Hey gang. I’ve noticed some stem rotting issues in what now is mid flower. These plants are in a greenhouse planted in the ground. I notice that the issue starts at the point of where a leaf has been plucked from the plant but a little bit is left to rot thus starting to rot the stem/branch. Is there anything that can be done to stop this rot from systemically spreading? I do think this will lead to some bud rot issues also. As always thanks!
How it starts:
What it turns into:
Sorry to say there is not a lot you can do about it.
The problem originates in your soil and will eventually affect the whole plant. I am betting your soil stays quite wet and doesn’t drain well.
Solarization of the soil is one way to defeat the fungus in the soil but not something you can do at this point, but an option for future grows.
You could try to use a spray fungicide to slow the process enough to get you through the grow but no guarantee’s in that.
Wow I have never seen a dead leaf stem turn into a full rot issue. Maybe rub a bit of sulfur on those spots.
Grow cultivars that have been proven to grow well in high humidity and make seeds with them.
Also happened to me while not completely plucking leaves while trimming and leaving some stem behind 
, now I always cut from the base. Chop one node down every rotted stem before it spreads, sorry for your loss … 
Dead/hollow stems will not remain alive and can not fight off rot and pathogens. Therefore they will become active vectors of disease and more to the rest of your plant!
There are a lot of methods to deal with this but I personally follow what @George says and chop at the base. @slownickel on Instagram is a good source of information.
In the case of stem rot you’re right, but as this starts in a wound I am thinking more on bothrytis, not stem rot, in which case it’s not necessary to chop the whole plant. Chopping the plant partially and checking the stem’s interior would help to find out what’s really going on and avoid unnecessary losses … 
I managed to clean up a fungal attack that was something like that. I irrigated with 3% Hydrogen Peroxide, didn’t hurt the plant at all.
Cheers
G
I meant chop at the base of leaf/stem
trashed a real nice auto because of stem rot. sorry man.
Understood, I suggested one node below the affected one for safety reasons …
I’ll join the panel of experts…
It’s humidity. Your soil is likely fine.
If can, add fans & heat at night… black barrels of water in NE corner of greenhouse will hold heat but no substitute for powered heat.
Sorry, man.
