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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
The World's Largest Indoor Farm Is Creating 300 Jobs In Kentucky
The 2.76-million square foot controlled environment agriculture facility is based in Morehead, Eastern Kentucky. A region where unemployment is 44 percent higher than the national average. AppHarvest aims to develop this area into an agricultural technology hub
AppHarvest's new indoor farm in Kentucky is creating jobs and shows an alternative, sustainable form of agriculture and farming.
The world's largest indoor farm just created 300 jobs in Kentucky. | AppHarvest/Instagram
August 21, 2020
High-tech greenhouse developer AppHarvest just opened the world’s largest indoor farm in Kentucky, creating 300 full-time permanent jobs.
The 2.76-million square foot controlled environment agriculture facility is based in Morehead, Eastern Kentucky. A region where unemployment is 44 percent higher than the national average. AppHarvest aims to develop this area into an agricultural technology hub.
“Eastern Kentucky, with its central U.S. location, provides the perfect place to build AppHarvest’s indoor farms,” said Johnathan Webb, the founder, and CEO of AppHarvest. “While also providing much-needed jobs to a ready workforce.”
AppHarvest combines agriculture with cutting edge technology to promote sustainable change within the industry. The new indoor farm drastically reduces the land needed to increase food production. It uses no pesticides and no GMO products.
All water needs are met exclusively by a closed-loop, recycled rainwater system. This also minimizes the water runoff unavoidable with traditional agricultural methods. Overall, AppHarvest’s sustainable greenhouses use 90 percent less water than other farming.
“It’s time for agriculture in America to change,” continued Webb. “The pandemic has demonstrated the need to establish more resilient food systems, and our work is on the forefront of that effort.”
The transportation of fresh produce can have significant carbon emissions.
The Future Of Farming
In addition to job creation, the new farm’s location will also reduce production costs and carbon emissions.
Morehead is less than one day’s drive from 70 percent of the U.S. population. This means a reduction in diesel fuel costs by 80 percent and allows for more competitive pricing against low-cost foreign imports.
AppHarvest recently closed on its $28 million Series C round of fundraising, making a total of over $150 million in just two years. The company has also expanded its board to include investor and author J.D. Vance, Rise of the Rest Seed Fund partner Anna Mason, and AOL co-founder Steve Case.
Impossible Foods CEO and plant-based food proponent David Lee and lifestyle icon and keen vegetable gardener Martha Stewart also sit on the AppHarvest board. Stewart said: “The future of food will be, has to be, growing nutrient-rich and delicious produce closer to where we eat.”
“That means food that tastes better and food that we feel better about consuming,” she added. “AppHarvest is driving us towards that future and working from within Appalachia to elevate the region.”
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.
Farming In The Desert: Are Vertical Farms The Solution To Saving Water?
When I told people I was going to grow tomatoes in the desert, they thought I was crazy," Sky Kurtz, founder of Pure Harvest Smart Farms, told DW
Jul. 23, 2020
By Isabelle Gerretsen"
When I told people I was going to grow tomatoes in the desert, they thought I was crazy," Sky Kurtz, founder of Pure Harvest Smart Farms, told DW.
With just an average 12 days of rain a year, less than 1% arable land, a desert location, and an 80% import rate for food, the United Arab Emirates (UAE) seems an unfavorable place to set up a farm.
Kurtz is one of several entrepreneurs using high-tech farming techniques to boost crop production in the Emirates. Pure Harvest built the first climate-controlled greenhouse in Abu Dhabi in 2017.
Prompted by arid conditions and a desire for greater food security, the country is investing millions in technologies — such as vertical farming — that could make it an unlikely agricultural pioneer.
Vertical farms can grow a rich variety of different crops by stacking them in layers under LED lighting in climate-controlled greenhouses and watering them with mist or drip systems. The process is tailored to each crop's specific needs, resulting in high-yield, year-round harvests."
It takes 30 to 40 days to grow leafy greens out in the field. We can grow that same crop in 10 to 12 days," says Marc Oshima, co-founder of Aerofarms. The company received funding from the Abu Dhabi Investment Office to build the capital's largest indoor vertical farm, with 800 different crops, by 2021.
