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Is this septoria or alternaria? The plant is doing...
John_Federicstarted grow question 2 years ago
Is this septoria or alternaria?
The plant is doing well, buds are not affected (at least not now) so I hope it’s septoria. Few weeks till flowering complete, do you think I can carry on with it?
Please tell me it’s septoria and not alternaria. Thanks to anyone that will respond
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Leaves. Color - Mottling
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Mr_Incognitoanswered grow question 2 years ago
Hi! It looks more like Septoria to me. But it’s not possible to tell from a picture. You need a microscope to analyse spores. Septoria has long thin longitudinally segmented spores. Alternaria has club-shaped spores with segments connected horizontally and vertically. At least a macro photo of the spot would be helpful to see spores sacks.
Terp1answered grow question 2 years ago
Ich denke Mr_Incognito hat Recht. Es ist ein Pilz: Septoria
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John_Federicanswered grow question 2 years ago
@needweed, at first I thought it was calcium deficiency too! So I din’t bother treating it because it started mid-flower and it’s a thing that happens everytime with my plants (I generally don’t use cal-mag), but then… it started spreading too fast, hitting small leaves too, and the fact that I couldn’t put humidity below 65% in the grow room for 2 consecutive weeks… I’m almost certain that it’s a fungus. Now I transferred the plant outdoor (20ºC and about 40% humidity with bright sun) so I hope the fungus will slow down a bit. Anyway, thanks for answering🙏🏻🙏🏻
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