What color light is best for plant growth?
What color light is best for plant growth?
Every grower has this question, and this issue is what every grower who wants to grow good results must carefully understand, because it is related to whether the plants you planted hard have available nutritional value.
We need to know which lights are more conducive to plant growth before we can buy the right grow lights.
Look down carefully, maybe it can help you！
Plants react differently to different colors of light.
Everyone knows plants are food factories, and most are aware that their energy source is light. This transformation of light into food is called photosynthesis. What may be news to you, however, is that the color of the light has a measurable impact on the amount of energy a plant absorbs. The reason for this is the colors in light have different wavelengths and those wavelengths, depending on whether they are short or long, provide different levels of energy.
The visible light spectrum emits light in red, orange, yellow, green, blue, indigo, and violet colors. Colors on either end of the spectrum play the greatest role in plant growth and flowering, while the yellow and green wavelengths play a lesser role.
Let us understand more carefully the role of various colors of lights in plant growth. Prepare enough for the grow light you will buy.
UV(280mm)
significantly reduces quantum yield and rate of photosynthesis
UV(315~400mm): purple
promotes pigmentation, thickens plant leaves, and may be used to prevent harmful insects
visible spectrum(440~470mm): Blue
ChlorophyⅡ absorption peaks at 439mm and 469mm. The blue spectrum is the most efficiently absorbed spectrum, promoting mainly vegetative growth.
visible spectrum(510mm): Green
Quantum absorption in the green spectrum. Little absorption is the yellow spectrum.
visible spectrum(610mm): Orange
No ChlorophyⅡbenefit. Efficiently absorbed by algae phycoerythrin and phycocyanin receptors.
visible spectrum(640~660mm): Red
ChlorophyⅡabsorption peaks at 642mm and 667mm. 660mm is the most vital wavelength for flowering. speeds up seed germination and flower/bed onset.
visible spectrum(740mm): Far Red
Emerson Enhancement Effect-quantum yield of red light and far red light, when shone simultaneously on a plant, increases the rate of photosynthesis
infrared(1000~1400mm)
No plant activity detected at this wavelength. Heat generated.
Obviously, we can see what conclusions can you draw about which color in the visible spectrum causes the most plant growth? That blue and red are absorbed more by the plant which causes the plant to grow more.
Blue light helps with the plant’s production of chlorophyll — the green pigment that traps light energy and is integral to photosynthesis. In other words, blue light is easier for a plant to absorb and use the energy in photosynthesis. So, blue light increases plant growth and makes the plant reach maturity faster.
Blue is the most important light for plant growth, because it is readily absorbed by chlorophyll and converted into energy through photosynthesis. That said, blue light on its own is not nearly as effective as blue combined with red. And you want far more red than blue light.
If the color in the visible spectrum is red or blue, then the plant will grow the most. If the color in the visible spectrum is green or yellow, then the plant will grow the least.
Then there is a question，Does the plant needs no other lights besides the red and blue lights?
No, they also need, just like the human body needs trace elements, plants also need yellow lights, green lights, etc. to help them grow up completely.
Plants make the least use of yellow light, but they do use it as well. Give them some, but they won’t need much.
Writing here, then full-spectrum lighting is clearly the most beneficial to the full development of plants, I can’t help but recommend 3 led grow lights that I have used.
Boasting an incredible 2.6 umol/J and a light output of 1700 umol/s the Pro 1700 LED provides high-intensity full spectrum light over its entire 4'x4' to 5'x5' flowering footprint. The wide 8-bar form factor helps to provide even coverage across your canopy.
This fixture is passively cooled and is built with high-quality 120-277V Philips Advance LED Drivers for optimum performance.
chilled growcraft x6
Home Engineers- Your DIY dream! Save money by building your own light fixture with easy to follow instructions and videos.
- Results- Market-leading efficiency combined with our tunable Yield Max spectrum equals unmatched performance.
- Quality- Highest build & component quality - never sacrificed for profits. ChilLED grow lights are built to last.
- Versatility- Retrofit into your environment with ease. Hands down, ChilLED lights are the most versatile on the market.
This grow light looks quite ordinary, but its efficiency is very high, it saves more electricity and energy than other lights.
Plants use all colors and that is exactly what white light provides. Because it provides all colors, and because it is the light that plants receive out in nature, white light is the best light for plants. High pressure sodium and metal halide bulbs have been growing plants successfully for decades.
Many plant functions can be enhanced and promoted just by knowing what light colors they react and respond to.
Learn more, choose a suitable led grow light to give your plants more cares.
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