Heat stress or just lack of N

[Dannoo93]

So end of flower and was questioning this. Is this a lack of Nitrogen or heat stress. Week 8 of flower temps hit abot 86 on my thermometer buds read about 82 with laser thermometer.

Dannoo93

 

[Dannoo93]

Forgot the picture

Dannoo93

 

[guardogz]

ya dan get the temps down/raise the lights. if the lower leaves are still green maybe hold off on the nitrogen. there are many(but not all) experienced growers advocating to not let the leaves yellow. also make sure ur not at the begining of a bug problem or nute issue. sorry to throw the kitchen sink at ya. my severe mite infestation was hidden behind a light burn, late in flowering. u could also check the top nugs to c if they re drier than lower nugs. rather new to indoor growing. and my burned leaves never recovered, so i snipped them. so i m guessin u ll have to rely on new growth to c if u ve fixed the prob.

 

[Dannoo93]

I stopped nitrogen 3/4 weeks ago no bugs and light is about 16 inches

Dannoo93

 

[Merlin34]

That's not N deficiency. N def starts on oldest fan leaves from my experience as they drop off late in flower usually starting with the oldest first. At least that's always what happened to me before I started using a bit more N in flower. Now my leaves stay green the entire time. What sized light is 16 inches away?

 

[Dannoo93]

That's not N deficiency. N def starts on oldest fan leaves from my experience as they drop off late in flower usually starting with the oldest first. At least that's always what happened to me before I started using a bit more N in flower. Now my leaves stay green the entire time. What sized light is 16 inches away?

Ya I know n def starts at bottom has to be some kind of stress 1000 watt air cooled hood

Dannoo93

 

[colonuggs]

how cold did you get??

 

[Bublonichronic]

Sometimes the higher temps can make the plant transpire more and use more water make burn more likely to happen, I think

 

[Dannoo93]

Well I took a hose out that was exhausting into flower tent from veg and temps hit 82 said thermo usually gets down to 70 I believe

Dannoo93

 

[Bakatare666]

So end of flower and was questioning this. Is this a lack of Nitrogen or heat stress. Week 8 of flower temps hit abot 86 on my thermometer buds read about 82 with laser thermometer.

Dannoo93

Did all that happen at once? Or did the yellowing come first, then you fed, and the brown tips showed up?

 

[jojaxx]

Doesnt look like the end of flower yellowing that I usually see....looks more like something burning or maybe severe cal/mag problem. End of flower yellowing shouldnt have your leaves curling & crisping.....looks brown & not yellow....to me anyway......good luck to ya, hope you get it fixed.

 

[dannyboy602]

^^^i was going to say the same thing. its not temp related.

 

[ohshitson]

Mg def. starts at the bottom older leaves, also would be curling upwards? Looks like classic nute burn, maybe a better pic of the whole plant would change my mind tho

 

[Dannoo93]

Just gradually

Dannoo93