's something different. Look out.
 

CheGueVapo

Well-Known Member
In fact, when you manage a high daily growth rate through high DLI and good growing skills, you can have them and let them have their small share on some lower low lighted leafs, not noticing them at all.

They get problematic if you have slow growth rate and they have higher, and not do anything against them, noticing them too late.

It's kind of natures own weapon of mass destruction. ;) As long as you keep growing faster plants then them population growing, and remove those infested leafs regularly repeatingly.... they dont accelerate their popolation growth exponentially anymore, and that's when you have them just under control, because you focus your plants exponentially growth rates, that what we growers do... and dont give a fuck about them anymore, trying to get ridd of them is really hard! Controlling them can be easy at high growth rates of the plants, just dont worry so much.
 

CheGueVapo

Well-Known Member
Maybe that helps you to identify and fight them.

I dont recommend spraying this shits on the plants.... only the surfaces of the grow chamber maybe, then after cleaning that shit with water off again.

Like i said... they dont pick the top leafs canopy, they are down in the shadow where its humid and not so hot.... so just grow faster and control them not growing exponentially, by removing them infested leafs from time to time... that simply takes out a lot of adults, larvae and eggs... so controls their population. Dont worry SO much! Please dont use this sprays for your own sake and safety on the plants!

The safest way getting rid of them is after the grow... clean and desinfect the surfaces of the grow chamber... and pause grow long enough for wiping them every single out! Otherwise, they keep oncoming back, and they may come from outside where you live just through your window again and again.... most LIKELY! They are everywhere in nature! Unless you filter your places inlet air (windows) to not let those tiny beeings in, they going to come again whatsoever. So its endless fight! Dont worry so much... grow faster than them, take out the high populated leafs, and if you see a chance to smash one by gently touching the leaf, DO IT, squeeze them, hunt them down, saying "you little motherfucker, gotcha", like Samuel L. Jackson would say! ;)

Edit: Haha you high likely inhaled thousands of them in your lifetime already, caughing them out, not even noticing ;) We're used to it.
 
Last edited:

CheGueVapo

Well-Known Member
Look what the view out of my window says:
A.jpgB.jpg
There is the source for them! I recognized that!

I can never get rid of them, its pointless, I spare the effort, I cant win.... they are everywhere around me... so I gave that up. Just intesified my grow and dont care about them lots. It's cannabis, it's THE fastest growing weed in the world. If these plants outside my window can grow and live with them, just grow new leaves every year.... than my 70days grow gets through too without a problem, everytime.

These just beeing there, but not beeing a problem to me.


Edit: I post some pics later to show you that i got them too... and what it matters ;)
 
Last edited:

CheGueVapo

Well-Known Member
I found them on my tomatoe-plants too...
I was so worried they infested them early... i smashed some, all i found, didn't sprayed.
The early leaves look this today: There is one, i circled it!
tomatoe (1).jpg
Look close... it is just sucking the leaf and making another "spot" of sluggish silver/white. I smashed it :) They are softer like a yellybean, you gently tip it, and its dead. Thats why they RUN... :D

They popolate a lot, but each generation takes some time to cycle from egg, through larvae and adult. Time is on your side! So managing them before they reproduce is easiest.... kill some adults, take out some infested leafs with lots eggs and larvae... and with that you slow them down greatly, giving your plants the chance to nevermind and grow a lot faster than them.

Blue lime charts help too, they like blue surfaces...

But.... look where the growth got at 3 weeks later.... they dont mind them a lot, because the plants exponential growth rate is higher. In fact in guess it triggers their defenses.

tomatoe (2).jpg

Its just tomatoe.... behind a window.... still it dont mind them. Nothings wrong here... grows well!
Still those have infestion too... see the white dots, look carefully.
They are just growing faster. Dont panic, it's organic :D


BTW: Thats why some people spray the lesser doubtful substances, ie neem with veg-oil, that are allowed for organic farming, in the vegetational phase...once...far before intruducing the flowering.. to kill any unnoticed starting populations of those, or reduce them, to not face them so fast.... because you see the damage only after a lot generations and high counts.... i think thats OK, it's called 'prophylaxis', as long as you not spray the flowers in the flowering state with it.... there wont be any reasonable amounts of what you sprayed in the buds.
 
Last edited:
Top