A greenhouse structure with inadequate sunlight may need a supplemental lighting medium for proper plant growth. Choosing the perfect greenhouse lighting usually needs a basic knowledge of the light source. Greenhouse lights are a perfect choice for extending the growing season. One of the advantages of it is the potential to have crops happening year-round.
Fluorescent Plant Grow Lights can be a good greenhouse lighting source when cost is a crucial factor. These lights are in a cool-white version, blue-light emitting that is effective for seedlings.
The warm-white version produces red-spectrum that is good for flowering. Fluorescent Plant Grow Lights produce very little heat. Fluorescent bulbs are generally placed in close to the vegetables or plants for optimum results.
High intensity discharge greenhouse lights work very well for big structures, but can be costly. Nevertheless, these lights are an energy-efficient and long-lasting lighting source. . They are available in two types: High Pressure Sodium (HPS) and Metal Halide (MH). These efficient HID lights types each produce optimum light.
Metal Halide alternatives match to the blue spectrum, while High Pressure Sodium ones work with light-red. The former is better for promoting plant growth as well as keeping vegetables, flowers or plants compact. The latter is ideal suited for flowering and budding.
Conventional incandescent greenhouse lights are usually a poor option for greenhouse structure lighting. These lights emit red-spectrum light, however, are typically less effective to other lighting sources due to their high heat output and low intensity. Incandescent lights may be utilized like a secondary lighting option when installed at a distance from the vegetables or plants.
LED plant grow lights are the newest option for plants and vegetables. They are advertised to be the coolest and most efficient running plant grow lights available. But, LED Plant Grow Lights are not suggested for greenhouse lighting. These tend to give vegetables or plants uncommon appearance if viewed in natural light.
The necessity of greenhouse lighting arises when your greenhouse can’t get the optimal amount of light that is required by the plants to grow naturally. In such cases the need to arrange for greenhouse lighting fixtures is the best possible solution. These artificial fixtures provides enough light that enables the plants to grow, flowers to bloom and fruits to ripe normally.
Types of Greenhouse Lighting Fixtures:
Florescent Lights: Florescent light is the best and cost effective way of lighting a greenhouse. The lights emitted by these bulbs are conducive to normal growth of plants and flowers. For best results place the bulbs about two inches from the plants.
HID: High Intensity Discharge lamps are best suited for bigger plants and flowers. The light emitting spectrum per square foot is much more as compared to other lights, thus benefitting the pants in absorbing more light.
Metal Halide Lamps: The light emitted through metal halide lamps is almost similar to the natural light, therefore it benefits tremendously in the vegetative growth of plants. Moreover, these lights also create favorable working environment in the greenhouse.
Sodium Lamps: These lamps emit yellow lights which benefits in the growth of flowers and fruits but not favorable to work in. These lamps are a bit expensive but as effective as florescent lamps.
Incandescent Bulbs: These bulbs are not the natural choice of greenhouse owners as they get hot and are not that effective as compared to the other light variants.
Greenhouse Lighting Controls
Sometimes artificial lighting at particular times of the year in greenhouses is needed. Lighting is available in various forms, and a combination of optimal lights is usually required to cover the entire light spectrum. It’s crucial to keep in mind that people perceive light differently than vegetables or plants.
We need the sturdy response to light in the yellow or green part of the spectrum. Although the spectral quality of Sun is constant, it is greatly variable in duration, intensity, and direction. Lots of strategies, including greenhouse lighting control systems, have been developed to deal with the unwanted indoor lighting conditions.
The greenhouse lighting controls can substitute for many spectrums of Sun needed by vegetables and plants to grow.
Sunlight conditions in a greenhouse structure can vary expeditiously, humidity, affecting temperature, and illuminance. To indemnify, greenhouse ventilation, shading, heating, humidification, irrigation, and lighting components should be responsive to these instability if a controlled environment is to be achieved.
It needs excellent engineering, control devices and proper selection of equipment. It also needs an understanding of the limitations and capabilities of the greenhouse systems, controllers and sensors.
Fluorescent bulbs are effective and inexpensive. The cool bulbs convey light in the blue color that is conducive to plant growth. The warm bulbs convey red light to help in fruiting and flowering of plants. The diseconomy of fluorescent greenhouse lighting controls is the lights themselves don’t convey much light so the lights should be 2 inches away from the vegetables or plants.
High intensity discharge lamps are best for medium to large greenhouse structures. They convey more light so they are very influential. Metal halide High Intensity Discharge lights convey the blue light required and is close to natural light. High pressure sodium HID’s supply red light but are not as plausible to the eye.
There is no doubt that Led lighting greenhouse has its advantages. The spectral output is good in LEDs than in other lamps.