Green House Cultivation
Importance of green house
In conventional cultivation, the crops
are being grown in the open field under natural conditions.
Here the crops are susceptible to sudden changes in climate and
their yield is also affected.
cultivation is a cropping technique wherein the micro climate
surrounding the plant body is controlled partially/ fully as per the
requirement of the plant species. As a result the yield is enhanced
Principle of green house
The green house is
generally covered by transparent or translucent material such as glass or
plastic. The green house covered with simple plastic sheet is termed as poly
house. The green house generally reflects back 43% of the net solar
radiation incident upon it. At the same time it allow the transmittance of
the "photo synthetically active solar radiation" in the range of 400-700 Nm
Use of green house
- Production of vegetable crops.
- Production of off-season flowers,
- Production of Roses, Carnation,
- Plant propagation, raising of
- Primary and secondary hardening
nursery of Tissue cultured plant.
- Growth / Production of rare plants,
orchids / herbs, medicinal plants.
Components of a green house
- Green House G.I. structure.
- Covering material-UV stabilized
Polyethylene / Polycarbonate / Acrylic.
- Root Ventilation & Side wall roll up
- Cooling pad and Fan System.
- Shading / Thermal net Manually /
- Micro Irrigation System.
- Fertigation System
- Misting System.
- Heating System.
- CO2 Generator.
- Control System - Manual / Semi
Automatic / Automatic. Fully Computerized / Weather Station.
- Planting material, soil media.
Benefits of green house
- Environment control allows raising
plants anywhere in the world at any time of the year i.e. crops could be
grown under the inclement climatic conditions when it would not be
otherwise possible to grow crops under the open field conditions.
- The crop yields are at the maximum
level per unit area, per unit volume and per unit input basis.
- The control of the microcosm allows
the production of higher quality products which are free from insect
attack, pathogens and chemical residue.
- High value and high quality crops
could be grown for export markets.
- Income from the small and the marginal
land holdings maintained by the farmer can be increased by producing
crops meant for the export markets.
- It can be used to generate self
employment for the educated rural youth in the farm sector.