Growing vegetables is demanding in terms of temperature and relative humidity, as to induce certain phenological stages require specific temperatures and relative humidities. It is therefore interesting the use of greenhouses for production, especially for shortening the growing cycle, earliness of the crop and the posibility of growing when the climate of the area is not suitable.
Hightlight vegetable crops in greenhouses were: tomato and pepper, followed by cucumbers, courgettes and melon. Although we can find other vegetables grown in greenhouses.
So we can make the following classification:
Polytunnel greenhouses growing:
Intensive vegetables crops in climate crontrol require very technically advanced greenhouses for production with forced ventilation systems, heating systems and hydroponic systems for fertigation.
The greenhouses used for this production are:
- Chapel Greenhouses
- Gothic Greenhouses
- Asymmetric or Tropical Greenhouses
These greenhouses perform a exhaustive climate control, and can provide the optimum conditions for each phenological stage of the crop.
Traditional greenhouses growing:
This type of culture is used when environmental conditions are not favorable for cultivation in certain periods or seasons, where the climatic requirements are more demanding than the climate of the area provided.
- Parral o flat greenhouses
- Tunnel Greenhouses
- Greenhouses Backbone Structures
The main goal of growing vegetables under mesh is the protection against unfavourable weather conditions, providing some protection against pests and precocity. The drawback lies in the climate control, since this kind of greenhouses only modify the weather conditions briefly, which are at the mercy of the weather in the area.
Which greenhouse is the most suitable for vegetables growing?
From the technical point of view the best reccomendation is Polytunnel Greenhouse production, which make possible better climate control and better control of pests and diseases.
Depending on the crop in question will have the following systems:
- Soil Growing: plantings on the floor. This type of culture, eventually, leads to problems in the root of diseases due to the continuous production of the same species in a particular area.
- Growing in bags or containers of substrate: eliminates the problem of soil depletion, since, depending on the type of substrate used, substrate cleaning tasks can be performed.
- Pure Hydroponics grown: in containers or growing tables on nutrient solutions.
- Trays Crop: normally used in nurseries.