Artificial lighting systems:

Covering the photosynthetic light flux integrals complementary to those provided by solar radiation in periods with low and/or deficient intensity (winter months), with the aim of increasing the rate of photosynthesis of the greenhouse plants, and control the photoperiod in different ornamental species whose flowering can be influenced by the duration of the number of daily hours with light (chrysanthemums, paniculatas, euphorbias, begonias, etc.), are examples of the main applications of the artificial lighting in greenhouses.

In Novedades Agrícolas S.A., we install supplementary lighting and photoperiod installations with the latest technologies on the market to improve the production of your greenhouse and so that your crop is ready at the most appropriate moment.

Photoperiod lighting installations:

Several species of floral plants can be induced to “flower” or to “vegetate” by diminishing or increasing the number of hours of light. Each species and variety has its critical photoperiod and by suitable management of the photoperiod it is possible to have the production converge with the most interesting dates for the market.

This type of installation is usually achieved with incandescent lamps for reasons of economy. In some cases the “luminous stimulus” is carried out cyclically, covering a larger surface with the same electric power.

A photoperiod lighting installation consists of: 

• Luminaires: of the incandescent type, with electric power rating of 100 to 150 W.

• Cables and electric conduits.

• Electric switchboard: it holds the electrical protection for lines and equipment.

Assimilation lighting installations:

Of the total solar radiation, a fraction of between 40 and 45% is usable by the crops for being photosynthetically active radiation, or PAR, because the photosynthesis process for most of the superior plant species employed in greenhouse horticulture only makes use of the light in the emission band with wavelength of 400 to 700 nanometres.

The use of supplementary lighting for improving the photosynthetic assimilation is used in latitudes with reduced light quality and intensity during the winter. The treatments last for several hours, in the daylight period and at night. An assimilation lighting installation consists of:

• Luminaires: of the high-pressure sodium discharge type, 400 – 600 - 1000 W.
• Cables and electric conduits: they allow the connection and the support of the luminaires over the working plane of the crop with the aim of making the lighting uniform.
• Electric switchboard: it holds the electric protection for lines and equipment.

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