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A Whole Season of Hybrid Tomato Cultivation Den Berk Delice & Bryte Confirm: “LED Ensures Controllability”
A stronger plant, higher fruit weight, and more uniformity in growth; these are the results of a lit tomato crop when combining Philips GreenPower LED toplighting compact and HPS lighting in a hybrid lighting solution
September 9, 2020
A stronger plant, higher fruit weight, and more uniformity in growth; these are the results of a lit tomato crop when combining Philips GreenPower LED toplighting compact and HPS lighting in a hybrid lighting solution. The growers, the world-renowned tomato cultivators Bryte from the Netherlands and Den Berk Délice from Belgium share their experiences with hybrid lighting during the first cultivation season in this article. Both projects were installed at the end of 2019
Both entrepreneurs were very positive about their experiences after a year of tomato cultivation with hybrid grow light. The combination, which resulted in a more uniform fruit and crop growth and a more controllable greenhouse climate, asks for more. Cultivation with hybrid lighting, in which LED lighting is combined with HPS lighting, however, requires a different approach than cultivation with only HPS lighting. “The big advantage of LED lighting is that there is much less radiant heat from the light, which gives us more control over the climate in the greenhouse. Since light and temperature can be controlled more independently from each other with hybrid lighting, we have to change the way we approach the climate differently and that requires a new way of thinking, where the experience of the Signify plant specialists comes in handy, ”says Zwinkels.
Heat differences in the greenhouse
Where heat is mostly the deciding factor with traditional HPS illumination - but also plays a major role as an unavoidable by-product for cultivation control - this is no longer the case with hybrid illumination. LED leads to much less excess heat in the greenhouse, which makes it possible to control light and temperature separately. It is thus easier to control the growing conditions. For example, Den Berk Délice chooses to grow generatively up to 28° C in winter and from March more vegetatively to keep a strong crop. Lucas: "We noticed that we are much more in control with LED." The cultivation experts at both companies carefully thought about how they could anticipate on the changing temperature situation in the greenhouse. Erik: "With us, the position of the growth tube could be at the expense of the fruit weight. In our case, the best solution was to introduce extra heat from the bottom of the greenhouse. We also noticed that control errors were less likely to be made due to better control over the climate and that the climate became more constant. We saw positive crop development and were satisfied with the fruit weight and the crop growth."
Illuminate longer
“A big advantage of hybrid cultivation in comparison with HPS is the possibility to light the crop for a longer period of time", said Koen. “Especially in the winter months, a high crop yield is important to us; it is a period that we want to make the most of. We have seen that with hybrid cultivation you can illuminate earlier in the fall, but also until deeper in the spring, up to thirteen or fourteen hours a day. Of course, you have to keep looking at what extra lighting brings in terms of production and costs.”
Light advice
The plant experts of Signify are experts in using LED and know better than anyone else what LED lighting means for crop growing and climate. In the past growing season, they assisted the companies with light and climate advice. Both companies now have 180 µmol/s/m2 light, distributed across 90 µmol/s/m2 LED toplighting compact and 90 µmol/s/m2 HPS lighting. The Philips GreenPower LED toplighting compact was introduced to the market during the last growing season. "Signify talks a clear language", said Erik. "They are the right discussion partner for me, who regularly visits and discusses what we encounter in practice." Koen adds: “The specialists also have a large network. Via them, I managed to get into contact with other growers who also use LED. I look forward to the annual Tomato Community Event organized by Signify, where cultivators from around the world get together. This not only gives me the opportunity to share experiences with LED lighting, but also to expand my network that I can take advantage of in the future. We always see talking to like-minded people as very valuable.”
Does LED toplighting have a future?
Firstly, LED saves up to 60% on energy costs, but there is more. Erik: "As cultivator, I would like to bring the winter to the summer. LED lighting makes it possible to go to higher light levels and is the right way to do that. I prefer a hybrid solution with HPS, and then look at how we can regulate the heat in the greenhouse.” For Koen, the ideal cleaning conditions, where the modules do not have to be shielded, and the simple scaling options are reasons to choose a combination of HPS with LED toplighting compact luminaires. He refers to the plug-and-play ease of installation of the Philips GreenPower LED toplighting. Both consider future investments in a larger portion of LED in their greenhouses. They look forward to the development of LED in combination with higher light levels.
Create the correct balance to control your crops
Erik wondered if he, at his company, as he said, maybe loved the plants too much. In passing, he refers to the learning curve that you as a grower with LED go through. "You control it differently with hybrid lighting and that requires experience that you will gain through the years. You become wiser. Light and heat become more tangible and you are better able to control the right balance in your crop. I see it as an added value in which we can develop ourselves year after year, with better end results. Let the summer come during the winter!"
