ABSTRACT
Greenhouse designing should be based upon sound scientific principles so as to create controlled or semi-controlled or partially controlled environment in favour of crop growth and development. An accurate orientation of protected structure can provide congenial environmental conditions for growth and development of crops grown inside the greenhouse. The most important function of the greenhouse structure and its covering is the protection of the crop against hostile weather conditions, diseases and pests. It is important to develop greenhouses with a maximum intensity of natural light inside. The structural parts that can cast shadows in the greenhouse should be minimized. The size of the greenhouse needs to be determined based on the availability of land and the cost, which may vary depending upon the types of structure specifically fabricated for the region. Cladding materials are the most important constituent of protected structures as they have direct influence on micro-climate inside the greenhouse.
