The greenhouse plastics stand out as the most common and versatile solution for protecting crops from inclement weather and other external agents. But what specific characteristics should be taken into account when selecting the most suitable plastic? Here are the keys.
Thermicity and light transmission
One of the fundamental aspects of greenhouse plastic is its ability to regulate heat exchange and light transmission.
A good material should allow high transmission of solar radiation, which is essential for the photosynthesis process of plants, while minimizing heat loss through infrared radiation. This optimizes the internal environment of the greenhouse and promotes healthy crop growth.
Durability and physical resistance
The duration of the plastic is another determining factor. Generally, these materials have a useful life that varies between 3 and 5 years, depending on the type of polymer and the additives used during manufacture. It is important that the plastic is physically resistant to withstand adverse weather conditions such as strong winds, hail and sudden changes in temperature without compromising its structural integrity.
In addition, the resistance to UV rays is also a considerable quality to prolong the life of the plastic. Plastics treated with UV stabilizers do not degrade easily when exposed to intense sunlight, and maintain their protective effectiveness for longer.
The ability of the plastic to resist mechanical wear, which may include tension caused by installation and stretching, as well as impacts from objects such as branches or agricultural tools, should also be assessed.
Anti-drip properties and maintenance
Plastics with anti-drip properties are the most recommended to reduce the risk of water droplets falling on plants. These materials incorporate additives that modify the nature of the plastic surface, preventing excessive condensation and maintaining an optimal environment inside the greenhouse.
The maintenance of these plastics is relatively simple, as the surface treated with anti-drip additives also tends to repel dust and other contaminants, thus offering greater transparency and efficiency in light transmission.
However, it is important to carry out regular inspections to ensure that the anti-drip property is still effective, as well as cleaning the plastic when necessary to prolong its useful life and maintain optimal conditions for cultivation.
Thickness and types of plastic
Thicknesses ranging from 600 to 800 gauge are recommended for covers. In this way, the necessary resistance is obtained without compromising light transmission. In addition, there are several types of plastics available on the market, such as polyethylene (PE) and ethylene vinyl acetate (EVA), each with its own specific characteristics that adapt to different needs and climatic conditions.
When choosing plastic for a greenhouse, it is essential to consider local climatic conditions, the specific needs of the crops and the available budget. Opting for a material that adequately combines thermicity, durability, physical resistance and anti-drip properties will guarantee an ideal environment for plant growth, thus increasing crop productivity and quality.
In short, selecting the right greenhouse plastic makes a difference in the success of your agricultural production under cover. With the appropriate assessments and expert guidance, an optimal environment for the plants is guaranteed, ensuring their healthy development and effectively protecting them from adverse climatic conditions.
