Artificial Lights

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Artificial Lights

Post by Jo-Ann M. Edward » Sun, 07 Apr 1996 04:00:00



This is my first year growing veggies from seed inside using
artificial heat & lights. My light setup is a flourescent desk lamp,
which seems to be very adequate for the few seedlings I have, which
are doing just fine. Everything I've read says that the lights should
stay on 12-14 hours per day. Does it hurt anything to leave them on
for 24 hour? I've run into the problem that if I turn them off at
night, I forget to turn them on in the morning. A timer won't work
with this desk lamp, since the switch must be turned on manually. Can
I leave the light on all day?

Jo-Ann M. Edwards

 
 
 

Artificial Lights

Post by Jim Crah » Mon, 08 Apr 1996 05:00:00



Quote:
>This is my first year growing veggies from seed inside using
>artificial heat & lights. My light setup is a flourescent desk lamp,
>which seems to be very adequate for the few seedlings I have, which
>are doing just fine. Everything I've read says that the lights should
>stay on 12-14 hours per day. Does it hurt anything to leave them on
>for 24 hour? I've run into the problem that if I turn them off at
>night, I forget to turn them on in the morning. A timer won't work
>with this desk lamp, since the switch must be turned on manually. Can
>I leave the light on all day?
>Jo-Ann M. Edwards

I leave mine on 24 hours/day and all 1500 seedlings I have seem to be
happy.  (spins the meter pretty fast though)

Jim Crahan
Stevens Point, WI

 
 
 

Artificial Lights

Post by James Ri » Tue, 09 Apr 1996 04:00:00




Quote:
>This is my first year growing veggies from seed inside using
>artificial heat & lights. My light setup is a flourescent desk lamp,
>which seems to be very adequate for the few seedlings I have, which
>are doing just fine. Everything I've read says that the lights should
>stay on 12-14 hours per day. Does it hurt anything to leave them on
>for 24 hour? I've run into the problem that if I turn them off at
>night, I forget to turn them on in the morning. A timer won't work
>with this desk lamp, since the switch must be turned on manually. Can
>I leave the light on all day?

>Jo-Ann M. Edwards

No, no problem with leaving the light on 24 hours.

Jim.

 
 
 

Artificial Lights

Post by T Cum » Wed, 10 Apr 1996 04:00:00


Quote:


>  >This is my first year growing veggies from seed inside using
>  >artificial heat & lights. My light setup is a flourescent desk lamp,
>  >which seems to be very adequate for the few seedlings I have, which
>  >are doing just fine. Everything I've read says that the lights should
>  >stay on 12-14 hours per day. Does it hurt anything to leave them on
>  >for 24 hour? I've run into the problem that if I turn them off at
>  >night, I forget to turn them on in the morning. A timer won't work
>  >with this desk lamp, since the switch must be turned on manually. Can
>  >I leave the light on all day?

>  >Jo-Ann M. Edwards

Plants do need a period of darkness to regenerater certain
biochemicals...  There was another post perhaps last week that
disclosed some of the reasoning behind this.  You really should
attempt some sort of darkness schedule for these plants.  After all,
what plant in "real" nature gets sunlight for 24 hours straight??
 
 
 

Artificial Lights

Post by Travis Salin » Wed, 10 Apr 1996 04:00:00


Quote:
> >  >This is my first year growing veggies from seed inside using
> >  >artificial heat & lights. My light setup is a flourescent desk lamp,
> >  >which seems to be very adequate for the few seedlings I have, which
> >  >are doing just fine. Everything I've read says that the lights should
> >  >stay on 12-14 hours per day. Does it hurt anything to leave them on
> >  >for 24 hour? I've run into the problem that if I turn them off at
> >  >night, I forget to turn them on in the morning. A timer won't work
> >  >with this desk lamp, since the switch must be turned on manually. Can
> >  >I leave the light on all day?

> Plants do need a period of darkness to regenerater certain
> biochemicals...  There was another post perhaps last week that
> disclosed some of the reasoning behind this.  You really should
> attempt some sort of darkness schedule for these plants.  After all,
> what plant in "real" nature gets sunlight for 24 hours straight??

Don't forget that certain plants are photoperiodic, and will go to seed if
given too long a "daylength".  This is mainly a problem with certain
vegetables like onions, mustard, and spinach.

Travis

 
 
 

Artificial Lights

Post by Dana Shal » Wed, 10 Apr 1996 04:00:00


Actually, I have read that plants actually do much of their growing while
it is dark. They concentrate energy toward food production while the
light is on, but they need the dark hours to do the concentrated growing.
I do know that they gather the food during daylight and then use it
during the nighttime. I'm no expert, but the times I've tried the 24 hour
thing, it didn't work well for extended periods.
Dana

 
 
 

Artificial Lights

Post by Robert R. Harris Stoer » Fri, 12 Apr 1996 04:00:00


Quote:

>I leave mine on 24 hours/day and all 1500 seedlings I have seem to be
>happy.  (spins the meter pretty fast though)

>No, no problem with leaving the light on 24 hours.

If it works, it works, but why have I read so many times that plants
need a period of darkness? (Unless they are adapted to being in the
Arctic/Antarctic.)
Regards, Robert