Why does the end of flower fade only happen to fan leaves in direct light first?

[frizzelrip]

I noticed that only the main fan leaves with direct lighting (rite under my reflector) are the first leaves on the plant to exhibit nitrogen fade? So I guess what im asking is, does light intensity play a roll on wich part of my plant starts to fade yellow first?

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[SnapsProvolone]

I think the uv light is breaking down the chlorophyll in late flower when your plant is basically done with the fan leaves.

Nitrogen depletion should start at the bottom and work upwards.

 

[greenlikemoney]

Yes, N depletion should start at the bottom, so maybe you have something else causing this.

 

[frizzelrip]

Yes, N depletion should start at the bottom, so maybe you have something else causing this.

The plants are mainlined so high is like 3 foot up is were my foliage even starts, but yeah its at the bottom first, but happening more so in places that are getting the most direct lighting.

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