Polyhouse
Encyclopedia
Polyhouse is a protective shade made up of polythene used for growing high value agricultural products.
It is semi-circular, square or elongated in shape. Temperature
, humidity
, ventilation
of air are controlled by the equipments fixed in the polyhouse.
Crops grown in the polyhouse are protected from intense heat, bright sunlight, strong winds, hail
stones and cold waves
. Polyhouses are used in floriculture
and nurseries.
Besides from this polyhouses are also used for horticulture, though the primary and best is floriculture when considering the investment. A prime example would be the ability to grow vegetables/fruits when its usually off season. In a place like India, the inability to grow tomato during rainy season allows its price to soar during the monsoon. This is spotted as an ideal time to grow tomato in poly houses. This is because the poly house is designed in such a way to provide ideal climate to the crop of your choice. Every factor influencing a crop can be controlled in a poly house. For eg. If you have your poly house in a tropical zone, temperatures are prone to soar above all normal levels. In such cases, foggers/misters are used to reduce the temperature. This does not enhance the humidity levels in the poly house as the evaporated droplets are almost immediately ventilated to open air. High tech poly houses even have heating systems as well as soil heating systems to purify the soil of unwanted viruses, bacteria etc.
It is semi-circular, square or elongated in shape. Temperature
Temperature
Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. Objects of low temperature are cold, while various degrees of higher temperatures are referred to as warm or hot...
, humidity
Humidity
Humidity is a term for the amount of water vapor in the air, and can refer to any one of several measurements of humidity. Formally, humid air is not "moist air" but a mixture of water vapor and other constituents of air, and humidity is defined in terms of the water content of this mixture,...
, ventilation
Ventilation (architecture)
Ventilating is the process of "changing" or replacing air in any space to provide high indoor air quality...
of air are controlled by the equipments fixed in the polyhouse.
Crops grown in the polyhouse are protected from intense heat, bright sunlight, strong winds, hail
Hail
Hail is a form of solid precipitation. It consists of balls or irregular lumps of ice, each of which is referred to as a hail stone. Hail stones on Earth consist mostly of water ice and measure between and in diameter, with the larger stones coming from severe thunderstorms...
stones and cold waves
Cold snap
Cold snap is used in two ways to describe climate:*in meteorology, a period of intensely cold and dry weather, often occurring during an Ice Age...
. Polyhouses are used in floriculture
Floriculture
Floriculture, or flower farming, is a discipline of horticulture concerned with the cultivation of flowering and ornamental plants for gardens and for floristry, comprising the floral industry...
and nurseries.
Besides from this polyhouses are also used for horticulture, though the primary and best is floriculture when considering the investment. A prime example would be the ability to grow vegetables/fruits when its usually off season. In a place like India, the inability to grow tomato during rainy season allows its price to soar during the monsoon. This is spotted as an ideal time to grow tomato in poly houses. This is because the poly house is designed in such a way to provide ideal climate to the crop of your choice. Every factor influencing a crop can be controlled in a poly house. For eg. If you have your poly house in a tropical zone, temperatures are prone to soar above all normal levels. In such cases, foggers/misters are used to reduce the temperature. This does not enhance the humidity levels in the poly house as the evaporated droplets are almost immediately ventilated to open air. High tech poly houses even have heating systems as well as soil heating systems to purify the soil of unwanted viruses, bacteria etc.