| abstract |
The present invention provides a method for suppressing the growth of algae that causes harmful red tides by using a wavelength in a specific region. There is provided a method for selectively controlling the growth of algae, which comprises irradiating light of a wavelength in a specific region that is selectively effective at a light intensity that is effective in selection. As the light source, an LED having a peak at 550 to 670 nm, preferably an LED having a peak at 590 nm may be used. By the method of the present invention, it is possible to suppress the growth of the dinoflagellates H.circularisquama and K.mikimotoi while maintaining the growth of the diatom S. costatum. The method of the present invention is useful in the cultivation of useful microorganisms such as chlorella, prevention of harmful red tides, oyster or pearl culture, and improvement of the aqueous environment. [Selection] Figure 8 |