Yellowing tops at start of Veg.?

m420p

m420p

Well-Known Member
I'm growing some Sannies Jack Herer F7's. When I switched from my Veg. to my Bloom room, all the tops(newer inner growth) turned a little yellow and I know that can be caused by lack of N so I just started adding more N. It's happened in all my other grows even after changing nutes but I've never really tried to tackle the problem cause it was never really effecting the product. It's wierd because they are fully green under the 400 watt MH but the day after putting them under the 1000 watt HPS while still using veg. nutes, the tops are yellow. It's almost like the light change is causing it. Maybe I have a crappy bulb? Other than that the plants are healthy as can be but I still want to figure this out.

I have a hard time believing it is a N deficiency mainly because it happened in the matter of a day after being put under the 1000 watt HPS and on top of that I was still using veg. nutes.

Idk, what do you think? Deficiency or something to do with the Light? I could post pics if needed but the light is on right now so they wouldn't be that great for this situation.

Can a Mod please change the title to start of "Bloom"... I'm such a stoner... lol
 
m420p

m420p

Well-Known Member
I also have only 4 leaves in one area that have another problem. I have a heater in the room for when the light is off and those leaves are near the heater so it could be caused by that. It is nowhere else on any of the 8 plants. What do you think?:



 
J

jpill

Well-Known Member
I don't see any "yellow." I see light green. New growth is lighter in color, it turns darker as the growth matures. 100%!

as for the second picture, I don't know whats going on there.
 
m420p

m420p

Well-Known Member
jpill said:
I don't see any "yellow." I see light green. New growth is lighter in color, it turns darker as the growth matures. 100%!

as for the second picture, I don't know whats going on there.
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Well if that's the case I'm not going to worry about it. I'm pretty sure the second pictures are caused by my heater because it is localized to that patch of leaves that are by my heater.

Dontae said:
Maybe need some cal/mag.
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Feed them plenty, 250 + ppm of Cal/Mag. because I use Distilled water. So now that I have those figured out I have few more pictures for you guys to check out. I've found just a few leaves that have a few bumps and near a couple of those little cluster of bumps it looks like part of the plant was eaten. I found what looks like a lady bug but I thought they were good to have around because they eat some pests. Check them out:
1

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These pics. look like a different problem, to me looks like some sort of deficiency:
6

7

8
 
m420p

m420p

Well-Known Member
rooky1985 said:
Check this out http://www.drugs-forum.com/growfaq/97.htm is that damage by the heater as well?
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Right on man that's exactly what it looks like! Well at least for the pictures I thought were a deficiency. The way my heater is set up some of the leaves are in direct contact with the heated air blown out the heater. I think it's also lowering the humidity quite a bit so that could be part of the problem. Hope that's the problem. Still wonder whats causing those leaves to look eaten. But Thanks, I'll smoke one for ya.

Idk, now that I look at them it does look the "eaten" leaves are similar to the other ones just maybe farther along to where it actually pulled away parts of the leaf which made it look like they were eaten. I'll move that heater and check the humidity to see if I need to put a humidifier in there.
 
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