The world of greenhouse propagation is undergoing a quiet revolution, driven by a combination of labor shortages, rising costs, and a relentless pursuit of uniformity. At the heart of this transformation is a technology that might seem deceptively simple: the Air-tray®. But what makes this innovation so powerful is not just its technical specifications, but the way it challenges long-held assumptions about propagation and automation.
A Journey from Skepticism to Enthusiasm
Rob Tolenaars, the visionary behind Tolenaars Tree and Plant Services (TTS), has been a pioneer in transplant automation for over two decades. His journey began in Australia, where he developed his first automatic transplanter, only to return to Europe in 2008, only to find that the market wasn't quite ready for such innovation. "Labor was available, and transplanting was still done manually," he recalls. Fast forward to the present, and the situation has flipped. Growers who once doubted the necessity of automation are now clamoring for it, driven by the realization that labor shortages and rising costs are unsustainable in the long term.
The Power of Standardization
One of the key challenges in automation, according to Tolenaars, is the lack of standardization in propagation trays. The market is filled with trays of varying sizes and cell counts, making automation a complex and often unreliable endeavor. To address this, TTS designed the Air-tray® system around a standard 600 x 400 mm tray with even cell counts. This standardization not only simplifies automation but also maximizes space efficiency in greenhouses, fitting neatly onto Euro pallets. In a world where every square meter is precious, this standardization can significantly boost the number of plants produced per square meter while maintaining uniformity.
Engineering Roots for Success
The innovation doesn't stop at standardization. The heart of the Air-tray® lies in its design, specifically tailored to enhance root development. Large drainage openings promote hygiene, while an internal water reservoir keeps moisture close to the plug, ensuring optimal hydration. The cell design, meanwhile, encourages roots to grow downward and undergo air pruning, preventing the detrimental root circling that can stunt growth. This patented design, according to Tolenaars, leads to stronger, more uniform root systems, which in turn result in faster plant establishment and reduced transplant shock.
The Proof is in the Plants
TTS has put its Air-trays® to the test, comparing them with conventional systems under commercial growing conditions. The results are striking. Plants grown in Air-trays® exhibit more uniform growth, with consistent stems and notably stronger root systems. This improved root development, Tolenaars explains, leads to faster establishment in the soil, with plants becoming firm and continuing to develop without the setbacks often associated with transplanting.
Beyond the Machines
TTS offers more than just the machinery. They also provide tray filling and precision sowing services, allowing growers to adopt the Air-tray® system without the immediate need for full automation. This approach makes the transition to automated propagation more accessible and cost-effective, providing a pathway for growers to gradually integrate the technology into their operations.
A Future of Automation and Efficiency
As the world of greenhouse propagation continues to evolve, the Air-tray® system represents a significant leap forward in efficiency and uniformity. By combining standardization, innovative root development, and a comprehensive service offering, TTS is helping growers meet the challenges of the modern market. The future, it seems, is not just about automation, but about a holistic approach to propagation that maximizes both productivity and plant health.
