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Apr 16, 2018 6:13 AM CST
|what is Greenhouse?
A Greenhouse is a framed structure covered with transparent material and large enough to grow crops under partial or fully controlled environmental conditions to get optimum growth and productivity.
Greenhouse Technology is the technique of providing favorable environment condition to the plants
Of all agricultural production activities, the greenhouse industry is worldwide the fastest growing sector. The greenhouse is goldmines that offer the most profitable business opportunities.
The use of the greenhouse is mainly for the production of seasonal and non- seasonal crops, for the production of high-quality flower and the preparation of nursery prepared by tissue culture.
Greenhouses offer many advantages
Advantages of Greenhouse:
The yield may be 10-12 times higher than that of outdoor cultivation depending upon the type of greenhouse, type of crop, environmental control facilities.
Reliability of crop increases under greenhouse cultivation.
Ideally suited for vegetables and flower crops.
Year round production of floricultural crops.
Off-season production of vegetable and fruit crops.
Disease-free and genetically superior transplants can be produced continuously.
Efficient utilization of chemicals, pesticides to control pest and diseases.
Water requirement of crops very limited and easy to control
Types of Greenhouse:
There are different types of greenhouses based on shape, construction, material, and ventilation. Each greenhouse has own advantage. Different types of a greenhouse are designed to match the specific needs.
Greenhouse type based on Shape
Sawtooth type Greenhouse
Ridge and furrow type greenhouse
Uneven span type greenhouse
Even span type greenhouse.
Interlocking ridges greenhouse.
Ground to ground greenhouse
Greenhouse type based on construction
Wooden framed structures
Pipe framed structures
Greenhouse type based on covering materials
Greenhouse type based on ventilation
Natural Vent Greenhouse –
This type of greenhouse is based on natural ventilation and depending on the crops the temperature, humidity, and carbon dioxide gas can be maintained as per the requirement.
In this Greenhouse, plastic nets are used to prevent insect and bacterial access.
This type greenhouse used for the production of cut flower like Gerbera, Dutch rose, carnation, lily & vegetable like color capsicum, tomato, cucumber, exotic vegetables.
2) Climate control Greenhouse: –
In such a greenhouse, temperature and humidity are controlled by using micro-irrigation techniques. The in this type greenhouse internal environment is fully controlled. This type of greenhouse mostly uses for Hi-tech Nursery.
Point to consider before Selecting Greenhouse site
Soil PH Should be between 5.5 to 6.5 and EC (Volatility) 0.3 to 0.5 mm cm/cm
Good water quality is continuously available.
The irrigation water samples should be range from PH 5.5 to 7.0 and E.C. 0.1 to 0.3
The selected place should be pollution-free.
There should be roads for transportation and shipping of goods in the market.
The place should be large enough for the upcoming expansion.
Workers should be available easily and cheap.
There should be excellent communication facilities in place.
The drainage of the soil should be very good
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