PPFD stands for "Photosynthetic Photon Flux Density." It measures the quantity of light that falls on a specific surface area each second and is expressed in micromoles per square meter per second (µmol/m²/s).
For plants, PPFD is crucial as it indicates the intensity of light available for photosynthesis. Different plants have varying requirements for PPFD at different stages of growth. High PPFD values are ideal for plants in their growth phase, while lower values may be suitable for seedlings or plants that require less light.
PPFD is commonly used in horticulture and indoor farming to determine the appropriate lighting levels for plant growth. Growers use this metric to ensure that plants receive adequate light intensity for optimal photosynthesis and overall health.