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I too am pondering VPD. I'm just about to cut and start drying. The "60/60" rule I've come to believe is common, suggests a very specific VPD (0.72), and it's a rather humid one. For those who don't know Air VPD, it's effectively the pressure (or lack of) the moisture in the air exerts on the...

"As current research activities have focused on symbiotic or parasitic plant–microbe interactions, other types of associations between plants and microorganisms are often overlooked. Endophytic bacteria colonize inner host tissues, sometimes in high numbers, without damaging the host or...