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Possibly Nitrogen but I've been wrong before.


latitude54

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Strain: Godfather

Grow type: seed 

Age: day 27 of flower

Medium: Clover

Light: 600w HPS

Temp: 25-28ºc

RH: 40%

Watering schedule: 2L every other day

Nutes: Intense Bloom

Adjustments: 1/4 tsp epsom salts in each feed

 

I have 4 plants in a scrog and one of them has been noticeably smaller than the rest for some time. I noticed last night that this smaller plant is showing signs of a deficiency which (searching online) looks to be a nitrogen deficiency. It seems odd that it's only this plant that has this issue and the other 3 seem happy and healthy. That being said, they were all grown from seed so there's a good chance of different phenos playing a part. 

 

The only other thing to mention is that this plant sits in front of the fan that's circulating air below the canopy. 
 

large.sick1.jpg

 

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58 minutes ago, latitude54 said:

this plant sits in front of the fan that's circulating air below the canopy

Could be low temp at that spot, 

can you point the fan away from it a wee bit? 

 

Atb 

 

 

 

:yinyang:

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I was gonna say mg def what with the red leaf stalk and yellowing between veins but i see your already giving epsom.

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2 hours ago, MindSoup said:

Which leaves started going south first? Top leaves, bottom leaves or leaves closest to the fan? 

 

Bottom leaves but not necessarily just the ones closest to the fan. The one in the picture was plucked from the middle of the scrog net.  

 

 

1 hour ago, Shumroom said:

Could be low temp at that spot, 

can you point the fan away from it a wee bit? 

 

It's a bit difficult as its right in a corner and oscolates. I can certainly turn the fan down though or just stop it oscillating. 

 

 

1 hour ago, RUFUS HOUND said:

I was gonna say mg def what with the red leaf stalk and yellowing between veins but i see your already giving epsom.

 

My epsom salt calculation and delivery is far from scientific. So it could be that I'm slightly under for what this plant needs?

Edited by latitude54
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can you take a pic without light behind the leaf? can't really see much ln that pic

 

N def will be yellow leaves, primarily.

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Just now, ratdog said:

can you take a pic without light behind the leaf?

 

 

It's lights off at the moment so I can't really get another pic just yet but will try later. 

 

 

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If it's a thick canopy then you can expect some of the shaded leaves to due off naturally as there's no point the plant keeping them alive. 

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3 hours ago, MindSoup said:

If it's a thick canopy then you can expect some of the shaded leaves to due off naturally as there's no point the plant keeping them alive. 

 

These are visible from the top of the canopy. 

 

large_leaf.jpg

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should have taken a whole plant shot while you were at it lol:)

 

looks more like light bleaching than anything else, are all the leaves at the top of the canopy like it? have they been like that for long, and is it spreading? i don't think it has much to do with calcium

 

doesn't look like N def either

 

are root temps stable too?

Edited by ratdog
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Looks like a MG def to me plus I'd be getting temps up to 26-28 

 

Owd

Edited by Owderb
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15 minutes ago, Owderb said:

Looks like a MG def to me


I’m already adding Epsom Salts when feeding ( 1/8 tsp per L ). 


Root temps are 22-25. 
Room temps are 25-28.
 

 

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Maybe 1/8th of a tea spoon per litre is not enough.

 

I do about quarter of a (slightly larger plastic) tea spoon with mine (Everyones mileage may vary tho)

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