An artificial solar spectrum
substantially alters plant development compared with usual climate
room irradiance spectra
Plant responses to the light spectrum under which plants are
grown affect their developmental characteristics in a complicated
manner. Lamps widely used to provide growth irradiance emit spectra
which are very different from natural daylight spectra. Whereas
specific responses of plants to a spectrum differing from natural
daylight may sometimes be predictable, the overall plant response
is generally difficult to predict due to the complicated interaction
of the many different responses. So far studies on plant responses
to spectra either use no daylight control or, if a natural daylight
control is used, it will fluctuate in intensity and spectrum.
Jan 2010 - Cucumber
Growth under the New Standard Horti-mix Plasma Lamp shows excellent
results.
A cucumber of standard size; 6cm's in diameter,
30cm long & weighing 400 grams, was produced in 10 days less
than would normally be expected commercially
There are 24 plants on a 2.8 by 3 meter space and Sulphur Plasma
Lamp hangs on 2 meter above the plants.
Sept
2009: First Tests With Artificial Daylight Show Surprising Effect
For the first time the researchers of Wageningen
university have succeeded to let plants grow in a climate chamber
under artificial daylight. It’s a break through because now
the influence of light colours on a plant can be researched much
better. That’s important for instance for the LED research.
Also the first results show that the sunlight spectrum makes the
young cucumber plants 64% heavier than SON-T-light, at equal light
strength. Reason to look at the colour of assimilation light.
