Process and apparatus for promoting the germination of plant...

A - Human Necessities – 01 – C

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A01C 1/00 (2006.01) A01C 1/02 (2006.01) A01G 7/04 (2006.01)

Patent

CA 2368144

Method and apparatus for promoting by light irradiation the germination of seeds and the growth of plants generated by the seeds. The seeds to be treated are irradiated with radiation that is a simulation of the solar visible spectrum. The radiation may have a wavelength range from about 400 to about 700 nm. The irradiating light may be pulsed, for ex-ample at a frequency from about 10 to 150 pulses per minute, each pulse having a duration from 0.1 to 0.9, and the intervals between pulses having a duration about from 0.1 to 6.0 sec-onds. The seeds may be cooled while irradiating them, such as to maintain the seeds at temperatures not exceeding 35 °C. Cooling the seeds may be carried out by means of a stream of gas. Image

Cette invention concerne un procédé et un appareil qui favorisent la germination de graines, ainsi que la croissance de plantes issues de ces graines, par une légère irradiation. Les graines à traiter sont irradiées à l'aide d'un rayonnement qui consiste en une simulation du spectre solaire dans le domaine du visible. La plage de longueurs d'ondes du rayonnement varie d'environ 400 à environ 700 nm. La lumière irradiante peut être pulsée, par exemple à une fréquence de 10 à 150 impulsions par minute. Chaque impulsion a une durée de 0,1 à 0,9 seconde, et l'intervalle entre les impulsions varie environ de 0,1 à 6,0 secondes. Les graines peuvent être refroidies lors de leur irradiation de manière à les maintenir à des températures ne dépassant pas 35 DEG C. Le refroidissement peut se faire à l'aide d'un flux de gaz.

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