Interesting read -

" Light Cycles

The dark cycle is very inportant to palnts. Respiration (this is when plants are making energy from sugar to oxygen) Continues in dark but at a much slower pace, almost independent of available oxygen because the leaves are not making oxygen in the dark.

In the dark there is a shift from leaf production to root production as the leaves transfer excess energy down to the branches and roots. Therefore, some dark time allows for better root structures. Giving plants a 24-hour light cycle is not the way to supercharge growth"

This is from "How to supercharge your garden"

"Light period for cuttings

Plants have a free running internal bio-rhythm of 21-27 hours. In this rhythm, they need dark time. Cuttings have a built in daily rhythm (age also) that they inherit from their parent. Cuttings will root better with a 6 hours to 8 hourdark period because this is the main time when leaves and the stems transfer energy down to the root zone for storage and growth."

The chart has hours of light per day on the bottom, and length of roots in millimeters.
-@ 4hours of light the roots after ten days were only 22mm long
-@ 8 hours of light after 10 days the roots were 25 mm long
-@12 hours of light we shoot up to 40mm long
-@16 hours it peaks at 50mm
-@20 hours it drops down to 37mm
-@ 24 hours it drops down to 29mm

There is also info regarding root to yeild ratio vs veg to yield ratio, and draws the conclusion that at the end of the experiments the root to yield ratio was higher
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SeeMoreBuds
HOW TO GROW MARIJUANA - 15LBS IN 80 DAYS
www.SeeMoreBuds.com

That is a very interesting piece you got there Knowm! So it would be best at 16hr of light and 8hr of dark for veg? And when you say root/yield was higher than veg/yield do you mean more roots more yield?

I want to know about the root to yeild comment. More roots, more yield?

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???? eeemmmmmm?

needs to be stickied

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Spreading Happiness One Bud at a Time

Great post knowm!

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Hospitals have patience... I DON'T!!!

Yeah, come on-root/yield, veg/yield. what the hell are we talking about here??????????

Interesting find.

Makes me want to get a new timer. lol.

Definately an awesome. Glad I did it right the 1st time around!!