Sure, by now we are all aware that LED grow light does wonderful things for plant growth. Plants grow quicker and healthier than under other, traditional lighting methods such as HPS. If the LEDs are good, plants can grow even better than under natural sunlight. But why are they always purple/pink?
All light sources contain a spectrum of colors within it – some light sources contain some of the colors, some contain all. Sunlight contains all spectrum colors and because of that feeds plants with all information they need. Additionally, because of the presence of all spectrum colors, it appears color-free to human eyes.
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The rapid increase in the use of LED technology for horticultural lighting applications has also raised discussions regarding the potential human health risks compared to legacy lighting solutions. This is somewhat due to the differences in visual appearance (colour and intensities) of the light in such applications.
At a high enough intensity, any type of light, regardless of the source has the potential to harm the eyes or skin through prolonged thermal exposure or photochemical effects of ultraviolet, blue light &/or infrared emissions. Shorter wavelength, higher energy blue light (400nm and 500nm) can cause retina damage through a combination of photochemical action and high intensity. Higher concentration light sources will provide more direct energy and a higher risk. For example, staring at a clear blue sky (scattered blue light) is a low risk, while looking directly at the sun can begin irreversible damage almost immediately.
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What You Should Know About LED Grow Lights
Energy-efficient LED grow lights are the lighting of the future of agriculture. They are not only economic in their use but they produce better plants as well, in comparison to all traditional lighting options. In the texts below you can read how the LED grow lights work, how they affect plant growth and what advantages the LED lights have over the thus far most widely used artifical lighting in agriculture – HPS lamps.
What are LEDs and how do they work?
LEDs (Light Emitting Diode) are small electronic components made of two different types of semiconductor material, one having a negative charge, called electrons, and the other having a positive charge, called holes. When voltage is properly applied over an LED, electric current starts to flow through it making electrons and holes start to collide releasing energy in the form of photons, light quanta, in a process called recombination. The first LEDs had relatively low light output and limited selections of colors while modern LEDs have high brightness and come in varieties of colors in visible, infrared and ultraviolet spectral ranges.
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To use LED grow lights, you must first determine three points: one is that plants need supplemental light, the other is that plants deserve supplemental light, and the third is that plants are suitable for use of LED plant growth lights for supplemental light. Needless to say, almost all plants need to participate in photosynthesis for photosynthesis, so almost all plants can use LED plant lights to fill in light; plants are worthy of light supplementation, and the plants themselves have high value or are In the future, it has high value, which is to engage in scientific research; suitable for the use of LED grow lights mainly refers to bushy dwarf plants. , Of course, if it is used to cultivate seedlings, it is also a very good choice.
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The LED red and blue plant light adopts the ratio of red and blue lamp beads. This is mainly because a single LED chip cannot maturely "integrate" different wavelengths of light on the same chip.
Since 2013, LED chips and packaging processes have become more and more mature, and full-spectrum LED grow lights have begun to appear in the market, but the market response has been tepid. Due to the disproportionate cost of lamps, electricity bills and crop yields, as well as the limited level of agricultural modernization in China, the acceptance of LED grow lights is low, and the use of LED grow lights is also mostly used in modern vertical farms.
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Plant light time is the time when plants receive natural light or artificial LED grow lights. Light intensity and light quality will have their own changing rules, and the same is true for light time:
(1) The light time in summer is longer than that in winter (2) The day and night are equal all year round near the equator (3) The days are longer in summer and the nights are shorter (4) The days are shorter in winter and the nights are longer
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The wide range of types, prices and qualities of LED grow lights can make your choice more challenging. So how do you choose the most suitable one among all the LED grow lights? You can first understand the next four points.
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1. Knowledge of LED lamps for planting plants
- Different wavelengths of light have different effects on plant photosynthesis. The wavelength of light required for plant photosynthesis is about 400-700 nm. Light at 400-500nm (blue) and 610-720nm (red) contributed the most to photosynthesis.
- Blue (470nm) and red (630nm) LED tube lights for plant growth can provide the light that plants need. Therefore, the ideal choice for LED tube lights for growing plants is to use a combination of these two colors. In terms of visual effects, the combination of red and blue plant growth lights presents a pink color.
- Blue light can promote the growth of green leaves; red light can help flowering and fruiting and prolong the flowering period.
- The ratio of red and blue LEDs of LED tube lights for plant growth is generally between 4:1--9:1, generally 4-7:1.
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LED Grow Light is Use in supplement light for plant growth, suitable for tomato, cucumber, pepper, cannabis, rose and other plant, application in indoor supplement light, the place with short outdoor lighting time and insufficient light.
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