In my opinion its not leaf spot or any other type of fungus because of the pattern. There is no fungus that I know of that leaves that pattern. Looks more like leaf miners to me.
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Looking for guerillas with leaf spot diease experience.
- Thread starter hamstring
- Start date
https://www.icmag.com/threads/swamptube-resource-thread.52284/#post-1481761 might be something like
Paradox808
Member
I thought hemp and cannabis didn't like wet feet ?
learn something new every day.
(they don't mind as long as it doesn't rot.
otherwise we wouldn't have hydroponics
Paradox808
Member
Growing in a swamp is nothing comparable to a hydro setup
sounds like we fund a limitation we can work on
Selection is the only solution, in my experience! Had a pheno of Salvisa, by Lymerising Farms that had no spots, next to plants that were totally devastated. https://www.beegensbeans.com/product-page/salvisa-holiday-hookup
Homegrown5257
New member
I remember it that way where I’m at. I took a long break from growing after around 97 or 98 and didn’t take it back up till 2013 and have noticed a lot more issues now vs back then.
I have wondered if it’s possible that a lot of the more modern genetics/strains are just less hardy/more susceptible to diseases due to being bred and reproduced in more perfect environments indoors.
Homegrown5257
New member
I would hazard a guess that this is a root fungus possibly fusarium. Bet it continued to have more limbs or sections die off like that for a short time and then killed the whole plant
Pédetoddy
Well-known member
that was last season. But still, thank you very much. I have a plant developing the same problem this season.
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Captain Red Eye
Active member
Sulfur spray on plants in veg (never in flower) and removing any leaves with septoria on them can help. The blight tends to start on lower leaves and move up the plants. Helpful to clean up lower growth on plants before it takes hold.
Some strains do seem to be more resistant. Septoria can migrate from vegetable gardens, fruit trees or weeds onto cannabis. I don't usually use copper on cannabis, but it can be helpful to dust any weeds or tall grasses near an outdoor grow with copper. Both powdered copper and sulfur are commonly available in garden sections at stores or online.
Some strains do seem to be more resistant. Septoria can migrate from vegetable gardens, fruit trees or weeds onto cannabis. I don't usually use copper on cannabis, but it can be helpful to dust any weeds or tall grasses near an outdoor grow with copper. Both powdered copper and sulfur are commonly available in garden sections at stores or online.
It looks like you are growing in compacted soil with a minimum amount of "root respiration".
Plants will become diseased if there is not enough oxygen in the root zone.
Do plant roots need oxygen in the root zone?
Yes, plant roots need oxygen to function properly they perform a process called "root respiration" where they absorb oxygen from the air pockets in the soil to produce energy for growth and nutrient uptake, just like other living parts of the plant.
Key points about plant roots and oxygen:
Essential for growth: Without sufficient oxygen, roots cannot properly absorb water and nutrients, leading to stunted plant growth.
Soil conditions matter: Well-drained soil with good air pockets allows for optimal oxygen availability to the roots.
Overwatering issue: Too much water in the soil can displace air, suffocating the roots.
Impact on plant health: Lack of oxygen to the roots can cause root rot and other plant diseases. google
In the future try to add a lot of organic matter (compost) to the growing area to raise the soil higher than the ground. The organic matter will hold more oxygen that the plant needs for "root respiration".