Erik and Mark Zwinkels are co-owners of Bryte; with 40 hectare - of which 60% is lit - one of the biggest players in the Dutch tomato cultivation. Koen Lauwerysen is one of the four business managers at Den Berk Délice, where Lucas Aertsen is the cultivation manager. With 60 hectares tomatoes - of which half is lit - their company is also one of the bigger ones in Belgium. Both share their experiences during the past cultivation season where they used the combination LED and HPS for the first time. Bryte installed it on eight hectares, and Den Berk Délice on ten.
For further information, please contact:
Global Marcom Manager Horticulture at Signify
Daniela Damoiseaux
Tel: +31 6 31 65 29 69
E-mail: daniela.damoiseaux@signify.com
Signify Global Media relations - Professional Lighting
Wendy Schellens
Tel: +31 6 51 863 401
Email: wendy.schellens@signify.com
About Signify
Signify (Euronext: LIGHT) is the world leader in lighting for professionals and consumers and lighting for the Internet of Things. Our Philips products, Interact connected lighting systems and data-enabled services, deliver business value, and transform life in homes, buildings, and public spaces. With 2019 sales of EUR 6.2 billion, we have approximately 36,000 employees and are present in over 70 countries. We unlock the extraordinary potential of light for brighter lives and a better world. We have been named Industry Leader in the Dow Jones Sustainability Index for three years in a row. News from Signify is located at the Newsroom, Twitter, LinkedIn, and Instagram. Information for investors can be found on the Investor Relations page.
Is Hydroponic Farming Actually Sustainable?
If you've ever wondered how sustainable hydroponic farming really is—or what exactly is involved in vertical farming—this article is for you.
September 4, 2020
According to the UN, the world is on the brink of its worst food crisis in 50 years.
The global food industry is searching for a more sustainable and accessible system for producing healthy food, particularly fresh fruit and vegetables. Techniques such as hydroponics and vertical farming may provide the solution by maximizing overall output and minimizing the use of space, soil, and other resources.
But what exactly is hydroponic farming? And is it actually sustainable?
Gotham Greens grows fresh produce such as leafy greens in urban greenhouses. | Image/Gotham Greens
What Is Hydroponic Farming?
There are a variety of different approaches to Hydroponic Farming. But they all involve growing plants and fresh produce minus the soil.
There are several main styles of hydroponic systems. One uses an absorbent wick to transfer nutrients from a water reservoir up to the roots of the crop. While others leave an air-gap, allowing part of the root system to absorb nutrients directly while the remainder is exposed to oxygen in the air.
Plants may also be positioned on a floating raft, or grown through a medium, into which water is regularly pumped. Top feeding also requires regular water circulation, while aeroponics involves leaving the roots completely exposed but frequently filling or misting the space with nutrient-enriched water.
Whatever the precise method used, hydroponics involves regular exposure to both air and nutrient-rich water. According to Vertical Roots, a South Carolina-based Indoor Hydroponic Container Farm, there are five core elements to hydroponic farming. These are freshwater, oxygen, root support, nutrients, and light.
By growing crops in water, vertically, and in climate-controlled greenhouses, Vertical Roots and other similar farms are able to produce nutrient-dense food anywhere in the world, at any time of year, and using fewer resources than traditional methods.
Hydroponic farming is more resource-efficient than traditional methods. | Image/Shawn Ang via Unsplash
Is Hydroponic Farming Sustainable?
Soil-less farming techniques, in general, are typically more resource-efficient long term than traditional methods. According to the National Parks Service (NPS), hydroponics can use up to 10 percent less water than field crop watering.
By operating a closed-loop system and recycling rainwater, high-tech greenhouse developer AppHarvest uses up to 90 percent less water than traditional methods.
Most hydroponic farms utilize closed-loop systems, like AppHarvest, that contain and preserve water. This control over the water system also allows for delicate adjustments to the environment. PH levels, amount and type of light, and quantity of nutrients can all be modified to enhance the growth of crops.
Emphasizing perennial agriculture—particularly in combination with vertical farming and hydroponics—can further maximize both production and nutritional content per-plant. Many perennials, which can be maintained all year round with no replanting, are extremely nutrient-dense.
Start-up costs for hydroponic systems are typically greater than for traditional farming. But overall, it produces far greater output with fewer resources. It also allows growers to produce food anywhere in the world. Thereby reducing the carbon emissions generated through transportation, and allowing for year-round production in even inhospitable environments or weather conditions.
In general, hydroponic systems can produce a greater yield of fruits and vegetables. This is in part due to the controlled environment, but also because plants can be housed much more densely than possible using traditional methods. This both increases the overall output and reduces the quantity of land required.
Vertical farming can decrease the amount of land used for fresh produce even further. | Image/Markus Spiske via Unsplash
What Is Vertical Farming?
Vertical farming involves the growing of vegetables in stacked layers, frequently in a controlled environment.
