Since the fall of 2024, a unique practical trial with ErfGoed’s AirFlow system has been underway in the Broeikas of Division Q / Koppert Cress in Monster. This innovative system directs air into the greenhouse through the cultivation floor. Following earlier small-scale trials, the system is now being tested on a practical scale to assess its impact on crop development, energy savings, and climate control. In collaboration with Delphy Improvement Centre and De Rijke Techniek, objective measurements are being conducted to evaluate the added value of this system. The initial results are promising.
Three sections, different conditions
The trial setup in the approximately 1,000 m² Broeikas is divided into three sections: one reference section without AirFlow and two sections where air is circulated through the floor. The expected benefits of the AirFlow system include a more uniform climate around the crops and more efficient energy use. By dividing the trial into three sections, the effects of the system can be accurately compared.
Initial observations and challenges
The trial has already revealed some interesting developments. In the sections equipped with the AirFlow system, the crops appear more compact. Extensive measurements are being conducted, including assessments of the (micro)climate, pot weight, and plant weight. The goal is to determine whether the AirFlow sections truly offer a higher yield.
There are also challenges. In the coming period, tests will be conducted to determine whether absolute humidity (AH) can be effectively controlled. The aim is to gain a clear understanding of how humidity levels can be managed, particularly during the critical period from October to March. Thanks to the collaboration with the aforementioned partners, these measurements are carried out and analyzed objectively.
What do ErfGoed and Koppert Cress expect?
Expectations for the AirFlow system are high. Previous tests at ErfGoed in Moerkapelle demonstrated that the system not only improves the greenhouse climate but also enhances the utilization of low-grade heat and offers potential energy savings of up to 20%. Additionally, improved product quality—possibly in combination with resilient cultivation techniques—is an important anticipated benefit. Through this current trial, ErfGoed and Koppert Cress aim to confirm and expand upon these findings.
With this practical trial, ErfGoed is taking a significant step in advancing innovative cultivation systems. The results will not only provide insights into the effectiveness of AirFlow but may also contribute to more sustainable and efficient growing methods for the future.
