The propagation of organisms with mycelia is suppressed more efficiently than in the past.By irradiating light 90 with the hyphae 92 with lightThe hyphae suppressor 1 suppresses the growth of hyphae 92A violet light source 12 that emits light contained within a range of peak wavelength of 380 nm to 410 nm or lessAndA first light source section 10 having at least one of the UVB light sources 15 that emit light contained in a range in which the peak wavelength is less than 280 nm and less than 350 nmA blue light source 22 emitting light contained in a range in which the peak wavelength is less than 350 nm and less than 380 nmAndA second light source section 20 having at least one of the UVA light sources 25 for emitting light contained in the range of 415 nm to 480 nm or less is provided.Diagram【課題】菌糸を有する生物の増殖を従来よりも効率良く抑制する。【解決手段】菌糸９２を有する生物９０に光を照射することで、菌糸９２の成長を抑制する菌糸抑制装置１は、ピーク波長が３８０ｎｍ以上４１０ｎｍ以下の範囲に含まれる光を出射する紫色光源１２、及び、ピーク波長が２８０ｎｍ以上３５０ｎｍ未満の範囲に含まれる光を出射するＵＶＢ光源１５の少なくとも一方を有する第１光源部１０と、ピーク波長が３５０ｎｍ以上３８０ｎｍ未満の範囲に含まれる光を出射する青色光源２２、及び、ピーク波長が４１５ｎｍ以上４８０ｎｍ以下の範囲に含まれる光を出射するＵＶＡ光源２５の少なくとも一方を有する第２光源部２０とを備える。【選択図】図１
