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Protected Cultivation

Protected cultivation is the technique of providing favorable environmental or growth conditions to the plants. Protective cultivation practices can be defined as cropping techniques wherein the micro-climate surrounding the plant body is controlled partially/fully, as per the requirement of the plant.

The various types of protective cultivation practices have been adopting based upon the prevailing climatic condition. Among them, greenhouse/poly house is extremely useful for Round-the-year vegetable cultivation in temperate condition. Protected cultivation also known as controlled environment agriculture (CEA) is highly productive, conservative of water and land and also protective of the environment.

Advance Agriculture with VR International

Being the part of Advance Agriculture with integration of experienced partners we build naturally ventilated playhouses, Net house, Fanpad systems  etc.  Importance of protected cultivation can not be ignored.  We offer customized greenhouse construction to suit specific purposes. We can design and construct greenhouses for research purposes as well as for large scale commercial farming such as Poly house with Fan & Pad system, Naturally Ventilated Poly house, Shade Net house and Walk in tunnels

Benefits of Protected Cultivation

  • Provides favourable micro climatic conditions for the plants

  • Cultivation in all seasons is possible.

  • Higher yield with better quality per unit area.

  • Conserves moisture thus needs less irrigation.

  • More suitable for cultivating high value / off season crops.

  • Helps to control pest and diseases.

  • Helps in hardening of tissue cultured plants.

  • Helps in raising early nurseries.

  • Round the year propagation of planting material is possible.

  • Protects the crops from wind, rain, snow, Birds, hail etc.

  • There is efficient and less use of resources especially land, irrigation water, fertilizers, and insecticides.

  • Vegetables with higher productivity and uniform quality than open field cultivation are produced and can be exported to WTO markets for higher returns.

  • Organic farming of vegetables is easier in greenhouses and these structures are ideally suited for production of genetically engineered and micro-propagated vegetable varieties and hybrids.

  • Early nursery raising, easy management, protection from biotic and a biotic stresses and production of healthy vegetable seedlings.

  • Vegetable crops can be grown under adverse weather conditions round the year and in the off-season.

 

Types of Protected cultivation Fabricated and installed by  VR International

Net House 

Net house is made up with shade Net or Insect net mounted on support structure.In Net house normally environment is controlled naturally.  Client may use shed net or insect net as per local requirement. Shade nets are used to cut down the solar radiations and protect the crops from wilting/scorching. These are available in three colours, i.e. black, green and white and in different shading intensities ranging from 25 to 75%. Insect proof nets are available in different intensities from 25 to 60 mesh. Nets of 40 and higher mesh are effective means of controlling most of the flying insects. 


Walk-in-tunnels

These are simple structures which are generally arc shaped of about 2 to 2.5 m height at the center and a width of about 4m. These accommodate almost 2 to 3 beds of vegetables and are suitable for crops of low canopy like capsicum, lettuce, bush type beans etc. they are suitable
for nursery raising. 


Greenhouses

A greenhouse is a framed or an inflated structure covered with a transparent or a translucent material in which crops could be grown under the conditions of at least partially controlled environment and which is large enough to permit persons to work within it to carry out cultural operations.  It is a technique of providing favorable environmental or growth conditions to the plants. In greenhouses, the growing environment is altered to suit the specific requirements of the plants. Of all the structures greenhouse is the basic and important structure for harnessing the full potential of this technology. Greenhouse technology is the most effective way to achieve the goal of protected cultivation since it provides favorable and controlled environment for the crop to grow and give high productivity round the year. 


Naturally ventilated greenhouse

Naturally Ventilated Greenhouse  is cost effective version of Greenhouse.  They having vents at Top and at Sides. By which they exchanges air arising from the density difference of hot and cold air.  Air exchange rates are very low and much dependent on the temperature difference between internal and ambient air. These greenhouses mainly rely on the wind pressure generated from one side and released from another side. In Naturally Ventilated Greenhouse


Fan pad greenhouse

Fan pad greenhouse is used to provide a controlled growing environment for growing special crops and plants. This greenhouse is provided with special-purpose fans to draw air into the greenhouse through high-efficiency cooling pads made from high surface area ribbons of cellulose fiber. Humidity is controlled by an elaborate system of foggers.   Fertigation is implemented by an efficient drip-irrigation system.

Typically, exotic plants and crops meant for the export market or as import-substitutes are grown in such greenhouses. The temperature and humidity can be controlled to provide the exact growing environment required for plants that grow in temperate regions.         

Plants that are commonly grown in these greenhouses are carnation, Gerbera, rose, and colored capsicum, cucumber, cherry tomato and so on.           

This type of greenhouse is ideal for growing nursery plants. Plants grown for nursery propagation have to be provided with a very specific environment. Nursery plants are very valuable and need extreme care during the early stages of their development.