Water Scarcity and Fossil-Fuel Reliance
The technology uses minimal land and up to 95% less water than conventional agriculture.
The hydroponics system places the plants' roots directly into a water-based and nutrient-rich solution instead of soil. This "closed-loop" system captures and recirculates all the water, rather than allowing it to drain away — useful for a country like the UAE suffering from extremely high water stress.
Globally, agriculture accounts for 70% of freshwater withdrawals, and UAE is extracting groundwater faster than it can be replenished, according to the International Center for Biosaline Agriculture (ICBA)."
Water is very expensive over in the UAE, but energy is cheap as it is subsidized," says Jan Westra, a strategic business developer at Priva, a company providing technology to vertical farms.
The artificially controlled environment is energy-intensive because the air conditioning and LED lights need a constant source of electricity.
This bringing forth of life in the desert could come at a high environmental cost. Most of that energy comes from carbon-emitting fossil fuels, even as the Middle Eastern country feel the effects of climate change.
By 2050 Abu Dhabi's average temperature is predicted to increase by around 2.5°C (36.5 F) in a business-as-usual scenario. Over the next 70 years, patterns of rainfall are also expected to change.
Integrating Renewable Energy
Although Pure Harvest is building a solar-powered farm in neighboring Saudi Arabia, its UAE operations get electricity from the carbon-intensive national grid.
Investing more in renewables "is a goal of ours," Kurtz told DW. He said the company has not set a clean energy target but is working on various green power projects, including a plan to integrate solar power generated in UAE into its operations.
However, Willem van der Schans, a researcher specializing in short supply chains at Wageningen University in the Netherlands, says sustainability and clean energy should be "inherent in the technology and included in plans when starting a vertical farm."
He argues that many vertical farming companies are not sustainable in terms of energy as they still view clean power as an optional "add-on."
Ismahane Elouafi, director-general of the government-funded ICBA in Abu Dhabi, acknowledges that vertical farming has some way to go before achieving "real sustainability," but she believes the innovations are "promising."
Improved battery storage, increasingly efficient LED lights, and cheaper solar panels will help, she adds.
Local Solutions
By 2050, the UAE government wants to generate almost half its energy from renewable sources.
Fred Ruijgt, a vertical farming specialist at Priva, argues that it's important to factor transport and refrigeration into the energy equation. Vertical farming uses more energy to grow crops than traditional agriculture, but because crops are grown locally, they do not have to be transported by air, sea, or truck over long distances."
The energy-saving is difficult to calculate exactly, but the advantages of locally grown crops are huge," he says, adding that those grown in vertical farms not only use less water and pesticides but that they also have a longer shelf life due to minimal transportation time.
Food Security and Coronavirus
In 2018, the UAE set out its vision to become a hub for high-tech local food production.
Companies and investors have flocked to the region, attracted by the 0% corporate tax rate, low labor costs, and cheap energy. With their help, the UAE aims to reduce its reliance on imports and make its food system more resilient to shocks like climate change and pandemics.
Oshima from Aerofarms says the coronavirus pandemic has brought "greater appreciation of how fragile the supply chain is and raised questions about food safety and security."
When the UAE went into lockdown in April, imported supplies of perishable goods like vegetables fell and business boomed for local suppliers.
ICBA's Elouafi said they have helped keep the UAE well-stocked during the pandemic."With the help of local food production and adequate imports, there has been absolutely no shortage of food in the UAE," Elouafi told DW.
Climate change, however, poses an altogether more complex threat to the country in the long-term. Given climate change's likely impact on food production, she says vertical farming has shown it is "an economically viable proposition even with harsh climatic conditions."
Reposted with permission from Deutsche Welle.
