Invisible plant stress Part II: how VPD uncovers what Part I already hinted at
In Part I, we showed how a plant can be under serious stress long before you spot anything in the greenhouse. Photosynthesis efficiency drops, energy is wasted and yield potential slips away all while the crop still looks perfectly fine.
In this follow-up article, we dive deeper into that invisible stress. This time, we zoom in on one key factor that quietly drives plant behaviour: VPD (Vapour Pressure Deficit). It may seem like a simple value, but it reveals exactly how your plant is coping with evaporation, cooling, nutrient uptake and photosynthesis.
In this new article, you’ll learn:
✅ How VPD connects to the invisible stress described in Part I
✅ What VPD really measures and why it’s essential for plant health
✅ The ideal VPD range for efficient evaporation and nutrient transport
✅ How high or low VPD pushes the plant into stress without visible signs
✅ What a real greenhouse example shows about rising VPD and falling photosynthesis efficiency
Together, Part I and Part II show a complete picture: invisible stress isn’t a mystery, it’s measurable. And with real-time insights into VPD, PAR and photosynthesis efficiency, you can act before stress impacts growth, energy use or yield.
Ready to really understand what your plants are telling you?
Read Part II and take the next step in uncovering invisible stress.
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4 Décembre 2025 à 14h17
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