US 12,433,204 B2
Light source for plant cultivation and method for plant cultivation
Se Ryung Kim, Gyeonggi-do (KR)
Assigned to Seoul Viosys Co., Ltd., Gyeonggi-do (KR)
Filed by SEOUL VIOSYS CO., LTD., Gyeonggi-do (KR)
Filed on Nov. 12, 2020, as Appl. No. 17/096,049.
Claims priority of provisional application 62/934,803, filed on Nov. 13, 2019.
Prior Publication US 2021/0137021 A1, May 13, 2021
Int. Cl. A01G 22/15 (2018.01); A01G 7/04 (2006.01)
CPC A01G 7/045 (2013.01) [A01G 22/15 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A plant cultivation method comprising:
planting germinated seeds of a selected plant in a hydroponics system, wherein the selected plant comprises lettuce; and
alternately performing main light treatment and dark treatment,
the main light treatment supplying main light to the selected plant, and
the dark treatment cutting off supply of the main light to the selected plant;
wherein the main light has at least two peak wavelengths in a visible light spectrum and an intensity of the main light has a greater than 198 PPFD (μmol/m2/s); and
supplying auxiliary light in an UV spectrum to the selected plant, wherein the auxiliary light includes a highest peak wavelength in the UV spectrum having an auxiliary peak luminous intensity between ⅕ and ⅔ an intensity of each of two of the at least two peak wavelengths in the visible light spectrum, and
wherein the two of the at least two peak wavelengths include a range of wavelengths located therebetween having a maximum luminous intensity at least three times lower than each of the two of the at least two peak wavelengths.