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Orientation of greenhouse

2017-03-22

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. The main components of greenhouse like structure, covering/glazing and temperature control systems need proper design for healthy growth of plants.


Under Indian conditions, Quonset type, multispan greenhouse is most suitable, because of its low cost and ease of fabrication. Ultra violet resistant low density polyethylene (UVLDPE) single film cladding of 200 micron thickness is sufficient for Naturally Ventilated ( NV) greenhouse and fan and pad (FP) greenhouses. This should be fully tightened by stretching on the structure to avoid fluter and tearing. It should not be nailed or screwed to the structure as it gives the chance for tearing. The T-Lock of LLock should be used for fastening the sheet at structure, as this does not tear the sheet and sheet replacement is easy.