Greenhouses are structures that enable the cultivation of fresh agricultural produce (such as fruits, vegetables, flowers, etc.) in qualities, quantities and time periods otherwise impossible to achieve when cultivating on the same region in the open.
The area of the greenhouse is separated from the outside environment by a transparent cover that lets sunlight through and provides a wide variety of services to the plants and to the farmer:
Depending on the natural environmental conditions, the type of crop, and the farmer's requirements, different technical solutions can be found to achieve the same goal.
Therefore, tropical regions usually have many greenhouses whose main function is to provide physical protection for the crops – to protect the plants from winds and natural harms, to protect against rain in order to control the irrigation and fertilization routine, and sometimes in order to overcome diseases and pests.
These designated greenhouses are usually simple and cheap structures, covered in thin plastic sheets, with set ventilation openings and without unnecessary means of monitoring and control.