A fast and reliable method to measure the activity
of photosynthetic herbicides in intact plants

Chlorophyll Fluorescence

Fig. 4. Mechanism of fluorescence

A schematic diagram of the mechanism of fluorescence emission: 1) An absorbed photon (ABS) causes an electron to jump from the ground level to the excited state level; 2) The excited electron returns back to the ground level emitting a photon of fluorescence (FL).

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