Vertical farming also requires much less land than traditional methods. Typically, it incorporates controlled-environment systems such as hydroponics to maximize output. The primary goal of vertical farming is to increase the crop yield while reducing the space required, much like hydroponics itself.
Vertical farming firm Infarm recently partnered with supermarket chain Marks & Spencer to grow fresh herbs in select stores. The company is also working with several retailers and chefs across Europe who aim to add small vertical farms to their restaurants and stores.
“Our vertical farms can be installed directly in any urban space,” said Emmanuel Evita, global communications director at Infarm. “Which is where the majority of the global population will live in the next few decades.”
It is particularly useful for growing produce in areas where there is a lack of arable land. In Abu Dhabi, where there are extremely high temperatures and increasing water scarcity, the government is investing $100 million in indoor farming.
Inner-city gardening, in general, also lends itself to vertical farming. While harder to create a controlled environment, guerilla gardening and other community-based projects have also made use of the vertical system. This enables greater access to fresh produce and reduced mileage overall, even with rudimentary systems in place.
Emphasizing perennial vegetables could also maximize nutrients, increase production, and reduce the consumption of resources.
Why Do We Need Alternative Farming Methods?
Studies indicate that the suburbanization of major supermarkets has led to food deserts within cities. This disproportionately impacts low-income people and those who live in urban areas. Traditional malnutrition affects around two billion people worldwide. But the Standard American Diet (SAD) and lack of access to fresh food is also responsible for chronic deficiencies.
Access to fresh fruit and vegetables is likely to become even more restrictive in the recession following the COVID-19 coronavirus pandemic. And even in countries with plenty of food, there will likely be further disruptions in the food supply chain.
In order to provide enough vegetables for the global population to maintain a healthy diet, food production would need to triple. Alternative methods such as vertical farming and hydroponics could provide a resource-efficient and accessible way of revolutionizing the global food industry.
Gotham Greens, a fresh food farming company, specifically choose to build sustainable greenhouses within cities. Local cultivation helps the company deliver products quickly and with minimal energy expenditure. This also allows those who live within urban areas access to fresh, nutrient-dense food, and to agricultural jobs.
AppHarvest is also creating jobs, minimizing its carbon footprint, and increasing its output with its choice of location. By opening a new facility in Morehead, Kentucky, the company is both tackling high local unemployment rates while placing itself less than one day’s drive from 70 percent of the U.S. population. This reduction in travel for delivery has dropped its overall diesel costs by 80 percent.
“It’s time for agriculture in America to change,” said Johnathan Webb, the founder, and CEO of AppHarvest. “The pandemic has demonstrated the need to establish more resilient food systems, and our work is on the forefront of that effort.”
STAFF WRITER | BRISTOL, UNITED KINGDOM | CONTACTABLE VIA: LIAM@LIVEKINDLY.COM
Liam writes about environmental and social sustainability, and the protection of animals. He has a BA Hons in English Literature and Film and also writes for Sustainable Business Magazine. Liam is interested in intersectional politics and DIY music.
Lead photo: How sustainable is hydroponic farming? | Image/Gotham Greens
Controlled Environment Agriculture Open Data (CEAOD) Project
The use of Machine Learning and Artificial Intelligence techniques could provide CEA researchers and commercial growers an opportunity to optimize crop production efficiency and unveil new methods to improve production yield
Date: August 4, 2020
Time: 2 p.m. - 3 p.m. EDT
Presented by: Erico Mattos, GLASE Director, and Kenneth Tran, Koidra
Click Here to Register
Controlled Environment Agriculture (CEA) is a data-driven scientific discipline. In CEA operations all the environmental parameters are monitored and controlled to provide optimal conditions for crop growth. Recent technological advancements made the use of sensors and controls more accessible to CEA growers allowing them to precisely adjust these parameters.
The use of Machine Learning and Artificial Intelligence techniques could provide CEA researchers and commercial growers an opportunity to optimize crop production efficiency and unveil new methods to improve production yield. However, there is a lack of a centralized repository and a standard methodology for data sharing.
Join GLASE Director Erico Mattos and Koidra CEO Kenneth Tran on this GLASE Webinar to learn about the Controlled Environment Agriculture Open Data (CEAOD) project. This initiative aims to promote data sharing to accelerate Controlled Environment Agriculture (CEA) research through the establishment of a free centralized platform for the CEA community. Researchers and commercial growers are welcome to join and learn more about it.
Kenneth Tran was part of the winning team at the first International Autonomous Greenhouse Challenge held at Wageningen University in 2018. The team defeated four other international teams, consisting of experts in the field of Artificial Intelligence (AI) and horticulture. Erico Mattos is working with Cornell University and Rensselaer Polytechnic Institute Researchers to develop a guideline for data collection and upload to the CEAOD project.