Vertical Farming Podcast

Why Farmers Get Humidity Completely Wrong

The video tackles a common misconception among farmers: that relative humidity can be directly controlled like temperature. Using a bank‑loan analogy, the presenter argues there is no simple dial for humidity because it is a function of two variables—air temperature and absolute moisture content. Key insights highlight that any attempt to “set” humidity inevitably changes either temperature, moisture, or both. Air‑conditioning units illustrate this dual effect: they cool the air while simultaneously removing moisture, thereby shifting relative humidity without a single control knob. A memorable quote from the talk underscores the point: “controlling relative humidity directly really doesn't exist as mathematical or science.” The speaker also stresses that relying on equipment alone, without understanding the underlying variables, leads to misguided climate management on farms. The implication for agricultural operations is clear: growers should focus on managing temperature and moisture independently rather than chasing a target humidity level. Properly aligning irrigation, ventilation, and heating strategies can improve crop health, reduce energy waste, and enhance overall productivity.