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Originally Posted by The Fool I believe it is fact, as the auxins in the terminal bud (the hormones that control growth) move down to the roots during dark time.
That is why you should put to-be topped plants under 18/6 (or any length of dark time).
That is why alot of people put clones under 18/6.
That is the only reason why 18/6 is an accepted setting here at this great community (besides with HID lights, for them to save electricity and cool off).
Correct me if I'm wrong. |
I believe you are incorrect, sir.
As you seem to already know, plants have 2 cycles of events that occur throughout a "normal" day outside. They are 1) the Light cycle, and 2) the Dark cycle. Also these cycles are called
Photosynthesis and Respiration.
However, what you might not know is that -while the name "Light cycle" is accurate - the name "Dark cycle" is not.
The dark cycle (respiration) happens constantly, 24 hours a day. The only reason we dubbed it the "Dark" cycle is because it is the obvious opposite of the "Light" cycle. This explains how we CAN keep plants under 24/0, with not side effects. They are missing out on nothing.
So while plants need light for the light cycle (photosynthesis), they DO NOT need dark for the dark cycle (respiration).
Even if the root growth was controlled by respiration (which I'm not sure it is, but since I'm not sure, I'll let it be), turning off the lights wouldnt speed it up...because it's always happening.
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Originally Posted by The Fool That is why you should put to-be topped plants under 18/6 (or any length of dark time).
That is why alot of people put clones under 18/6. |
I've personally never heard of putting to-be topped plants under 18/6....but that doesnt mean much (I'm sure I havent heard of alot of things lol)
But I do know that a majority of people you will talk to will tell you they put clones under 24/7, because clones need energy to root, and the energy they seek is of course, Light.
If this was the case (darkness speeding up root growth), why wouldn't people just put clones in constant darkness? Or at least 13/11 or 14/10. It would seem that more darkness would mean more (faster) root growth.
I just dont see the science or logic behind this....
