The horticultural industry is facing increasing pressure, from rising energy costs, unpredictable weather conditions to stricter sustainability requirements. To help growers address these challenges, Van der Valk Horti Systems will showcase ValkPoly+ at Fruit Attraction. ValkPoly+ is an advanced screen system for poly greenhouses designed to improve climate control, increase light transmission and support higher crop yields. Visitors can experience a live demonstration at the Van der Valk Horti Systems stand and discover how the system can contribute to yield increases of up to 25%.
Fruit Attraction 2026: How ValkPoly+ improves climate control and crop yields in poly greenhouses
How screen systems improve climate control, energy efficiency and crop yields
In many regions, growers are facing increasingly unpredictable weather conditions. High solar radiation, extreme temperatures, cold nights, and sudden weather changes can place crops under stress and make climate control more challenging. According to Wageningen University & Research (WUR), movable screen systems help create a stable greenhouse climate and can significantly increase crop performance. With screen systems, growers can achieve up to 30% more PAR light levels, potentially resulting in crop yield increases of up to 25%.
The study also highlights that the heat-retention capabilities of screen systems help maintain higher nighttime temperatures. This reduces relative humidity inside the greenhouse and lowers the risk of fungal development. In other words, by retaining valuable heat during colder nights, screen systems can also contribute to improved energy efficiency and lower heating requirements. These warmer nighttime conditions may also allow growers to start the growing season earlier, creating additional opportunities to increase production.
Photo 1 Screen system ValkPoly+ installed in a greenhouse
Why ValkPoly+ is the best screen system for the poly greenhouse
ValkPoly+ is a screen system specifically developed for poly greenhouses. When developing the system, Van der Valk Horti Systems deliberately opted for a roll-formed screen profile instead of the standard 19mm tube profile. This unique profile shape distributes forces more efficiently and in the right direction. ValkPoly+ also enhances light transmission. Thanks to a more compact screen cloth package, ValkPoly+ allows more natural light to enter the greenhouse compared to other systems.
ValkPoly+ has also been specifically designed for the smaller compartments typical for poly greenhouses. By using a smaller drive shaft, the motor is subjected to less load, allowing multiple sections to be connected to a single motor. This results in a cost-efficient solution. Van der Valk Horti Systems is the only company offering this combination of a roll-formed profile, a smaller drive shaft, and a fully integrated system.
Experience ValkPoly+ live at Fruit Attraction
During Fruit Attraction, visitors can experience ValkPoly+ in action through a live demonstration at the Van der Valk Horti Systems stand (9A21). The demonstration offers a unique opportunity to see the system up close and discuss specific cultivation and climate challenges with our specialists.
Our team will be available throughout the event to explain how advanced screen systems can help create a more stable greenhouse climate, improve crop performance, and contribute to more sustainable greenhouse production.
Photo 2 Jari van Steekelenburg and Micha van Dasler, ValkPoly+ specialists
We look forward to welcoming you in Madrid. If you would like to meet with one of our specialists, we encourage you to schedule a meeting in advance: https://meetings.hubspot.com/jari-van-steekelenburg
Frequently asked questions about ValkPoly+
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ValkPoly+ is a screen system specifically for the poly greenhouses and is developed by Van der Valk Horti Systems.
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By improving climate control, light transmission and heat retention, ValkPoly+ helps create optimal growing conditions. With ValkPoly+, growers can achieve up to 30% more PAR light levels, potentially resulting in crop yield increases of up to 25%.
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ValkPoly+ is the only screen system on the market that combines a roll-formed profile, a smaller drive shaft, and a fully integrated system. By using a smaller drive shaft, the motor is subjected to less load, allowing multiple sections to be connected to a single motor. This results in a cost-efficient solution.
Thanks to a more compact screen cloth package, ValkPoly+ allows more natural light to pass through compared to other systems,” Rob adds to this. “This contributes to a better growing climate and improved crop performance.
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Pharis Rico, CEO of Plantanova, says: "I really can’t imagine a modern greenhouse without a reliable screen system in place. It’s essential for energy efficiency, temperature control and light distribution. Having quality products is crucial and ValkPoly+ has proven to be both reliable and easy to use, making it a valuable long-term investment rather than a cost."