VEGETAL GROW DEVELOPMENT
Training light and plants - interest of light for plants
Expertise in the field of horticulture and growing plants using light
Advise and support professionals in their plant growing projects
Have a better understanding of the issues related to plant production and the use of light
VEGETAL GROW DEVELOPMENT
The benefits of light and plant training
Through a combination of theoretical and practical modules , the training program helps participants understand the basic mechanisms involved in the different components of a light spectrum. It highlights one of the last remaining factors in greenhouses , which is currently the least controlled, regulated, measured, and recorded: light.
The training is designed to be dynamic and interactive, with a strong emphasis on exchanges between the trainer and participants. This training is open to all levels of education and knowledge, and to all positions, from technicians to producers and R&D teams.
As this training is provided over 2 days, there is plenty of time for discussion. Being dynamic, it is adapted to the needs of the teams/people who participate but also it is adapted to different fields whether cell biology, in vitro culture, phytopathology, varietal creation, plant production, seed production, plant growth, speed breeding …
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VEGETAL GROW DEVELOPMENT
The basics of plant photosynthesis
The process of photosynthesis
This process , vital for plants , involves the transformation of light into chemical energy . This chemical energy allows plants to produce their own food in the form of sugar.
Light, a quantitative and qualitative energy
The light spectrum is composed of a multitude of spectral bands . These spectral bands play a more or less important role in photosynthesis. They also play a role in more specific mechanisms through the activation of specialized photoreceptors such as cryptochromes, phytochromes, and others.
The components necessary for photosynthesis
Photosynthesis is a process that requires 3 main elements : carbon dioxide (CO2), water (H2O), and light.
Action spectrum and absorption spectrum of chlorophylls
Chlorophylls are a group of photopigments that absorb certain parts of the light spectrum . There is a difference in absorption depending on the wavelength, which allows us to define an absorption spectrum. For each absorbed wavelength, a photosynthetic activity of chlorophylls can be measured, resulting in an action spectrum.
It is on the basis of these absorption and action spectra that photosynthetic lighting has been developed.
VEGETAL GROW DEVELOPMENT
The importance of light in plant development
The influence of light on germination, growth and flowering of plants
The light a plant receives plays a crucial role at every stage of its development , whether it's promoting early germination, faster and higher-quality growth, or encouraging flowering. Using LED artificial lighting, the intensity and spectral quality of light can be intelligently reflected and used to support different growth states.
The effects of different light spectra on plant development
This can involve reducing internodal spacing to create more robust plants with extensive root development by using a well-distributed spectrum with a significant blue component; or reducing the time to flowering to accelerate seed production cycles by manipulating the ratios of red and far-red (R:FR) light. UV light can also be used to induce stress in the plant to promote the production of beneficial molecules.
Generally speaking, blue is defined as important in photomorphogenesis, red for photosynthesis, and green for human vision.
VEGETAL GROW DEVELOPMENT
Lighting techniques to promote the growth of indoor plants
When we talk about indoor growing , we're referring to any cultivation done without natural light . Therefore, a specific approach to providing artificial light is essential, both in terms of quantity and quality. The types of lighting used differ from those used in greenhouses because they should not supplement, but rather replace, the solar energy provided. In indoor environments, it's also important to keep in mind that LEDs consume a significant amount of energy , making light efficiency crucial.
The luminous efficiency of a luminaire is the ratio between the luminous flux it emits and the power it absorbs. It gives an indication of the performance of a luminaire. This luminous efficiency is also linked to the light output.
Management, an important element for inducing variation
It is important to control lighting to vary the intensity and/or quality of the emitted spectrum according to the plants' developmental stages . It is therefore possible to recreate sunrise and sunset by varying the intensity of the light provided. It is also easier to manipulate the ratios between different wavelengths, thanks to precise control without external intervention.
LED lights are easier to control than traditional lights because they do not have a start-up time to respect.
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VEGETAL GROW DEVELOPMENT
Lighting technologies: Beyond traditional lighting
Since the end of the 1980s, NASA has initiated research programs with the aim of learning more about how to produce in an indoor environment. This is when the idea of vertical farming appeared. Very quickly limits were highlighted due, among other things, to excessive energy consumption of the technologies used (high pressure sodium HPS, fluorescent tubes mainly). From the beginning of the 1990s, most of the research was initiated with LED technology because it allows less heat to be released, to consume less (better luminous efficiency), to send more luminous flux, to regulate more easily and precisely.
That is why LED technology is increasingly being used from research to production.
Technologies based on halogen, mercury vapor, high pressure sodium vapor and fluorescent tubes are tending to disappear. Bans are passed as the years go by.
Protection against lighting fixtures
During the training, a regulatory aspect will be addressed, particularly regarding photobiological risks, the necessary precautions, and how to protect oneself and other users . As LED technology is evolving rapidly, it is important to be aware of existing standards and their implications.
An update on the lifespans and color rendering indices will be made.
VEGETAL GROW DEVELOPMENT
Cultivating a Bright and Green Future
The Light and Plants training program offers an in-depth exploration of an emerging field where nature and technology meet fruitfully. By understanding the nuances of photosynthesis and mastering modern lighting technologies, participants will be equipped to address the growing challenges of food production and environmental sustainability . It's a bold step toward a future where light and plants work together to nourish a constantly evolving planet.
Our answers
The three elements essential for photosynthesis are: water, carbon dioxide and light
The principle of photosynthesis is the formation of sugar from water and carbon dioxide catalyzed by light
Light allows the activation of photosynthesis which allows the creation of sugar for the plant which is essential for its development.
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