Why are my seedlings closing up?
- Thread starter jpeg666
- Start date
hotrodharley
Well-Known Member
Light used? Possibly too "bright" for seedlings this size.
jpeg666
Well-Known Member
Temps are anywhere from 70-85.
I am using a maxlume 4' 4 bulb Fluorescent light 5400k Spectrum. Well I would agree it was too bright but the other seedlings are right next to it and you can see they are doing fabulous.
Nice Ol Bud
Well-Known Member
Only thing that makes sense to me is that they are at the "Light Saturation Point".
Happens to my tomato plant's.
What light schedule do you have?
Happens to my tomato plant's.
What light schedule do you have?
jpeg666
Well-Known Member
"Light Saturation Point". What does that mean?
They are on right now 24/0 sometimes it gets turned off before I go to bed but not often lately
Nice Ol Bud
Well-Known Member
They're not getting sleep.
Exactly.. A plant can only absorb so much......
It needs sleep...
Exactly.. A plant can only absorb so much......
It needs sleep...
Brother Numsi
Well-Known Member
Seems like 18/6 might improve things........IMHO
Nice Ol Bud
Well-Known Member
It means exactly what it says...??
I don't know how else to answer that.
Read this on LSP.
http://www.marietta.edu/~spilatrs/biol103/photolab/saturati.html
Nice Ol Bud
Well-Known Member
This is a quote on quote...
As light intensity is increased, eventually an intensity is reached above which light no longer is the factor limiting the overall rate of photosynthesis. We say that a process is 'saturated' for a particular reactant when adding more of it does not increase the rate, just as a sponge becomes saturated with water when it can't hold any more. At the light saturation point, increasing the light no longer causes an increase in photosynthesis.
As light intensity is increased, eventually an intensity is reached above which light no longer is the factor limiting the overall rate of photosynthesis. We say that a process is 'saturated' for a particular reactant when adding more of it does not increase the rate, just as a sponge becomes saturated with water when it can't hold any more. At the light saturation point, increasing the light no longer causes an increase in photosynthesis.
jpeg666
Well-Known Member
Explained it perfectly. Thank you for that. Learned something new today.
