Hey all. I’m advising on a large indoor/greenhouse commercial grow using an in-house blended peat moss as growing medium. The usual additives such as perlite, lime and mycorrhizae are present but they’re not happy with the root mass being produced. Upon inspection of the roots I noticed somewhat brown, ill-formed mass, though the plants looked strong and the flowers were healthy and finishing nicely.
Nothing smelled or tasted funky (yes I often taste soil) and no bugs visible to the eye were present. It’s not a major problem, things overall are quite healthy, just looking to improve. I’ll go back to do some further digging but thought I’d throw it out to the community brain to see if someone has a light bulb go off before I do.
side note- the feeding system (liquid salts) is automated and calibrated regularly so my gut says its the growing medium thats not up to snuff