Salad Crop Production Under Different Wavelengths of Red Light-emitting Diodes (LEDs) Dynamac Corporation, Kennedy Space Center

Format:

Conference/Event

Author/Creator:

Goins, Gregory D., author.

Conference Name:

31st International Conference On Environmental Systems (2001-07-09 : Orlando, Florida, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2001

Summary:

Light-emitting diodes (LEDs) represent an innovative artificial lighting source with several appealing features specific for supporting plants, whether on space-based transit vehicles or planetary life support systems. Appropriate combinations of red and blue LEDs have great potential for use as a light source to drive photosynthesis due to the ability to tailor irradiance output near the peak absorption regions of chlorophyll. This paper describes the importance of far-red radiation and blue light associated with narrow-spectrum LED light emission. In instances where plants were grown under lighting sources in which the ratio of blue light (400500 nm) relative to far-red light (700800 nm) was low, there was a distinct leaf stretching or broadening response. This photomorphogenic response sanctioned those canopies as a whole to reach earlier critical leaf area indexes (LAI) as opposed to plants grown under lighting regimes with higher blue:far-red ratios. In many instances, the salad crops grown under LEDs were just as productive as crops grown under broad-spectrum light, largely as a consequence of more efficient light interception during early growth

Notes:

Vendor supplied data

Publisher Number:

2001-01-2422

Access Restriction:

Restricted for use by site license