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So these ladies are about a month old now, and were just put back under a 400w mh after being under shop lights for a couple a weeks due to a broken ballast. All is well with the lighting...but now this!!! I've read it could be due to a nitrogen deficiency, or ph problems. But I need some advice. My soil ph is pretty close to 7 and the plants were just transplanted into an organic peat free potting soil. Here's some pics. PLEASE HELP
also if I could get some opinions on how they look for a month. thanks!:jointsmile:
I would guess it's a combination of transplanting shock and possibly some over-watering..? It can be easy to over-water when doing a transplant, and yellowing leaves near the bottom are a tell-tale sign of that... doesn't look like anything to worry about at this point though.
I wouldnt say overwatering considering i try to maintain a wet/dry watering cycle. Also the leaves started yellowing before the transplant
Nitrogen deficiency would have been my first guess, too... especially if you weren't already on some kind of feeding schedule before you transplanted. If your soil has fertilizers already mixed in, then that should slow or stop the yellowing. If the soil doesn't have any amendments in it, then now would be a good time to start lightly feeding with a nitrogen-rich fertilizer.
Take care. :jointsmile:
Ok so I thought it might have been a nitrogen deficiency but it seems that its slowly, slowly progessing up the plant, it being yellow turning leaves. What other problem could this be???
Have you fed them at all since they were transplanted? A nitrogen deficient plant will often start yellowing at the bottom fan leaves and gradually work it's way up as the lower leaves die off. If nothing's being locked out due to pH, I'd still venture a guess that the plants aren't getting enough nitrogen. If you've been feeding it with a nitrogen-rich fertilizer, however, you should fill out the Troubleshooting Form so that we can get a better idea of what might be causing it.Quote:
Originally Posted by bcals0087
If you haven't started feeding it yet, you need to start now. Start at about 1/4 the recommended strength and gradually work your way up until the yellowing stops.
I only started the feeding after they were transplanted. And thats when the yellowing started to get a little worse. So far i've had 2 sets of leaves fall off the plant in the second picture, and one set fall off the one in the first pic. I even fed them at 3/4 strength because I thought that they might have been dyin for some food. I just tested the PH of the water and it was very high, so that was my guess. That the plants needed food, but couldn't get it cause the PH was too high. Plus the stress of the transplant, things did not help out. I'll post pics tomorrow, but I adjusted the ph of the water, I'll water them with that for a little and then feed them again, once the roots are able to access the nutrients.
I've noticed leafs grown at a period of underfeedling will stay yellow tipped while the newer leafs will be fine when feedling is normal, though i may have had to much lsd in my younger days ::shrugs shoulders:: and be talking shengis
forgot to ad....this is a seedling stage i noticed this...