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Martha Stewart, J.D. Vance And Impossible Foods’ David Lee Join Board of AgTech Leader AppHarvest
Company adds executives from The Carlyle Group, Impossible Foods and raises new round from sustainability-focused investors such as Jeffrey Ubben and James Murdoch as COVID-19 heightens need for more resilient domestic supply chains
The company adds executives from The Carlyle Group, Impossible Foods and raises new round from sustainability-focused investors such as Jeffrey Ubben and James Murdoch as COVID-19 heightens need for more resilient domestic supply chains
AUGUST 6, 2020 – MOREHEAD, KENTUCKY – AppHarvest announced today that food entrepreneur and icon Martha Stewart, Impossible Foods Chief Financial Officer David Lee, and best-selling author and investor J.D. Vance, have joined the company’s Board of Directors as it prepares to open one of the world’s largest indoor farms this fall in Morehead, KY. Starting with non-GMO tomatoes, AppHarvest’s farms will provide freshly grown American fruits and vegetables for national grocers, meeting the enormous and growing demand for locally grown produce amidst the supply chain challenges created by the current COVID-19 pandemic.
“The future of food will be, has to be, growing nutrient-rich and delicious produce closer to where we eat,” Stewart said. “That means food that tastes better and food that we feel better about consuming. AppHarvest is driving us towards that future and working from within Appalachia to elevate the region.”
Added Vance, “The last few months have taught us that our food system is a little more precarious than we realized. AppHarvest will change that, and it will do so by building a sustainable, durable business in Appalachia, and investing in the people who call it home.”
Added Lee, “AppHarvest’s innovative approach to agriculture has the potential to dramatically change the way we get our produce and the impact our food has on the natural environment. I’m excited to join their mission as they enter this next phase of growth.”
Anna Mason, Partner at Revolution’s Rise of the Rest Seed Fund, the fund led by AOL Co-founder Steve Case to back companies outside of Silicon Valley, will also join the Board. “AppHarvest’s rapid expansion and job creation is exactly what Rise of the Rest envisioned with its focus on helping companies in Middle America grow,” Mason said.
Inspired by the belief that the technology already exists today to grow dramatically more food, with far fewer resources, AppHarvest’s indoor farms reduce the need for acreage, use no harmful pesticides, lessen fuel used in shipping, and are the first of their size that will rely entirely on recycled rainwater for all water needs. AppHarvest’s closed-loop water system eliminates agricultural runoff common in open-field agriculture. This is critical as the U.S. ramps up efforts to secure food systems that can withstand health and climate disruptions.
“It’s time for agriculture in America to change,” said AppHarvest Founder & CEO Jonathan Webb. “The pandemic has demonstrated the need to establish more resilient food systems, and our work is on the forefront of that effort. Eastern Kentucky, with its central U.S. location, provides the perfect place to build AppHarvest’s indoor farms while also providing much-needed jobs to a ready workforce.”
AppHarvest’s 2.76-million-square-foot controlled environment agriculture facility has already created 100 construction jobs and will create more than 300 full-time permanent jobs for residents of Eastern Kentucky, where 44 percent more residents are unemployed than the national average.
With its vision to create America’s AgTech capital in Appalachia, AppHarvest has been recognized for its focus on social good. The company has been certified by the independent non-profit B Lab as a
B Corporation, passing a rigorous audit of its sustainability practices.
AppHarvest is also announcing the hires of Marcella Butler as the company’s first Chief People Officer, Jackie Roberts as its first Chief Sustainability Officer, and Geof Rochester as its first Chief Marketing Officer. Butler joins AppHarvest after serving as Impossible Foods' first Chief People Officer, where she led the tripling of employees to more than 650 individuals. Prior to joining Impossible Foods, she worked at Google, first in People Operations, followed by Corporate Development, where she led global acquisition due diligence and integration activities. Roberts joins AppHarvest from The Carlyle Group, where her roles included Chief Sustainability Officer. Prior to The Carlyle Group, she served in several senior roles at the Environmental Defense Fund. Rochester, who has decades of experience in marketing and corporate social responsibility, previously served as Managing Director and Chief Marketing Officer of The Nature Conservancy with prior work at WWE, Showtime, Comcast, and Procter & Gamble.
AppHarvest’s Board and staff additions come as the company closes its $28 million Series C funding round. Combined with the company’s prior funding rounds, including project financing, AppHarvest has attracted more than $150 million in investment in just over two years.
