PPFD (Photosynthetic Photon Flux Density)

Photosynthetic Photon Flux Density (PPFD) is a measurement that quantifies the amount of photosynthetically active photons (light) reaching a specific area per unit of time. It is expressed in micromoles of photons per square meter per second (μmol/m²/s) and is a crucial metric for assessing the light intensity available for plant photosynthesis and growth.

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