Growing under greenhouse
In general growing in greenhouse is done for two criteria:
• Growing out season;
• Growing for more time than in open field (is possible growing fruit and vegetables early or late)
The first hypothesis is that classical literature and includes the construction of a structure that would affect the climate inside the greenhouse. In this case the type of greenhouse to building depends very much on the prevailing weather conditions and the needs of the species to grow. It’s greenhouse iron‐glass that can be grown in full winter season, capable of Δ temperature of 18‐20 ° C with hot water heating, heat shields and with 1000 ppm carbon dioxide enrichment of' the air.
• Growing out season;
• Growing for more time than in open field (is possible growing fruit and vegetables early or late)
The first hypothesis is that classical literature and includes the construction of a structure that would affect the climate inside the greenhouse. In this case the type of greenhouse to building depends very much on the prevailing weather conditions and the needs of the species to grow. It’s greenhouse iron‐glass that can be grown in full winter season, capable of Δ temperature of 18‐20 ° C with hot water heating, heat shields and with 1000 ppm carbon dioxide enrichment of' the air.
These structures are very common in Northern Europe for the cultivation of horticultural and floricultural crops of high
quality and quantity. In this case costs per m2 are very high: 130-150 euro (€ 1.300.000-€ 1.500.00 per hectare). The level of knowledge required is obviously very high and yield it’s also high: 300-350 euros m2 (€ 350.000/ha).
The second hypothesis provides crops under structure in the iron and plastic, much cheaper and allows an advance / postponement of cultivations about 1-2 months compared to the open field.
These structures if the climate permits are able to have a production of 30‐40 €/m2 (30 ‐ 40,000 €/ha) with a facility cost of 20 €/m2 (200,000 €/ha)
Solar Greenhouses
Another exceptions are solar greenhouses that have been developed in Italy in recent years thanks to the incentives on photovoltaic technology. The purpose of these structures is the production of electricity from the sun and crops are a "complement" necessary to the provision of the state contribution account in the payment of energy.
The cost of these structures depends on the characteristics of the solar panel and the technology what is meant to adopt in crops. In these greenhouses crops
are a major setback in the development and production by the lack of light for many months a year, for these reasons only a few crops are adapted to be grown
in these greenhouses, and cultivation must be tested in each area. The yield/ha and the costs ranging so much depending on the area of cultivation, time of year
and technology involved.
Sunthesis is advisor in all these companies above mentioned, having specific experience in the greenhouse’s crops.
are a major setback in the development and production by the lack of light for many months a year, for these reasons only a few crops are adapted to be grown
in these greenhouses, and cultivation must be tested in each area. The yield/ha and the costs ranging so much depending on the area of cultivation, time of year
and technology involved.
Sunthesis is advisor in all these companies above mentioned, having specific experience in the greenhouse’s crops.
