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  #1  
Old 04-02-2009, 07:20 AM
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Default Dark period before harvest?

Is it a good idea to leave the plants in the dark for a few days before harvest? How many days are we talking like 3?
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Old 04-02-2009, 07:34 AM
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From what I have read, that is a bit of a myth. However I was told to always harvest plants after the sun sets, or while they are in their dark period.. Something about starches.. not exactly sure, but I have always done this.

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Old 04-02-2009, 07:44 AM
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Quote:
Originally Posted by Guerilla Family
From what I have read, that is a bit of a myth. However I was told to always harvest plants after the sun sets, or while they are in their dark period.. Something about starches.. not exactly sure, but I have always done this.

GFam

So what would be the difference in the buds between lights on or lights off harvests?

I usually run my lights at night, and end up harvesting in the morning after little ones head off to school. So I'm typically harvesting near the end of the light on cycle, or opposite of what your saying GFam.
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Old 04-02-2009, 08:16 AM
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I would like to hear what Useless or Skunky have to say about this. I too was planning on blacking out my plants for 2-3 days, just to see what happens..... not that I'd be able to tell though unless I just black out a few of them.
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Old 04-02-2009, 08:19 AM
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Quote:
Originally Posted by Average Joe
So what would be the difference in the buds between lights on or lights off harvests?

I usually run my lights at night, and end up harvesting in the morning after little ones head off to school. So I'm typically harvesting near the end of the light on cycle, or opposite of what your saying GFam.
What im saying is that I was always told not to harvest in the middle of the light cycle. Like, If they were outdoors, dont harvest during the hottest part of the day, say A bit after noon. I was always told to harvest in the evening, or early morning.. Thats all I am saying. I think that coincides with what you said AJ..IF im wrong, I may be misunderstanding you.

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Old 04-02-2009, 08:28 AM
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cjb03 posted a thread about "flushing" on 3-17 and in that thread this is what shaitand had to say...
"Some people say its not needed but I also use a couple days dark period before harvest. If you leeched then all the nutrients should have been converted to sugars in the plant and no more photosynthesis should be needed. Light at that point is just destroying photo sensitive flowering hormone and THC (which is just as light and temp sensitive on the plant as after harvest).

My understanding is that photosynthesis is needed to convert light to sugars but that the plant will continue using the sugars it already has without the need for light so long as it has water. If that is the case, leaving the plant intact in the dark will allow it fully use all its sugars and since flowering hormones are light sensitive their high levels should mean those sugars will be used for flowering and not veg. Should give sticker/heavier buds (somewhat, its only a couple days) and smoother smoke."
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Old 04-02-2009, 08:30 AM
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Quote:
Originally Posted by bLITzkRIEg420
cjb03 posted a thread about "flushing" and in that thread this is what shaitand had to say...
"Some people say its not needed but I also use a couple days dark period before harvest. If you leeched then all the nutrients should have been converted to sugars in the plant and no more photosynthesis should be needed. Light at that point is just destroying photo sensitive flowering hormone and THC (which is just as light and temp sensitive on the plant as after harvest).

My understanding is that photosynthesis is needed to convert light to sugars but that the plant will continue using the sugars it already has without the need for light so long as it has water. If that is the case, leaving the plant intact in the dark will allow it fully use all its sugars and since flowering hormones are light sensitive their high levels should mean those sugars will be used for flowering and not veg. Should give sticker/heavier buds (somewhat, its only a couple days) and smoother smoke."
Im not saying that leaving the plant in a dark period for a couple of days before harvest isnt beneficial, I only stated what I have heard. I am not certain it is right or wrong, just posting something I had heard. Hopefully, one of the professors will stop by to comment on this one..

Skunky? Useless? Anyone?

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Old 04-02-2009, 08:40 AM
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GFam I'm with you as I think this might be a bit of myth... Harvesting at the END of the dark period does give you 12 hours of dark before harvest. I also thought they will continue to use these sugars without photosynthesis after being harvested so is this the same as a dark period while they are still in pots? Now I feel confused, frightened and far from home... Or that could be the
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Old 04-02-2009, 09:32 AM
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Myth.

The only thing I have ever heard and makes sense was mentioned by Shiatand.

Light degrades THC. Therefore harvesting during the dark cycle should in theory provide a slightly higher level of THC. However, from experience, there is no noticable difference in potency when the final product is smoked.

Use of the stored sugars relates more to terpene and terpenoid profiles, and smoothness of the smoke.
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Old 04-02-2009, 09:58 AM
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Thanks everyone!
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