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Grow QuestionsN or P deficiency? Back to Grow Questions

N or P deficiency?

SaiMutsustarted grow question 10 months ago

Need help to understand if this is P or N deficiency. It's on the lowest fan leaves, one is more pronounced than the other, and it's mostly on one side. Stems and veins look like they're giving hints of P def but from what I searched leaves look like it could be N def.

SaiMutsu

SaiMutsu

SaiMutsu

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Leaves. Color - Dark-purple

Leaves. Color - Dark-brown

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00110001001001111Oanswered grow question 10 months ago

Possibly both.. N for sure. P would have some blueish hues in leaves. copper dead spots but no paling (chlorosis). See the copper/rust but no blue. probably coming in a bit. The more i look at pic #2 the more i think it is both.

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Scrubbyjimbobanswered grow question 10 months ago

I'm more inclined to chalk it up to poor lighting. If a leaf uses more energy than it creates(like by being shaded out at the bottom of a thick canopy)a plant will often cannibalize it to provide nutrients for newer/better growth. It's nothing severe regardless or you'd see it in newer growth.

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AutoflowersSucKanswered grow question 10 months ago

looks like nitrogen to me. Whole plant looks pale and nitrogen will be pulled from lower leaves to be used at the tops.

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