[b said:Quote[/b] ]Spot on Ben. Most plants need a rest period from photosynthesizing for gas exchange.
[b said:Quote[/b] ]i was wondering if you could keep the lights on for 24 hours or more? would that be bad for your plants?
Yes, of course. But some plants such as cacti and succulents keep their stomata closed tight during the hot, dry hours of the day, and then open them at night. This is so none of their water evaporates out of them. Though, I'm not at all sure about cps, though I would assume that plants, just as people and every other multi-cellular organism, tend to need a resting period. Plants didn't evolve to live in environments with sunshine always coming down on them. I would assume that they're slowly wearing themselves down. If what I say is not the case, then they will most likely be more susceptible to disease since they have no time to rest up.[b said:Quote[/b] (Est @ Jan. 23 2006,6:02)][b said:Quote[/b] ]Spot on Ben. Most plants need a rest period from photosynthesizing for gas exchange.
Mmm, I don't think it should be a problem (at least not for this reason). Many plants have their stomata open during the day while they photosynthesize (including all of the plants named, as far as I know.)
ZAK has been growing them for a year this way, if the plants had their stomata closed, there'd be little alternative for gas exchange (some in the roots) but soon oxygen would enter the calvin-benson cycle, photorespiration would occur, and after a short while the plant would be done for.
[b said:Quote[/b] ]Yes, of course. But some plants such as cacti and succulents keep their stomata closed tight during the hot, dry hours of the day, and then open them at night. This is so none of their water evaporates out of them. Though, I'm not at all sure about cps, though I would assume that plants, just as people and every other multi-cellular organism, tend to need a resting period. Plants didn't evolve to live in environments with sunshine always coming down on them. I would assume that they're slowly wearing themselves down. If what I say is not the case, then they will most likely be more susceptible to disease since they have no time to rest up.
[b said:Quote[/b] ]I'm still wondering how you could have your lights on for MORE than 24 hours a day.