Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Relative spectral irradiance compositions of the LED spectra that were obtained with filters and used as light treatments on lettuce plants. The arrow in the upper figure indicates the wavelength of the valley using the amber LED assembly with the notch filter.
