Nitrogen def? Or nute burn? Something else?

ShLUbY

Well-Known Member
Do you have drip trays under your pots, if so, remove them. When you water, you should have 25% run off. Without a run off you'll have salt
build up at the bottom of the pot which can affect the feeding.
@FXBlaze
you don't need to remove the drip trays. you just have to vacuum the water out from them so they dont sit in the water, or put something in the trays to keep the plants above the run off water, and like above poster said, 25% runoff is a good thing. get a shop vac specifically for this job. so much easier. You can not say that its Nitrogen deficiency for sure because magnesium deficiency will cause the plant to break down chlorophyll in the OLDEST leaves first to aid in chlorophyll production in the newest growth. However, the look of the yellowing leaves looks more concurrent with N deficiency. Nitrogen is pretty available for plants in all Ph ranges if you look at the availability chart for Ph and Micro/Macro nutes.

IMO, #1 you should be removing any leaves or bud sites within 6"-10" of the soil just to avoid splash up from watering, which can cause unwanted spores from the soil to make contact with your plant and cause disease (especially outside). #2 those leaves and bud sites should be removed when they no longer get enough sunlight to be productive. The plant will waste energy trying to produce in low light, rather than putting all its energy into the top 3/4 of the plant which is what you want for killer dense nugs. #3 check your runoff water Ph to see where you are at. maybe you need to add some dolomite to sweeten the soil a bit and get that Ph back to 6.5. what is your soil medium? if you have peat moss as the main make up, it is naturally acidic and if you do not add any lime to it (some companies come mixed with lime but it's usually not enough IMO) your Ph will go south after the dolomite dissolves.
 

chuck estevez

Well-Known Member
It looks like a nitrogen deficiency to me, here a pic to check out.

Here are 3 pics of what a nitrogen def looks like.... the first one is a nitrogen deficiency in vegging. the 2nd picture is nitrogen def in flowering; THis is completely normal for mid to late flowering; as you would want your plant to naturally yellow at the end. DO NOT add nitrogen supplement to fix the problem; just let the plant yellow as cannabis does towards the end of flowering. The last picture is one that is caused by TO MUCH Nitrogen.

(Picture 1 is a Nitrogen Deficiency in veg)( Thanks to m&m for letting me use the pic)

(Picture 3 is Mine)

Click this bar to view the full image.
it is NOT completely normal, AND his plants aren't even budding yet,DOH!
 
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