In the tropical climate of Thailand, where temperatures regularly soar above 36°C, the art of greenhouse tomato cultivation demands innovative strategies. Take Me Home Tomato, a pioneering company in this field, has emerged as a leader by embracing a combination of advanced techniques and adaptive practices. Their journey involves a meticulous approach to environmental control, crop management, and data-driven decision-making, all aimed at maintaining consistent production despite the challenging climate.
One of the key challenges they face is the recovery phase of grafting, where plants are vulnerable to extreme temperatures and humidity. Menno Keppel, CEO and Founder of Take Me Home Tomato, explains that the process involves a delicate balance. The grafting itself occurs in a controlled room, but the recovery phase takes place in humidity tents, where temperatures can soar to over 40°C. The critical aspect is knowing when to open the tents to introduce fresh air while maintaining sufficient humidity for successful plant healing.
Initially, these conditions led to significant plant losses during the grafting process. However, through refining nursery protocols, Take Me Home Tomato has achieved remarkable consistency. Keppel highlights that the grafting process itself is relatively straightforward if executed with precision, but the real challenge lies in keeping the plants alive during the initial week following grafting.
A significant breakthrough came with the introduction of supplemental LED lighting in the greenhouse nursery. Seasonal variations in natural light previously caused uneven plant growth, making it difficult to match rootstocks and scions throughout the year. By adding Philips LED lighting, even at low levels, the company witnessed a transformative effect. Plants grew faster during warmer periods, and winter produced healthier, more robust plants. This innovation resulted in a 95% success rate in grafting, showcasing the power of technology in overcoming natural limitations.
Take Me Home Tomato also made a strategic shift in substrate choice, moving from coco substrates to Grodan stone wool. This decision was driven by the belief that Grodan offers superior dry-back management and more consistent nutrient availability when plants need it the most. While coco substrates may appear cost-effective, the company found that Grodan delivers better overall results, enabling earlier harvests and maintaining improved fruit quality. The use of GroSense further enhances their data collection capabilities, enabling more precise crop steering and plant manipulation.
Adapting greenhouses for Thailand's six-month rainy season is another critical aspect of their strategy. The OptiClima greenhouses employ external shading to reduce solar radiation without hindering natural ventilation. This design allows for the utilization of maximum available light during the morning and afternoon while deploying outside screens when greenhouse temperatures exceed 29°C. This innovative approach reduces greenhouse temperatures by 5 to 9°C without the need for active cooling, ensuring plant health and productivity.
For nursery production, Take Me Home Tomato recommends additional shading and high humidity during graft healing. Products like ReduSol or ReduHeat, along with internal nursery shading and extra shade cloth above healing tents, contribute to creating an optimal environment. Increasing humidity through methods like wetting the floor or fogging further supports the healing process.
Looking ahead, precision growing is becoming increasingly vital in Southeast Asia. Growers are transitioning from tunnel systems with pad-and-fan cooling to naturally ventilated greenhouses better suited to tropical conditions. The adoption of external shading and reflective coatings is on the rise, as reducing peak light intensity significantly lowers plant stress. Additionally, there is a growing recognition of the importance of high-quality propagation material, as better young plants directly translate to improved crop performance.
Menno Keppel believes that precision irrigation and improved access to technical knowledge will have the most significant impact on productivity. Collecting data is the cornerstone of this approach, enabling growers to understand the inner workings of the greenhouse. Combined with know-how, precision irrigation empowers growers to provide the exact nutrients the crop needs, moving away from guesswork. This data-driven approach is revolutionizing the industry, ensuring that tomato cultivation in tropical climates becomes more efficient and sustainable.
In conclusion, Take Me Home Tomato's success in Thailand's challenging climate underscores the importance of adaptability and innovation in greenhouse tomato production. By embracing advanced techniques and a data-centric approach, they have achieved remarkable consistency and productivity. As the industry continues to evolve, their strategies serve as a blueprint for others seeking to thrive in tropical environments, offering a glimpse into the future of sustainable and efficient tomato cultivation.
