Nitrogen Deficiency?

[polishpollack]

If the entire plant is yellowing, I'd say it needs to be fed something. Personally I don't feel comfortable using Miracle Grow stuff, but if I could make a suggestion, go to a hydro shop and get some Dyna Gro 7-9-5 and use one half teaspoon per gallon of water and give them that. Your potting might have some ferts to it, but it doesn't look like it has much. Superthrive is just vitamins and hormones, so don't expect much help there if the problem is what I think it is - low nitrogen. molasses won't do much either. It's really more for soil that has beneficial bacteria in it and I doubt if your soil does. I might be too late now to save them, unfortunately, but give it a shot if they aren't dead yet.

[headshake]

purpleskunk, where did the yellowing start?

what potting soil are you using?


-shake

[purpleskunk777]

Shake-
I'm using Scotts premium potting mix.
The yellowing began towards the bottom of the plant and worked its way throughout the middle/top over the course of 2-3 weeks. The yellowing is characteristic of a N deficiency, working its way from the outer edge of fan leaves towards the inner leaf, then flowers.
The flowers themselves appear to be affected only slightly, as of yet.

[Dutch Pimp]

Runoff = 6.0 in, 6.0 out with Gen. Hydroponics pH test kit...
Changes i made today:
-mixed in some dolomite lime (about 2 tsp to 2/3 pots) with the top layer of soil.
-watered (6.5 ph) water with 1/4 tsp of grandma's unsulphured molasses in hopes of making Nitrogen in soil more available to plant, as nitrogen seems to be locked out for some reason other than pH (can't be locked out at 6.0)

6.5 -6.9 ph is ideal for soil...IMO.

[purpleskunk777]

thanks dutch,
my soil might've actually been too alkaline ..i junked the old GH ph test kit and got a pH pen, which is much more accurate. have been watering with acidic water to slowly lower the pH and theyve been looking a little better now, a week later.

[darealbrain]

try reading my thread about stronger plants.if you try this many of the problem you are having will disappear like magic.what were you feeding the plants during the transition from veg to flower?more than likely thats what started all your problems.the plant was happy with what you were doing then all of a sudden what the fuck.some things that we do to plants take alot longer to show up than you think.its not always the last thing you did maybe what you did before then

[purpleskunk777]

thanks dareal....the dolomitic lime in addition to adding FF TB and molasses helped quite a bit. the plants are completely recoevered now and thriving!
i will indeed read your thread. thanks for the input :thumbsup:

[darealbrain]

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