A greenhouse (also called a glasshouse, or, if with sufficient heating, a hothouse) is a structure with walls and roof made chiefly of transparent material, such as glass, in which plants requiring regulated climatic conditions are grown.
Greenhouses are frames of inflated structure covered with a transparent material in which crops are grown under controlled environment conditions. Greenhouse cultivation as well as other modes of controlled environment cultivation have been evolved to create favorable micro-climates, which favours the crop production could be possible all through the year or part of the year as required. Greenhouses and other technologies for controlled environment plant production are associated with the off-season production of ornamentals and foods of high value in cold climate areas where outdoor production is not possible. The primary environmental parameter traditionally controlled is temperature, usually providing heat to overcome extreme cold conditions. However, environmental control can also include (Greenhouses in Tirunelveli) cooling to mitigate excessive temperatures, light control either shading or adding supplemental light, carbon dioxide levels, relative humidity, water, plant nutrients and pest control.(Greenhouses in Tirunelveli)
The use of the greenhouse is mainly for producing seasonal and non-seasonal crops, for the production of high-quality flowers, vegetables, and the preparation of nursery prepared by tissue culture.(Greenhouses in Tirunelveli)
The design of greenhouse should be based upon sound scientific principles which facilitates controlled environment for the plant growth. Controlled environment plant production systems are used widely throughout the world to produce plant materials and products at a time or place, or of a quality that can not be obtained outdoors. Controlled environment agriculture requires far more capital investment per unit area than field agriculture and thus must essentially be correspondingly more intensive to justify investment costs. The greenhouse is a structure covered with a transparent material for admitting natural light for plant growth. (Greenhouses in Tirunelveli) The main components of greenhouse like structure, covering/glazing and temperature control systems need proper design for healthy growth of plants.
The duration of crop in greenhouse is the key to make the greenhouse technology profitable or the duration of production in greenhouses should be short. In this context, use of containers in greenhouse production assumes greater significance. The containers are used for the following activities in greenhouse production.
Tirunelveli (Tamil: [tiɾɯnelʋeːli] (About this soundlisten)) also known as Nellai and historically (during British rule) as Tinnevelly, is a major city in the Indian state of Tamil Nadu. It is the administrative headquarters of the Tirunelveli District. It is the sixth-largest municipal corporation in the state after Chennai, Coimbatore, Madurai, Tiruchirappalli and Salem. Tirunelveli is located 700 km (430 mi) southwest of the state capital Chennai, 58 km (36 mi) away from Thoothukudi and 73 km (45 mi) from Kanyakumari. The downtown is located on the west bank of the Thamirabarani River; its twin Palayamkottai is on the east bank. Palayamkottai is called as the Oxford of the south India. It is a hub of many schools, colleges and many important government offices.
Tirunelveli is an ancient city, and is more than 2,000 years old. Tirunelveli is believed to be an ancient settlement of great importance. It has been ruled at different times by the Early Pandyas, the Cheras, the Medieval Cholas and Later Cholas, the later Pandyas, the Vijayanagar Empire and the British. The Polygar War, involving Palaiyakkarars led by Veerapandiya Kattabomman and forces of the British East India Company, was waged on the city's outskirts from 1797 to 1801.Geographical Data
The Tirunelveli District is located in the world map, between 08o 8’ and 09o 23’ latitude and 77o 09’ and 77o 54’ longitude. The total geographical area of the district is 6,823 sq. km.Boundaries
The district is surrounded by the State of Kerala, Gulf of Mannar and the districts of Virudhunagar, Thoothukudi and Kanniyakumari.