Ricksauce
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Northern California has this problem pretty bad. I've found a correlation between accumulations of druse crystals of calcium oxalate to be present in high concentrations in the xylem of "infected" tissues. Fungal results are negative for the obvious majors. The problem first presented 3 years ago, with the arrival of GSC in Humboldt. GG4 is particularly susceptible, as is OG, but anything can get it. Proximity doesn't seem to be an issue. It's selective in it's target but stressed or weak individuals are almost certain victims.I and many other members on the farm have been searching for a thread on this to no avail. Hopefully this thread helps us figure out what, exactly, this dudding syndrome is.
So when I clone off of a mother plant I have a few genetics that will throw "duds". dud plants grow regular until some point in the first two months when they will suddenly stop normal growth, throw out tiny leaves with lots (7-9) of blades, lots of nodes, and usually will throw large mature pistils at the nodes. Trying to bend the branches usually will break the branch off, and over time the plant's healthy leaves will turn necrotic and begin twisting/dying.
Plants that dud out never produce a decent yield and almost always have a sub-par smell (if any) and very few trichomes. They also smoke like shit.
I'll dig through for some pictures but it's strangely difficult to photograph, even next to a comparison plant.
Any ideas as to what we're seeing? I'm looking near and far for a lab that can do testing for various viruses, the top of the list are Barley Yellow Dwarf Virus (transmitted by aphids) and Fusarium, although these syptoms don't match the syptoms of fusarium I've heard reports from commercial growers of duds testing positive.
Another possibility is a carbon drain on the plant due to an overabundance of nutrient-mobilizing fungi, @DowNwithDirT was looking into this and hopefully can swing in to shed some light (he's been busy winning cups and popping beans so we'll see)
Even still, it could be caused by some sort of change in the media when soilless media is overwatered (oxygen deprivation : overfertilization?) since this problem seems to be mostly in soilless mixes.
let's go, what you got to add?!
This post has been edited to add the following:
It seems to over-winter.
Not broadmites but often mistaken for them.
Cull and a reset didn't solve for me. It comes back given enough time. Clones from "infected" mothers are 100% in transmission.
Anybody ever cure one?