Photosynthesis in plants depend on absorbing light energy in specific wavelengths. The rate of photosynthesis is determined by the amount of photons between 400-700nm. This photosynthesis rate is called ‘Photosynthetic Photon Flux (PPF) and it is measured in µmol/s. The efficiency of the light source for plant growth is measured in µmol/j. Chlorophyll and b-Carotene are essential in photosynthesis, allowing plants to absorb energy from light.
Chlorophyll-a has absorption peaks at 430nm and 662nm and is the primary pigment for photosynthesis in plants. It exhibits a grass-green visual color.
Chlorophyll-b has absorption peaks at 453nm and 642nm and exhibits a blue-green visual color.
b-Carotene absorption is strong between 420nm and 480nm. It is strongly colored red-orange pigment abundant in plants, fruits, vegetables, and whole grains and contributes to photosynthesis and protects plants over-exposed to sunlight by dissipating excess light energy which is absorbed as heat.
Effects of wavelengths in plant growth
Each wavelength stimulates different activities of the plant.
Pigmentation and Morphology– 315nm to 400nm Morphology changes.
Vegetative Growth – 415nm to 470 nm – Strong root growth and intense photosynthesis.
Stem Growth, Flowering and Fruit Production – 640nm to 670nm – Speeds up seed germination and encourages stem growth. 660nm is key for flowering and fruit production.
Photoperiodism – 730nm to 740 nm – Controls the internal clock of the plant. Can be used as a trigger at the end of each light cycle to promote flowering in short-day plants. All our lights are designed with a specific crop in mind and customized to the crop requirements for higher energy savings and yields.
LED Model T
A new LED light ﬁxture designed to deliver more usable energy to your plants while consuming less power
LED Model R
Lower Power Consumption, Higher Efficiency PPF.
LED Model M
Designed For Commercial Horitulture.
LED Model X
Find More Harvest, Find Led X.