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Understanding VPD: The Science Behind Optimal Growth
1. What is VPD? 1.1 Definition of VPD VPD, or Vapor Pressure Deficit, is a crucial metric in plant cultivation. It measures the difference between the amount of moisture in the air and the maximum moisture the air can hold. Essentially, it reflects how “hungry” the air is for water. 1.2 The Science Behind VPD…