Thanks to the handling of values of the spectrum of light and great energy savings reported, LED lighting habit is driving cultivation in interior and exterior. The inner culture led is already present
Special for growth led lighting, offers many advantages in addition to the energy savings. The inner culture led gives possibility to manipulate the spectrum of light receiving plants growing under lights led, exponentially increases the production of crops without compromising quality with respect to other forms of traditional lighting. This technological advancement, it is advisable to replace the systems of photosynthetic lighting from incandescent lamps, LEDs that emit Spectra separately. LED devices consume up to 5 times less energy, have a much greater lifespan and do not generate excess heat damaging to plants. The case of the Red LEDs, have an extra advantage, which repel insects decreasing the use of toxic crops.
For the process of photosynthesis, all plants use ranges of wavelength 400nm light (light of growth) until the 700nm. The spectrum of the radiation received can affect both plant growth and flowering; and in the case of plants with medicinal uses, it can affect the taste, smell and even the pharmaceutical and nutritional value. This responsible for excitation of chlorophyll photosynthetic radiation, is greater in the red band of the spectrum as the blue, so that plants use more efficiently the radiation in the region of the red. Most of the sunlight that capture plants is converted into heat and only red and blue light is essential for their growth. The inner culture led helps remove those wavelengths that are inactive for photosynthesis according to ZEPHYRLEDLIGHTS.COM.
In this graph you can see the parts of the spectrum “visible” or usable by humans (B) and by plants, response to photosynthesis (A) line and the line that marks the Spectra where plants are better developed (C).
Basically the LEDs that would need a plant to live and develop fully would be the following:
White LEDs: simulate the brightness
Red LEDs: responsible for providing necessary flowering infrared rays
Blue LEDs: provide necessary UV rays for growth
In a luminaire have yellow color components or not, have more reds or oranges or any other small detail, will make the difference between lamp optima and poor performance.
Lighting technologies used so far to crops have been inefficient. Traditional luminaires for high-pressure Sodio(desde ahora HPS), halide metálicos(desde ahora MH), fluorescent (since now fluo) and domestic (CFL) primary, or compact fluorescent type Agrolite are much less efficient energy and light that LED luminaires. Only about 35% of the power and 10% of the emitted light of metal halide is used by plants; in in the case of lights LED 90% of the light from the lamps can be absorbed by plants.
LEDs have reached a spectacular power and capacity. Thanks to its optimization have been a source of really economic irradiation for the growth of plants, perfect for use in greenhouses, chambers of controlled growth (hydroponic or aeroponic) or in beds of cultivation on soil or substrate. They are also suitable in systems underwater like fish tanks or crops of algae. That they do not require ballasts (increasing the savings), the LEDs allow producers to situate luminaires close to plants do not produce heat. Colors LEDs has another benefit: the lights can be combined depending on the specificity of the culture, or better yet, change the light spectrum accompanying the process of growth and flowering. Various studies have shown that the ideal proportion is twelve 660nm Red LEDs, more six Orange 612 nm LEDs and a blue 470 nm, so that the proportion of red and orange light blue light is 6-8%. During plant growth is preferable to lighting with blue LEDs, where light has a wavelength close to 400 nm; In contrast to the flowering process and maturation of fruits, out of proportion to the 660 nm red is required.
Thanks to the use of LED lighting in crops, the decrease in the cost of electricity can be 25 times less regarding the fluorescent. The greatest contribution of technology in this field comes from researchers at NASA, who for three years have used LEDs in a devised system of vegetables to grow in space. “Growleds” lamps are produced in many designs and sizes depending on the intended use. Usually the luminaires provide sufficient coverage Spots of lights are directional and can be coupled to different crop sizes. Almost all plants respond to perfection, but above all the tomato, pepper, basil, lettuce, violets, orchids, roses. All food-producing plants respond particularly well, so you can have fresh fruit throughout the year in your home at a low cost. There are in the average comments that the Growleds produce bad results, but nothing is further from the truth! Yes they work but must know how to distinguish the good quality product: LED must be high-performance and the proper wave length in the right proportion.