Lights



Light Emitting Diode (LED) lights are now being used more widely by growers all around the world for improved bud-set, increased growth, artificial growing environments and to guarantee production out of season, usually when prices are highest.

Features:
  • Different models with different light wavelengths for specific purposes and use
  • Providing plants with exactly the right light wavelength that they require for optimal growth
  • Extends the photo periods your plants need every day
  • Great way to improve growth rates and quality of your plants
  • Vastly reduced running costs when compared to Sodium or Mercury lamps

The future of LED lighting by Philips

www.lighting.philips.com

“The Powerplants Growth lights ensure we can produce all season long”

Ben Ellerton – Ball Australia
Flowering Lamp

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Philips GreenPower LED flowering lamp is the energy saving alternative for
extending day length when cultivating, e.g. bedding plants, producing cuttings from chrysanthemums, kalanchoes and other plants sensitive to the photoperiod. It is also
used to break the dormancy state of plants.

Compared to traditional incandescent lamps, this flowering lamp saves up to 80% on energy costs.

These lamps are usually spaced approx. 3 – 3.2 metres apart and suspended 2 metres above the crop.
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Philips has developed three different lamps with specific light recipes for different plants. These are:-
1. Deep red/white
2. Deep red/white/far red
3. Far red

Toplighting

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The Philips GreenPower LED toplighting solution is a new step in realizing light recipes for crop growth in the greenhouse.

The modules offers growers a wide variety of opportunities to increase crop production and improve crop quality during the year.

Toplighting can be seen as the direct replacement for High Pressure Sodium Lamps.

Toplights are available in:-
1. Deep Red / Blue
2. Deep Red / White

LED toplighting can offer typical light levels ranging from typically 40-300 μmol/m2/s in a highly efficient way. Finding your X-factors in crop growth and improving your business lead to more earnings than the energy savings only.

TLED

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Philips GreenPower TLED (25-100 μmol/m2/s) offers an extremely effective and efficient alternative in tissue culture to traditional fluorescent lamps, delivering energy savings up to 70% compared to fluorescent lighting.

GreenPower TLED also improves tissue culture growth parameters, resulting in a higher multiplication factor, better rooting quality and a shortening of the total growth cycle. To improve growth performance dedicated recipes are needed. To achieve this the GreenPower TLED is available in different recipes. These are:-
1. Deep Red/White/Far Red
2. Deep Red/White
3. White

Production Module

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Philips GreenPower LED production module is specifically designed for multilayer cultivation in conditioned environments with little or no daylight.

The module (50-250 μmol/m2/s) can replace conventional fluorescent lighting, reducing energy consumption by up to 60%.

Low radiant heat emission also allows the light source to be installed closer to the plants, thus improving space utilization.

Spectrum versions are available in:-
1. Deep Red / Blue
2. Deep Red / White
3. Deep Red

(The Deep Red / White version is designed to provide working light through the white spectrum)

Interlighting

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Philips GreenPower LED interlighting is an unique bi-directional lighting solution.

It can be applied as an interlight supplement for tall plants (such as tomatoes, peppers, cucumbers and roses) in a greenhouse, encouraging previously shaded leaves to photosynthesize and stimulating the plant’s growth potential and efficiency.

The interlighting module has a specially designed aluminum shell with a length of 2.5 metres.

The combination of LED interlighting and HID creates a flexible lighting system. This results in more efficient plant production and considerable energy savings.

Interlights are available in:-
1. Deep Red / Blue

Sodium Lamps

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Sodium lamps have been around for a while and are still being used by many growers. While not as energy efficient as LED lighting, they will benefit the growth of your plants.

High Pressure Sodium lamps are used by growers all around the world for improved bud-set, increased growth, artificial growing environments and in order to guarantee production out of season, usually when prices are highest.

LED lighting can be designed so that it provides the plants with exactly the right type of light wavelength for optimal growth. By applying lighting to your crops at specific times, plants can be stimulated to either produce more fruit, be encouraged to flower at times of naturally low light levels, or as in the case of cuttings, accelerate the speed of root establishment and plant development. For greenhouse vegetable crops such as high vine Tomatoes, the introduction of LED lighting in winter crops with associated lower light levels, will enable growers to move earlier to higher stem densities and an associated increase in production.
In order to grow and develop, all plants need to photosynthesize – the process by which plants take in Carbon Dioxide, Water and Sunlight to manufacture their food sources. By subjecting plants to specific light spectrums with LED lights, the plants can be exposed to ideal levels of photosynthetic radiation which in turn increases the rates of photosynthesis. This results in stronger and more uniform growth rates giving a higher quality plant.
LED lighting has the benefit to growers of offering optimal lighting output in terms of wavelength, whist using vastly reduced amounts of energy as opposed to existing lighting solutions such as High Pressure Sodium Lamps. In ideal conditions, savings in electricity of up to 38% can be achieved.
The basic concept behind LED lighting is to give plants a light source that they can benefit from, and the light source is configured to the wavelength that is of most benefit to the plant. Light is essential for plant growth. Natural sunlight is the cheapest source available, but for horticulture it is not always attainable in sufficient quantities. Therefore, the use of artificial light has become very common in order to increase production and quality. Plants have a completely different sensitivity to light colours than humans, and every plant has their own sensitivity for colours and intensity of light. Using the efficient light sources for plants, effective light recipes are important to obtain the optimal results in plant production.

 

Light and plant growth

Light is the visible part of the spectrum in electromagnetic radiation. All light from every light source, like the sun, contains many colours starting with a range from ultraviolet to infra-red. All the colours in this light spectrum are visible for the human eye except UV and infra-red, however they are ‘seen’ by plants.

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Plants have a different sensitivity for light than, for example, humans. We are most sensitive to green light, plants have a broader sensitivity for photosynthesis with a preference for blue and red light. So why does a plant need light? Plants use light for: Photosynthesis, growth energy and plant development, flowering, morphology etc. Both simultaneously take place in the plant and interact with each other.

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The use of LED can improve diverse growth parameters. These all depends on several factors, like crop, environmental circumstances, light recipe and many more. So depending on the crop you are growing, this can see the following benefits:- Increased production, Shortening of the total growth cycle, Better plant uniformity, Better space utility, Improved plant quality, Energy savings, Better germination rate, Higher multiplication factor, Higher survival rate in rooting, Improved/controlled stretching process, and an accelerated hardening phase.

 

 

So what effect do specific light colours have on growth?

In very general terms, using Blue light on plants can lead to: A more compact plant and a greater effect on stomatal opening with more dark colour leaves and flowers.

The use of a Red/far red ratio can lead to: More stretch in the plant when far red light is increased. However, without the presence of any blue light, growth can become excessively stretched. So it is clear that a balance of light spectrum is required when planning any lighting, which in turn has to be matched to your crops growth stage and requirements.

There is a range of lighting possibilities for individual circumstances and it need not be a matter of guess work for the grower. Philips are capable of providing a “light recipe” for growers that is designed to match specific crops and situations. This enables the grower to invest with confidence in equipment that will ultimately provide the growing conditions that he or she is seeking to improve the standards and yields of their chosen plant species, and of course, boost their bottom line in terms of increased income.

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