Polyhouse Farming in India – Learn about Polyhouse Types


Navigating the intricacies of greenhouse farming often feels like a puzzle for many farmers, with questions lingering about costs, types, vendors, and operational nuances. In an effort to demystify the complexities, this comprehensive guide seeks to shed light on the various greenhouse options available, addressing common misconceptions and offering a well-rounded understanding of greenhouse construction.

What is the greenhouse effect and what does it have to do with the greenhouse I want to build?

Greenhouse effect by definition is the ‘trapping of the sun’s warmth in a planet’s lower atmosphere’. Greenhouse effect is responsible for keeping the earth warm and allowing life to flourish on its surface. The greenhouse a farmer builds allows trapping of heat and carbon dioxide allowing it to be abundantly available to plants when they need it the most. Hence, a greenhouse works wonders in temperate areas (extremely cold areas) whereas in tropical areas we need ventilation to ensure the Temperature and humidity inside the greenhouse is favorable to the plants.

Balancing Temperature and Humidity:

Understanding that the relationship between temperature and humidity is pivotal, growers must consider these factors as a cohesive unit. Striking the right balance is crucial for cultivating crops successfully within a greenhouse.

Understanding Vapour Pressure Deficit (VPD) and its Impact on Plants:

Vapour Pressure Deficit (VPD) is a critical metric in greenhouse cultivation, reflecting the difference between the actual moisture content in the air and the maximum moisture the air could hold at a specific temperature. This measurement is integral because it directly influences plant transpiration, nutrient uptake, and overall growth.

  • Influence on Transpiration:
    • VPD affects the rate at which plants release water vapor through small pores in their leaves, known as stomata. A balanced VPD ensures optimal transpiration, allowing plants to regulate internal water pressure and absorb nutrients efficiently.
  • Nutrient Absorption:
    • The right VPD level is essential for nutrient absorption. An appropriate VPD encourages a healthy balance between water loss and nutrient uptake, fostering robust plant development.
  • Growth and Yield:
    • Maintaining an optimal VPD is crucial for overall plant health, influencing factors such as photosynthesis, stomatal conductance, and ultimately, crop yield. Deviations from the ideal VPD range can impact the plant’s physiological processes.

Understanding VPD provides growers with insights into creating an environment that supports the specific needs of their crops. Greenhouse selection plays a role in managing VPD, allowing farmers to control temperature and humidity to provide an environment conducive to optimal plant growth.  Learn about Psychrometer and how it can be used to measure humidity, temperature and hence VPD

Choosing a Trustworthy Vendor:

Selecting a reliable vendor is a pivotal decision. Unfortunately, not every self-proclaimed expert possesses the necessary skills. Thus, demanding proof of claims and holding vendors accountable post-construction are indispensable steps. Avoiding a ‘Build and Leave’ relationship is paramount, as a poorly constructed greenhouse can compromise crop success.

The Role of Greenhouses in Hydroponics Farming:

For hydroponics farming, a greenhouse serves as a protective shield against external elements, creating a controlled environment for consistent crop quality and quantity. The greenhouse becomes an indispensable asset for maintaining the desired atmospheric conditions.

Investment Considerations:

While cost is a significant consideration, compromising on essential technologies can lead to project failure. Growers are encouraged to negotiate on price but prioritize crucial technologies to ensure the success and sustainability of their projects.

Addressing Specific Queries:

For personalized assistance and deeper insights into specific greenhouse types, including Shade Net Houses, feel free to reach out to us at [email protected]. We are committed to providing answers and tailored guidance to meet your unique needs.


Demystifying the world of greenhouses requires careful consideration of climate, technology, and vendor reliability. Armed with accurate information, farmers can confidently navigate the diverse landscape of greenhouse options, whether opting for a naturally ventilated polyhouse, a forced ventilated greenhouse, or the cost-effective simplicity of a Shade Nethouse. Understanding VPD plays a crucial role in creating an environment that maximizes plant health and productivity.