PAR

in agricultural technology, the dependence of the absorption and assimilation of energy by plants on the wavelength of light radiation is called the energy spectrum of photosynthetic active radiation (radiation). The term in English is Photosynthetically available radiation (PAR). Part of solar radiation reaching biocenoses in the range from 400 to 700 nm, used by plants for photosynthesis. This section of the spectrum more or less corresponds to the visible radiation region.