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 DudeTron
Registered: 10/24/09
Posts: 407
Last seen: 11 years, 1 month
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 Heat Stress? 
#369007 - 02/20/10 09:02 PM (15 years, 18 days ago) |
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So, I've got a plant flowering, and I think she's pretty far along. Say about 6 weeks give or take a week. Anyway, she's trained into a pretty flat 1'x1' canopy...
Recently the entire canopy has started to yellow quite a bit...
She's developed quite a limey color, so not yellow I guess, just dramatically less green.
The thing is, the interior of the plant, and even lower growth is still a healthy green color. I haven't heard much about 'newer' growth yellowing, other than growth tips whatever...
Could this possibly be a heat stress thing? Is this just the way my plant is aging?
I'm worried for my buds... they're starting to look a little paler too.
My plan was that if it's not heat-stress it's some kind of PH problem... I usually buffer by ph to about 6.5, but my tap water comes out to about 7 or so, so I haven't been messing with it...
I just watered with ph ~5.5 water to see if I can try to correct for it...
I also took measures to lower temps and brought the plant about 2 inches further away from the bulb.....
Does this sound right to you guys?
If you guys need the full report on this plant I can do one of the 'fill this out first' questionaires.
I can also get pics at lights-on in about 8 hours.
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DudeTron
Registered: 10/24/09
Posts: 407
Last seen: 11 years, 1 month
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Should it really yellow from the top down like that though?
I thought age-related yellowing was just the plant using the rest of the N in the soil etc?
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DudeTron
Registered: 10/24/09
Posts: 407
Last seen: 11 years, 1 month
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 Re: Heat Stress? [Re: pha3r0]
#374173 - 02/26/10 04:24 PM (15 years, 12 days ago) |
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I appreciate the response quite a bit.
It was also my understanding that the nitrogen issue should start from the bottom up, but had no idea too much would look that way it does.
At any rate, my plant has started to look quite a bit worse over the past week... it's really a shame because she's so far along.
One of the main problems I've had with this plant is not knowing what stage she's in throughout the grow/flower cycles. My latest theory is that she's just an extremely heavy calyx producer and that she didn't in fact start flowering until I flipped her to 12/12...
A couple reasons I've decided this:
Here's a picture of a clone taken from her:  Heavy calyx production in veg... again this plant is vegging.
I just bought a pocket microscope and she's about 15% clear, 5% amber, 80% cloudy trichomes, which as far as I know, is more consistent with her actual 6 weeks of 12/12 versus my assumed 8 weeks of "flower".
Because I had no idea where she was at in her cycle, I was feeding her HEAVY at about 3-4 weeks of flower with everything including high phosphorus supplements.
So after looking at the trichomes just about an hour ago for the first time, I said "oh fuck my plant is sucking ass". Flushed her with 6 gallons of water, and topped off with a light feeding of:
1tbs big bloom,
1/8 strength cal-mag,
a drop of superthrive,
and 1 tsp molasses
/ gallon
Although I'm actually really happy with these genetics I believe her full potential has come and gone... Better luck next time? Wish me luck guys, and thanks again.
~DT
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