As a researcher in a commercial greenhouse, I must highlight that while VPD is critical, many overstate wind's role; excessive fan speed actually causes stomatal closure as a stress response, reducing transpiration. Temperature must be optimised, not maximised, to balance growth with water use efficiency. My data shows that leaf age and root-zone moisture are often bigger daily factors than wind alone. I learned this after losing a batch of marigolds—dil ko dukh hua—by following textbook wind advice while ignoring the soil sensors I'd neglected.
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