The real difference only exists between shadehouses and greenhouses as glasshouses and hot houses belong to the category of Greenhouse. Shadehouses sometimes look like a green house. Shadehouses usually have shade cloth over it. They are used to protect cultivated plants from excessive heat, light or dryness
Polyhouse is a inflated structure cladding with UV Film in which required lux intensity, heat and humidity is optimally maintained for plants. Its a structure under which cultivation is possible round the year and also in adverse weather conditions. The solar radiations pass through it and trap the thermal energy inside the greenhouse, which is emitted by the objects that are kept inside, this phenomena is known as “greenhouse effect”.
Types of Greenhouse
Naturally Ventilated Greenhouse made out of bamboo/ wood / GI pipes
Greenhouse with Fan and Pad Cooling System.
Hi-tech or fully controlled Greenhouse.
Shadenet house is a framed structure made of materials such as GI pipes, angle iron, wood or bamboo. It is covered with plastics net (Nets are made of PE/ PP thread with specialised UV treatment) having different shade percentages.
It provides partially controlled atmosphere and environment by reducing light intensity and effective heat during day time to crops grown under it. Shadenets are available in different shade percentages or shade factor i.e 15%, 35%, 40%, 50% 75% and 90% (for example 35% shade factor means – the net will cut 35% of light intensity and would allow only 65% of light intensity to pass through the net).
How Does Shade Net Work?
Each plant has its individual requirements for sunlight and shade under which it flourishes at its best. To create optimum climatic conditions, selection of the correct percentage of shade factor plays an important role to enhance plant’s productivity to its optimum.