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What is Photosynthetically Available Radiation?Photosynthetically Available Radiation (PAR) is the amount of light available for photosynthesis. PAR stands for photosynthetically active radiation. It is the amount of light in the 400 to 700 nanometer wavelength range, which is what plants use for photosynthesis. Why is Photosynthetically Available Radiation Important?PAR is needed for photosynthesis and plant growth. Higher PAR promotes plant growth.
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Air Quality
