the power of sunlight in high tunnels 2012
TRANSCRIPT
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The Photoelectric Effect
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Light Quality
Each wavelength in PAR has a different effect on photosynthesis
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Used inside or outside Micro-Climate control More light for
photosynthesis
Aluminized Knitted Fabric
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Mirrors at Work
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Light Managing Fabrics
The sunlight is filtered and emanates from different directions to the plant
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Global Light Spectrum
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Grey Fabric
Gray 50% Black Woven 50%
• Protects plants against frost radiation (up to 28 oF)
• Mimics natural tree canopy light
• Results in more branchesand internodesin certain plants.
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Pearl Fabric
• Causes higherlight diffusion
• Provides higher light quality
• Provides higher light volume
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Blue Fabric
• Results in delayed flowering in certain plants.
• Slows growth rate.
• Produces shorter stemsand compact plants.
Blue 50% Full Sun
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Red Fabric
• Increases rooting percentage.
•Results in a high growth rate in many plants.
•Enhances development of the root system
Banana plants
under Red
Banana plantsunder blacknet
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Create Production Zones
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The ultimate light is picked by the Grower
• What characteristics do you want from your plants? – Quality– Marketability– Color– Bloom– Yield
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