Is this a fungus / septoria?

hawse

hawse

Well-Known Member
I really don't think this is a cal or mag def, and I don't have any bugs... Only one of my plants has gotten this - and from time to time I will get a strain that seems to get this problem (I grow a lot of bag seed lol). For a long time, I thought I was getting the occasional deficiency, but I'm starting to think now I have a fungus that I need to deal with. Thoughts? This started about week five of flower, lost a bunch of leaves, growth has been stunted. Assuming this is septoria or something, how do I deal with it after this grow? Is there some kind of bomb/fogger I can use? Thanks!

septoria.jpg
 
jondamon

jondamon

Well-Known Member
hawse said:
I really don't think this is a cal or mag def, and I don't have any bugs... Only one of my plants has gotten this - and from time to time I will get a strain that seems to get this problem (I grow a lot of bag seed lol). For a long time, I thought I was getting the occasional deficiency, but I'm starting to think now I have a fungus that I need to deal with. Thoughts? This started about week five of flower, lost a bunch of leaves, growth has been stunted. Assuming this is septoria or something, how do I deal with it after this grow? Is there some kind of bomb/fogger I can use? Thanks!

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To me I see some characteristic spots of what appear to be reddish in colour which usually means you have a calcium deficiency or an uptake issue of calcium.

This can be caused by a few things.

1. Not enough calcium in your feed

2. Over use of magnesium

3. Incorrect pH in the rootzone for uptake of Calcium.

Depending upon medium being used could also be a couple of other things related to medium choice.

Give as much info as you can.
 
hawse

hawse

Well-Known Member
jondamon said:
To me I see some characteristic spots of what appear to be reddish in colour which usually means you have a calcium deficiency or an uptake issue of calcium.

This can be caused by a few things.

1. Not enough calcium in your feed

2. Over use of magnesium

3. Incorrect pH in the rootzone for uptake of Calcium.

Depending upon medium being used could also be a couple of other things related to medium choice.

Give as much info as you can.
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I would be shocked if it's a calcium def... I'm using NFTG, which supposedly is near impossible to get a def like this. Ph has been steady at 6.5 - 6.8 (in soil). I'm also supplementing with Demeter's NFTG which is basically a cal-mag product as I understand... Now yes possibly over-nuted if anything, but it's also not lockout I don't think... I'm convinced it's a fungus... Humidity and temps have both been a little on the high side too...
 
thumper60

thumper60

Well-Known Member
hawse said:
I really don't think this is a cal or mag def, and I don't have any bugs... Only one of my plants has gotten this - and from time to time I will get a strain that seems to get this problem (I grow a lot of bag seed lol). For a long time, I thought I was getting the occasional deficiency, but I'm starting to think now I have a fungus that I need to deal with. Thoughts? This started about week five of flower, lost a bunch of leaves, growth has been stunted. Assuming this is septoria or something, how do I deal with it after this grow? Is there some kind of bomb/fogger I can use? Thanks!

View attachment 4376711
Click to expand...
don't look like leaf spot to me.lack of cal is what it looks like
 
hawse

hawse

Well-Known Member
Hmm ok, yeah I'm torn between the two - I guess that's why I'm getting opinions lol... But there's been so much calcium put into this plant's food it's crazy. NFTG is calcium based... I'm also just using tap water... It could just be shit genetics I guess ha ha. My runoff is consistently at 6.7, 250 ppms. I'm putting in about 800 ppms regularly so she's eating everything I give her. NFTG is also basically organic and not salt based so I don't think it's any kind of lockout. Maybe it's still just not enough, IDK... So it doesn't look like a fungal issue then at all? I don't want it to be fungal, calcium def seems easier to fix ha ha. Could it also just be nute burn?
 
thumper60

thumper60

Well-Known Member
hawse said:
Hmm ok, yeah I'm torn between the two - I guess that's why I'm getting opinions lol... But there's been so much calcium put into this plant's food it's crazy. NFTG is calcium based... I'm also just using tap water... It could just be shit genetics I guess ha ha. My runoff is consistently at 6.7, 250 ppms. I'm putting in about 800 ppms regularly so she's eating everything I give her. NFTG is also basically organic and not salt based so I don't think it's any kind of lockout. Maybe it's still just not enough, IDK... So it doesn't look like a fungal issue then at all? I don't want it to be fungal, calcium def seems easier to fix ha ha. Could it also just be nute burn?
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at this point I wouldn't try to much go with just water till the end.
 
hawse

hawse

Well-Known Member
thumper60 said:
at this point I wouldn't try to much go with just water till the end.
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Yep, agree - I think she's got about two weeks left maybe... After that am going to be doing a thorough cleaning of the grow space anyway and will probably spray some fungicide around too just in case...
 
hawse

hawse

Well-Known Member
Sir Napsalot said:
Not that it's impossible, but I have NEVER heard of anyone having nute burn using NFTG
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That's good to hear - personally I've had only super good luck with NFTG... I think this plant just not worth keeping around. But I still can't help but wonder - if it's bad genetics and therefore more susceptible to a fungus, then I need to clean up! My other girls look great, but they aren't bag seed :)
 
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