The optinum temperatures were 20 C in S. nipponica and 25 C in A. pygmaea. The responses of transpiration to light intensity and relative humidity showed a saturated curve and an optimal one, respectively. The rate of oxygen production increased relatively rapidly at lower light intensities but leveled off at intensities greater than 5300 lux, suggesting that light intensity is a limiting factor of photosynthesis below 5300 lux. The compensation point is where light intensity is at the point where the rate of photosynthesis is equal to the rate of respiration. This is an example of a common experiment used to investigate light intensity and the rate of photosynthesis.
The light intensity range for most plants falls between 1,200 and 2,000 lumens (measurement of light intensity). The influence of humidity on photosynthesis was insignificant for both species.
At light intensities greater then 5300, however, light intensity is no longer limiting. Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities. The number of light photons hitting the chlorophyll pigments increase as the light intensity rises.
This in turn increases the rate of photosynthesis. PPFD is the measurement of the amount of light (photons) the sun “pours” onto the plants over time. Investigating the rate of photosynthesis. Instead other factors such as amount of water, NaHCO3, chlorophyll, and other reagents of photosynthesis become … PPFD is an important metric because it helps growers accurately measure the light intensity for photosynthesis at the canopy level. The whole process is so effective that in optimum conditions 90 percent of light is absorbed.