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Different growing structures for protected horticulture (glasshouse, naturally ventilated greenhouse, hi-tech and semi hi-tech structures, polyhouses, heating tunnel, screen house, rain shelters)
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Historical perspective and status of protected horticulture in Nepal and around the world
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Automation of irrigation and nutrient management
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Master Protected and Precision Horticulture – Notes, Case Studies and Practical Insights – with Rahul

Advantages of Hydroponics

a. Efficient Use of Resources

  • Water saving: Uses up to 80-90 percent less water compared to soil-based farming due to recycling of nutrient solution.
  • Nutrient efficiency: Fertilizers are supplied in dissolved form, minimizing wastage and leaching.
  • Enables precise control of pH and electrical conductivity (EC) for optimum plant growth.

 

b. Higher Yield and Productivity

  • Plants receive balanced nutrition directly to roots, leading to faster growth and early maturity.
  • Yields are 2-3 times higher than conventional soil farming under controlled conditions.
  • Allows year-round cultivation independent of seasons.

 

c. Better Quality Produce

  • Uniform supply of nutrients results in consistent size, shape, and taste of fruits and vegetables.
  • Free from soil-borne diseases and contamination, producing clean and safe food.
  • Higher market value due to premium quality and pesticide-free production.

 

d. Overcoming Soil Limitations

  • Suitable for regions with infertile, saline, sandy, rocky, or contaminated soils.
  • Eliminates problems of soil-borne pests, nematodes, weeds, and pathogens.
  • Can be practiced in places where arable land is limited, such as urban areas, deserts, or space missions.

 

e. Space and Location Flexibility

  • Can be established in rooftops, balconies, greenhouses, and vertical farms.
  • Ideal for urban and peri-urban farming where land is scarce.
  • Adaptable for indoor farming with artificial lighting.

 

f. Environmental Benefits

  • Reduced pesticide and herbicide usage due to absence of soil-related problems.
  • Less nutrient runoff, minimizing pollution of nearby water bodies.
  • Supports sustainable agriculture through resource-efficient production.

 

g. Ease of Crop Management

  • Automated systems for irrigation, fertigation, and climate control reduce labor needs.
  • Easier monitoring of plant health due to visible root systems.
  • Allows precision farming through sensors, IoT, and data-driven control.
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