What Does PPFD Stand For?

PPFD stands for Photosynthetic Photon Flux D

PPFD, or Photosynthetic Photon Flux Density, is a measure of the amount of light, specifically photons in the 400-700 nanometer range, that is available for photosynthesis in a given area over a specific time period. It is typically expressed in micromoles of photons per square meter per second (µmol/m²/s). PPFD is a crucial parameter in understanding plant growth and photosynthetic efficiency, as it quantifies the light intensity that plants utilize for converting carbon dioxide and water into glucose and oxygen.