Question on a Nitrogen Deficiency?

[razzapiggy]

Hello Everyone,


Noticed some yellowing on my leaves, mostly towards the bottom 1/3 of the plant, but also some yellowing on the top 1/3 of the plant as well. Bought some nitrogen heavy nutes to give them, and I have given water two times with the added nutrients (first time was five days ago)

Tonight was the first water without the nitrogen added. About two days ago things started to appear much greener, with little sight of yellowing leaves. I take off the ones that become completely yellow and appear dead.

After waiting about 12 hours too long to water them (they started to wilt a tiny bit) I went into the room today and found some yellow leaves at the bottom 1/3 of the plants. Things still appear much more green up top especially, but I still notice a tiny bit of yellowness on about 3 out of 30 of the plants (on the top 1/3 of them), and then some yellowing at the bottom on about 7-8 out of 30 of them. What should I do? Give them more water with the nitrogen additive in it? I am six weeks into flowering, and I know you are supposed to deprive them of N in their final weeks.

I am curious what to do, and also curious if the slight wilting could have caused the leaves on the bottom to get yellow at a faster rate? I sort of feel like giving them N again, maybe at half dose.. but wanted to run this by you helpful people first.

razzapiggy Reviewed by razzapiggy on 01-30-2007. Question on a Nitrogen Deficiency? Hello Everyone, Noticed some yellowing on my leaves, mostly towards the bottom 1/3 of the plant, but also some yellowing on the top 1/3 of the plant as well. Bought some nitrogen heavy nutes to give them, and I have given water two times with the added nutrients (first time was five days ago) Tonight was the first water without the nitrogen added. About two days ago things started to appear much greener, with little sight of yellowing leaves. I take off the ones that become Rating: 5

[bejay]

your probably getting fairly close to harvesting unless it is a long flowering strain probably wouldnt worry about it to much, are you using any flowering nutrients if you are when did you start using flowering nutrients? if you keep using your veg nutes till 2-3 weeks into flowering then switch to flowering nutes you will be less likely to develop a nitrogen deficiency during flowering.

[Zandor]

The yellowing is normal in the larger fan and sun leafs late in flower. What is happening is the bud that is closest to the leaf is using up the energy of that leaf and does not need that leaf anymore.

Once it turns over 50% yellow then it no-longer produces chlorophyll so you can cut it. Just when you do cut it leave a small bit of the stem from the leaf still attached to the stock. That way there is no damage to the stock and the plant will heal better and be stronger for that.

Now for the disclosure: Not all of yellowing is from that and some is signs of nutrient problems so it's up to you to check the Ph, TDS, and other little signs of multiple problems.

Those are the little nuance that I keep talking about but it does take years to know them by sight so you can correct problems before they get out of hand or if it's just nature being nature.

[razzapiggy]

Yep, sure am giving them flowering nutrients. Thanks for the info gang. My strain takes about 9-10 weeks, and I am 6 in, so I guess I could hit em with a splash of nitrogen again... and then let them be, probably won't hurt right. Maybe give em 1/2 the dose I gave last time....