āĻāϞā§āϰ āĻŦāϰā§āĻŖāĻžāϞ⧠āĻŦāϞāϤ⧠āĻāĻāĻāĻŋ āĻā§āϰ⧠āϞāĻžāĻāĻ āĻā§āϏ āĻĻā§āĻŦāĻžāϰāĻž āύāĻŋāϰā§āĻāϤ āϤāϰāĻā§āĻāĻĻā§āϰā§āĻā§āϝā§āϰ āĻŦāĻŋāϤāϰāĻŖāĻā§ āĻŦā§āĻāĻžāϝāĻŧāĨ¤ PAR āϏā§āĻŽāĻžāϰ (400â700 nm) āĻŽāϧā§āϝ⧠āĻŦāĻŋāĻāĻŋāύā§āύ āϤāϰāĻā§āĻāĻĻā§āϰā§āĻā§āϝ āĻāĻĻā§āĻāĻŋāĻĻā§āϰ āĻŦā§āĻĻā§āϧāĻŋāϤ⧠āĻŦāĻŋāĻāĻŋāύā§āύāĻāĻžāĻŦā§ āĻĒā§āϰāĻāĻžāĻŦ āĻĢā§āϞā§: āύā§āϞ āϤāϰāĻā§āĻāĻĻā§āϰā§āĻā§āϝ (400â500 nm) āĻāύ āĻāĻĻā§āĻāĻŋāĻā§āĻ āĻŦā§āĻĻā§āϧāĻŋāĻā§ āĻā§āϏāĻžāĻšāĻŋāϤ āĻāϰā§, āϞāĻžāϞ āϤāϰāĻā§āĻāĻĻā§āϰā§āĻā§āϝ (600â700 nm) āϏāĻžāϞā§āĻāϏāĻāĻļā§āϞā§āώāĻŖ āĻāĻŦāĻ āĻĢā§āϞ āϧāĻžāϰāĻŖāĻā§ āĻā§āϏāĻžāĻšāĻŋāϤ āĻāϰ⧠āĻāĻŦāĻ āĻĻā§āϰ-āϞāĻžāϞ āϤāϰāĻā§āĻāĻĻā§āϰā§āĻā§āϝ (700â800 nm) āĻāĻžāĻŖā§āĻĄā§āϰ āĻĒā§āϰāϏāĻžāϰāĻŖ āĻāĻŦāĻ āĻāĻžāϝāĻŧāĻž āĻĒāϰāĻŋāĻšāĻžāϰ āĻĒā§āϰāϤāĻŋāĻā§āϰāĻŋāϝāĻŧāĻžāĻā§ āĻĒā§āϰāĻāĻžāĻŦāĻŋāϤ āĻāϰā§āĨ¤ āĻĢā§āϞ-āϏā§āĻĒā§āĻāĻā§āϰāĻžāĻŽ āĻāϞāĻāĻĄāĻŋ āĻāĻāĻžāϧāĻŋāĻ āϤāϰāĻā§āĻāĻĻā§āϰā§āĻā§āϝ āĻāĻāϤā§āϰāĻŋāϤ āĻāϰ⧠āĻĒā§āϰāĻžāĻā§āϤāĻŋāĻ āϏā§āϰā§āϝāĻžāϞā§āĻā§āϰ āĻ āύā§āϰā§āĻĒ āĻāϰāĻžāϰ āĻā§āώā§āĻāĻž āĻāϰā§āĨ¤
āĻŽā§āϞ āϤāĻĨā§āϝ
- Blue (400â500 nm): compact growth, thick leaves, strong root development
- Red (600â700 nm): peak photosynthetic efficiency, flowering trigger (short-day plants)
- Far-red (700â800 nm): stretching, canopy penetration, Emerson enhancement effect
- Green (500â600 nm): partially used by plants; penetrates deeper than red/blue
- Full-spectrum LEDs mimic natural sunlight; white LEDs use phosphor conversion
- Red:Blue ratio affects plant morphology â higher blue = more compact plants