2 of my sugar leaves are dying/turning brown

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Lowlifellamas

Lowlifellamas

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Hey guys,
I’m growing an ILGM Girl Scout cookies auto flower, and it’s just approaching it’s 12th week.
Ive noticed that 2 sugar leaves on one of the buds are turning brown and curling up. I had a closer look at the stem and didn’t see any signs of bud rot so I’m wondering if this could be some sort of nutrient issue? I’m growing in soil. 2 weeks ago (week 9) at the recommendation of reddit I gave the plant some 12/1.4/7 liquid fertiliser after I noticed some leaves were yellowing. Now it’s got what looks like brown tips so I’ve stopped giving it nitrogen at all. Since then I’ve given it 2 feeds of canna PK 0/6/11 hoping that it would make the buds a bit fatter. I’ve also got a soil ph reader which says it’s at 7. My temp is sitting around 27C and humidity which I can’t yet control is at 45%. Any help would be much appreciated. I’ve attached labelled photos that display all the issues I’ve listed, and I’ll check in regularly to reply to your questions. Thanks again!
 
2A36632D ACB7 44F1 A5E2 B98C2A06FBB8
009F1B80 96B3 4C64 959A 4F613046B9AA
E693BE4D EC1B 4693 A51F 464D0378B2C0
12B19148 5678 478F BED1 FEFA5032A723
16F33D27 C69F 4C6F B96F BA2ADECBA888
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Jack og

Jack og

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Yellowing lower leaves are ok, they are dying of old age!
The up curled browned leaves are indicative of rot, if you tug it does it come off? If so look closer for caterpillars, they are microscopic and that could be the culprit
 
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Lowlifellamas

Lowlifellamas

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Yellowing lower leaves are ok, they are dying of old age!
The up curled browned leaves are indicative of rot, if you tug it does it come off? If so look closer for caterpillars, they are microscopic and that could be the culprit
Hey jack, just pulled the leaf out and noticed that the stem is brown too. So I know that it was bud rot causing the issue. I’ve removed the affected nug, any tips on how to fix/prevent this.
 
Jack og

Jack og

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Air flow and humidity , get humidity to about 50-% or less , Sprays at this stage is risky, but others may chime in. I suspect caterpillars so be vigilant and inspect well. When removing infected buds use a clean pair of snips dipped in alcohol every cut.
 
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PK1

PK1

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Air flow and humidity , get humidity to about 50-% or less , Sprays at this stage is risky, but others may chime in. I suspect caterpillars so be vigilant and inspect well. When removing infected buds use a clean pair of snips dipped in alcohol every cut.
lol, i meant warm air flow. like bring the temps up
 

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