What is this? :(
- Thread starter zappaa
- Start date
Ozumoz66
Well-Known Member
It may be septoria - hope not! It starts at the bottom and works it's way up - eventually taking over every leaf. It's in my soil and I have used landscape fabric to keep rain from splashing the leaves. Also considering container plants. It's happening all over and has people looking for septoria resistant strains.
zappaa
Well-Known Member
Well, this are top of the plant leaves... lower leaves dont have spots.
It looks like septoria
Good news is that only a few leaves got spots. What can i do?
Ozumoz66
Well-Known Member
Insects may have brought it to your plants. You could remove the infected leaves if there aren't too many. Practice good hygiene before touching another plant. Allow lots of air flow around each plant. You've already been using a fungicide as a preventative, so perhaps keep doing that - if possible use more than one type of fungicide.Well, this are top of the plant leaves... lower leaves dont have spots.
It looks like septoria
Good news is that only a few leaves got spots. What can i do?
Different strains will react differently to septoria. Some may be devastated and others will get a few spots but you will be able to finish the plants. No way to know until you complete the grow. I've dealt with septoria for 6 years, no know cure once you have it, but I have still managed to harvest plenty of quality outdoor despite that. That said, I can't definitively say that is septoria from just those pics.
Ozumoz66
Well-Known Member
Perhaps one of the residual detriments of legalization is that many growers are pollen chucking to make different strains and save money. If either plant (donor/receiver) has septoria, then those seeds too will produce plants with septoria - further perpetuating the problem.
Farmer's Hat
Well-Known Member
I didn't know that septoria can be passed on to seeds. Lucky for me, I haven't encountered septoria.
thumper60
Well-Known Member
If your in veg I would use some sulfur or copper the only thing i have seen work after outdoor growing 40 plus yrs, In flower god help ya thing with any fungus it needs to be caught early an dealt with strongly hope you are in veg mode.Well, this are top of the plant leaves... lower leaves dont have spots.
It looks like septoria
Good news is that only a few leaves got spots. What can i do?
thumper60
Well-Known Member
No it cant its a outdoor plant problem spread by spores floating in the air. never seen a case indoor.
thumper60
Well-Known Member
No theres no facts to support that. septoria is a seasonal fungus that grows an spreads across the world on many plants. The best a outdoor grower can do is have a solid IPM to nip this shit in the bud as they say! I used to get killed with it here in maine but over the years have learn to nip it in the bud an never see it on a flowering plant.
Farmer's Hat
Well-Known Member
I haven't looked into it. It does seem a bit farfetched, to imagine that fungus being passed on to the seed embryo.
I have seen pm passed on to seeds. Ive also read that a hydrogen peroxide soak kills all the spores that would otherwise enter the seedlings system once it sprouts.
Ozumoz66
Well-Known Member
You're probably right. There aren't many articles that could be found to substantiate that claim but below is one - and it could be bullshit, so I'd like to retract that idea that it's passed onto the seed. It's probably not a great practice to keep seeds from an infected plant though. I'm glad you've found a way to control it.
Septoria Leaf Spot Symptoms & Treatment | Trifecta Natural
Septoria leaf spot is most commonly found on tomato plants but also attacks cannabis, eggplant and potatoes.
www.trifectanatural.com
I usually soaked my seeds in 3% peroxide for a minute or so, then rinse them before planting them.
Septoria is a fungus not a virus, and is not passed on through seeds to my knowledge. It occurs when environmental conditions are favorable. Actually, the pollen chuckers will be the ones to find strains that do well against septoria! I have found a couple of strains my self that do very well against it.
Ozumoz66
Well-Known Member
There are cases in wheat where septoria is seed borne. Guessing the fungus is on the outside of the seed.
It's fascinating what strains are available today. Glad to hear you've found some strains that are resistant to septoria.
thumper60
Well-Known Member
Pm spores do not get passed around inside seeds. Pm spores are everywhere you breath them in all day an night they just need the right temp an rh to spawn an spread. It is a good idea to drip seeds into HP to kill any spores on it. Damping off is why more common in seedling than Pm.
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