In 2016, Koray proposed five major elements of plant lights, and in 2019, the element of intelligent control was added. The following article is for reference.
not a single one can be omitted
What is a good grow light? There are six elements you need to know.
It has a definite good effect on plants.
- High-efficiency and energy-saving
High-efficiency PPE and higher photosynthetic light quantum density PPFD at the same power
- Safe and reliable
In line with the safety requirements of various countries in the world
- Long life
Using long-life components, can withstand scrutiny and truly achieve long life
- Friendly to the human body
Sometimes it is necessary to work in a plant growth environment, so human perception is also very important. No harm to the human body, no stroboscopic eye protection
- Intelligent control
Intelligent control of illumination and spectrum
The most important include two points, a good spectrum, suitable or higher, and uniform lighting PPFD:
Spectrum: Light recipes for plants, each grow light manufacturer, claims its spectrum is the most effective. The difference in planting effect between a good spectrum and a not-so-good spectrum (at least 660nm of extreme red light) is less than 10%. There is no most effective spectrum, the spectrum is good or bad, depending on what you need.
If you grow vegetables with a good taste, then you can add some UV purple light. If you need a shift in the flowering cycle, you may need to add some far-red FR730. A good spectrum should be adjustable, which should contain multiple adjustable channels, UV channel, blue and white light channel, red light channel, and far-red light channel. In this way, we can adjust the spectrum reasonably according to the variety of plants and different stages of plant cultivation. Of course, adjusting the spectrum is a little bit difficult.
Only the spectrum that can be adjusted can be an effective spectrum
PPFD: In fact, PPFD is the most important data in the plant lamp. It is more important than the spectrum. Only the right PPFD can have a good harvest. Generally, indoor planting is related to light, that is, insufficient light, which can be insufficient power. With higher PPFD, the light can be reduced by dimming, while low-light products can no longer increase the illumination.
Generally speaking, the average PPFD of leafy vegetables needs 250umol/m2/s, and the tomato seedling stage needs 150umol/m2/s. The vegetative growth period requires 400-600umol/m2/s, and the flowering and blooming harvest periods require 600-1200umol/m2/s light. We can add additional carbon dioxide during the growing period and flowering period of tomatoes. The growth stages of cucumbers and peppers are basically the same as those of tomatoes. Adding carbon dioxide can also increase production.
Lighting uniformity: It can also be said that the higher the uniformity of PPFD, the better. The uniformity is related to the hanging height. The higher the hanging height, the more uniform the light will be. But the light loss will also increase with it.
2. High efficiency and energy saving
The effect of LED plant lights should reach 2.7umol/J, but almost all plant lights claim to be above 2.7umol/J, which requires us to analyze and identify them well. Generally, the plant lights of big brands will be more reliable. If it is not a brand, we need to know the brand of the LED lamp beads used (preferably with a specific model) and the number of lamp beads, which can also help identify the credibility of the light effect. Generally speaking, using the same lamp bead model, the more the number of lamp beads, the higher the efficiency.
3. Safe and reliable
Safety should be the priority, and lamps and lanterns should meet the safety requirements of various countries in the world. In addition to meeting safety requirements, it also needs to be reliable. Guaranteeing long-term work requires the strong reliability of plant lights. Lamps also heat up, and temperature rise is also an important indicator. If the temperature is too high, it will seriously affect the life of the plant lamp. Heat dissipation capacity is also an important indicator of plant lights.
4. Long life
As mentioned above, a low-temperature rise is a way to ensure long life. Use great quality components, especially the power supply, which is relatively easy to damage. You can try to use LED grow lights with brand power supplies. The lamp beads can also use international brands, such as products using Osram, Cree, Samsung, and other brand lamp beads.
5. Luminous and comfortable
It has nothing to do with plants, but the planting environment may also be the environment for our temporary works. Here, light that is friendly to the human body is also needed. Under this kind of light, we can also see the growth of plants clearly and detect diseases and insect pests in time. As for plant growing areas with UV lamps, we need to turn off the UV lamps before entering the plant growing area.
6. Intelligent control
Intelligent control of lighting and spectrum. According to the different growth stages of different plants and different planting requirements to control the lighting time, light gradient conversion, spectral gradient conversion, etc.