Nitrogen Defic. what do i do

my plant is 2months old by now, and the bottom two leaves have almost completely turned yellow. i have fox farm grow big nutes right now and gave it some of that, but i didnt give it the full dosage (2/3) because I hadnt seen the leaves yet. Should i add a boost of nutes next time(if so how big of a boost) or just keep feeding it how i have. the problem with keeping on feeding it normal is ive been feeding it almost normal dosage for a while, so thats obviously not doing the trick.

Uvalax said:

my plant is 2months old by now, and the bottom two leaves have almost completely turned yellow. i have fox farm grow big nutes right now and gave it some of that, but i didnt give it the full dosage (2/3) because I hadnt seen the leaves yet. Should i add a boost of nutes next time(if so how big of a boost) or just keep feeding it how i have. the problem with keeping on feeding it normal is ive been feeding it almost normal dosage for a while, so thats obviously not doing the trick.

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if your absolutely sure its nitrogen deficiency then don't fertilise with everything as it could cause a toxicity with other nutrients, ammonium sulphate can be easily applied to soil and contains around 20% nitrogen and its generally really cheap from garden centres but don't over apply as it can conflict with magnesium and calcium.
hope that helps

got pics? I'll bet your worrying over nothing. after a while leaves will age and become less effecient at making and storing energy. your plant is taking the stored nutes and energy from them because the plant doesnt think they are worth keeping alive anymore.

DD420 has a great point. It is also caused by the light not being able to penetrate the canopy effectively. Try a lil vitamin b with your next feed. That will reduce any stress they may be experiencing. Or perhaps a shot of Kelp extract as it contains all sorts of good things like micronutrients and vitamins, I like Age Old Organics works great and is cheap. Also if you are close to flower Kelp will help transition your plants into flower and reduce the stretch they go through in the first couple weeks. But if not than it will help the over all health of your plants and help tighten internode spacing.

Pull off those leaves if they are too far gone or out of the light. Because the plant will focus its energy on repairing the yellowing leaves when they are really no longer necessary.

That should oughta do ya' late.

Pull off those leaves if they are too far gone or out of the light. Because the plant will focus its energy on repairing the yellowing leaves when they are really no longer necessary.

no, dont do that, it is removing the energy and that stored in them, if you cut or pull them before the plant takes out what it will your just wasting the energy your plant worked so hard to make and store. the plant will drop them when its ready. if they dont come off with a very gentle tug leave them.