Week 5 in flower leaf dying on some plants
- Thread starter Akira90
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Beachwalker
Well-Known Member
Looks like mites
JohnDee
Well-Known Member
Akira,
My first thought was some sort of Ca++ issue.
But then I ran across this RUI thread on rust fungus. Looks similar to what you have happening.
https://www.rollitup.org/t/lets-talk-about-rust-fungus-what-you-need-to-know.614137/
JD
My first thought was some sort of Ca++ issue.
But then I ran across this RUI thread on rust fungus. Looks similar to what you have happening.
https://www.rollitup.org/t/lets-talk-about-rust-fungus-what-you-need-to-know.614137/
JD
Beachwalker
Well-Known Member
^ Septoria can look like a lot of things at various points including mites (not saying it is op, just saying it can)
One of the bigger problems with diagnosing septoria is most people tend to chase ghosts, first suspecting deficiencies and then maybe even pests, and by the time its figured out they've got significant crop damage.
I would add septoria manifest differently strain to strain, making it even more devious and confusing too many growers
..op, need whole plant pictures
One of the bigger problems with diagnosing septoria is most people tend to chase ghosts, first suspecting deficiencies and then maybe even pests, and by the time its figured out they've got significant crop damage.
I would add septoria manifest differently strain to strain, making it even more devious and confusing too many growers
..op, need whole plant pictures
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hotrodharley
Well-Known Member
I think fungus or root problems related to continuous dampness are not diagnosed enough. I say this because of lots of questions about deficiency and especially calcium. Many of these posters claim to be using cal mag and pH treating water etc. I see people water close to the plant main stem. I suggest watering just away from the edge of the container where you want the roots to grow out to.
Beachwalker
Well-Known Member
Thanks for the link, great article!
Prevention.
Currently there are 2 or 3 types of Pathogenic fungi which are resistant to sterilization. (Bleach washes, Sulphur Candles, Soapy washes etc.). One of the best preventions you can take in your grow room is to have proper temperature, ventilation and always disinfect your room after every grow. Spraying plants 1 or 2 a week with some kind of fungicide (I prefer Sulphur based) is also great since it reduces the changes of spore germination.
Cure
Its extremely hard to get rid of once you got it most fungicides with help slow it down but not kill it completely. At this time the only way to cure a plant once Rust fungi has gotten hold is with Systemic fungicide which runs through the plants cells killing any fungi it comes into contact with, which also can be bad since it will kill helpful fungi as well. Any infected plant material should be burnt or put in a garbage bin outside of the home as composting and leaving it a normal garbage will just spread the infection more
Miyagismokes
Well-Known Member
This is septoria, huh?
I'd diagnose this as a case of thrips and russets simultaneously....
JohnDee
Well-Known Member
Sheesh Miyagi...what are you, the bug whisperer?
JD
Beachwalker
Well-Known Member
Exactly! ..it only manifests that way on my white rhino X mazar, it looks differently on the other strain (now strains, I found a 3rd affected strain today)
Miyagismokes
Well-Known Member
Interesting.
I live in a semi-arid location, so I hardly ever see fungus outside PM and botrytis.
Learn something every day.
propertyoftheUS
Well-Known Member
What medium? pH? pH of runoff if applicable? Type if fertilizers and ppm in and out? Type of lightning and distance? RH and temp?
70's natureboy
Well-Known Member
I'd say the first pic looks like classic phosphorus burn. The other pics, not so much. We don't have much info to go on as propertyofhteus mentioned.
Miyagismokes
Well-Known Member
Good bloody luck in flower...
Hope you pull it off.
That’s not encouraging lol
Beachwalker
Well-Known Member
Yes in my first post I said it looked like mites. I was talking about septoria with the guy above, which I probably shouldn't have done in op's thread, hope I didn't confuse, was trying to point out how septoria can look like a lot of things, including mites and how easy it is to start seeing septoria behind every bush (or on every bush!) Best of luck op, get after it quick!
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There are currently 2 people on here blaming every spot on any plant as septoria.Septoria is an outside condition mainly.You would have to maintain yoyur grow like a swamp to get septoria indoors.I'm not sure why you think septoria is the problem.Like I said before none of your pictures shows septoria.
Gdub51
Well-Known Member
So nmibud, do you think this is septoria?? I can't get rid of it. See my recent posts,, Gdub51
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Gdub51
Well-Known Member
I disagree, this looked allot like the septoria I have right now which is arrested thanks to a copper oil wash suggested by BeachWalker. Checking for mites with a jewelers loupe first was the right procedure.
I did in my original post tell all. (outdoors, PH between 5.8 and 6.5 And yes it was Septoria or a similar fungus and a copper wash has throttled it. I recycled last years soil and I think the fungus was already in the soil. I will need to dump all the soil this year and start over and sterilize all the equipment. This years harvest, even after fungus is now looking great. Much better than last year. Here's a pic of my twisted sisters, a pair of white widow, LST'd into a spiral. This method keeps colas low and out of the wind and they come from the BOTTOM of the plant nearest nourishment.
