Abstract: A mobile light exposure device that delivers light pulses to a plant material has a first emission module that has at least one light treatment panel configured to emit one or more light pulses; has a second module configured for adjusting and/or switching on an optical power density of the light treatment panel and optionally a temperature of the light treatment panel; and has a locomotive means for moving the mobile light exposure device. In operation, the mobile light exposure device attenuates impacts on plant material associated with abiotic stresses, such as stresses associated with edaphic, climatic and/or chemical factors.

Abstract: A mobile light exposure device or improving the yield and quality of biological material has a first module for emitting one or more light pulses, which includes a light treatment panel whose surface area is between 0.01 m2 and 10 m2, a second module or adjusting the optical power density of the treatment panel and optionally adjusting the temperature of the panel, and a means of locomotion for moving the device at a speed of between 1 and 10 km/h. The optical power density of the panel is between 100 W/m2 and 10,000 W/m2, preferably between 300 W/m2 and 3,000 W/m2, and the light pulses delivered to the biological material are of identical or different wavelengths and of durations less than or equal to two seconds.