What kind of light plants prefers ?

[Amy Knutson]

Perhaps he mentioned these because regular incandescent bulbs are high in 
the red spectrum but deficient in the blue which is necessary for 
vegetative growth. Flourescents and lights made especially for plants are 
adequate but lower in intensity and less efficient than high-intensity 
discharge lamps. Your choice of light system should depend on your crop 
needs. For tropical fruit-bearing plants, such as citrus or bananas, your 
best bet would probably be high-pressure sodium lamps.

-Amy Knutson
The Growing EDGE Magazine
341 S.W. 2nd Street
P.O. Box 1027
Corvallis, OR 97339
541-757-8477

On 19 Nov 1996, Anne Gillen wrote:

> Why does your friend recommend blacklight neon lights?  I thought
> that they produced wavelenghts at the blue end (ultraviolet) of the
> visable spectrum.  Ordinary white fluoresent lights are what most people I
> know use.  Chlorphyll absorbs in the blue and red portion of the
> spectrum so I would think that a blacklight would give you etiolated
> plants.  
> 
> Anne
> 
>