Narya, the new venture capital firm co-founded by Vance and Colin Greenspon as well as backed by leading entrepreneur and venture capitalist Peter Thiel, led the investment round with participation from existing investors ValueAct Capital’s Spring Fund, Revolution’s Rise of the Rest Seed Fund, and Equilibrium, which has provided nearly $100 million in project financing to date.
New investors include Lupa Systems, the private investment firm founded last year by James Murdoch (who along with the ValueAct Spring Fund and Equilibrium, are leading the way for venture’s expansion into sustainability-focused investments); Breyer Capital, founded by early Facebook investor Jim Breyer; food and agriculture fund S2G Ventures (Seed 2 Growth); Black Capital, led by NBA legend Kevin Johnson; and Endeavor Catalyst, the co-investment vehicle through which Endeavor invests into companies founded by its entrepreneurs. Endeavor selected Webb as an Endeavor Entrepreneur in 2019.
“AppHarvest is poised to be a leader of the modern agricultural transformation, and we’re enthused to be a part of its upcoming launch and growth phases both in the U.S. and internationally,” said Frederic Michel, Partner at Lupa Systems. “The team is developing a compelling model that can respond rapidly to the needs for efficiency, sustainability, quality, and resiliency in the food sector today.”
The Series C funding round will allow the company to continue to recruit top-tier talent from around the globe as it prepares to build additional farms throughout Central Appalachia.
About AppHarvest
AppHarvest is building some of the world’s largest indoor farms, combining conventional agricultural techniques with today’s technology to grow non-GMO, chemical-free fruits and vegetables to be sold to the top 25 U.S. grocers. The company has developed a unique system to reduce water usage by 90% compared to typical farms, as a 10-acre, on-site rainwater retention pond pairs with sophisticated circular irrigation systems. The system also eliminates agricultural runoff entirely. By locating within Appalachia, AppHarvest benefits from being less than a day’s drive to 70% of the U.S. population. That lowers diesel use in transportation costs by 80%, allowing the company's fresher produce to compete against low-cost foreign imports.
US: MINNESOTA: North Market Installs Onsite Vertical Farm
Black-owned and operated by the nonprofit organization Pillsbury United Communities (PUC), the grocery store North Market has installed a hydroponic vertical container farm from Freight Farms onsite
Source: North Market
07.28.2020
By Emily Park
MINNEAPOLIS – Black-owned and operated by the nonprofit organization Pillsbury United Communities (PUC), the grocery store North Market has installed a hydroponic vertical container farm from Freight Farms onsite.
Built-in an upcycled shipping container and controlled by a data-driven IoT platform called farmhand, the 320-square-foot farm is located in the retailer’s parking lot.
Regardless of the season, it will provide the market’s community with fresh produce (all pesticide- and herbicide-free) year-round. Growing at commercial volume, the farm uses less than 5 gallons of water a day.
North Market will start by harvesting 11 flavorful crops: three varieties of mini compact romaine lettuces, green oakleaf, basil, Thai basil, rosemary, thyme, lemon balm, sage, and mint.
“At Pillsbury United Communities, our mission is to co-create enduring change toward a just society in which every person has personal, social, and economic power,” said Kim Pepper, chief engagement officer of PUC. “The closed-loop food ecosystem we have built around North Market is one of the ways we are working to realize this vision. Greens grown onsite in the Freight Farm are sold at North Market ensuring community access to fresh, affordable, local produce year-round. Produce that doesn’t sell is rescued, prepared, and served at our free community café."
Some of the added benefits of the onsite vertical farm include:
Elimination of food miles: the crops only travel steps from the parking lot to the store
Consistent reliability: store can produce its own line of crops for shoppers, with year-round consistency regardless of the weather or changing climate conditions in Minneapolis
Quality and freshness: by being grown hyper-locally (in this case, right onsite), produce stays fresh for far longer, reducing food waste for both the store and consumers
Cost reduction: in removing distribution costs from the equation, PUC is able to pass savings on to the consumer
Traceability & safety: the farm’s integrated IoT platform, farmhand, enables complete traceability of crops from seed to harvest
North Market also sells produce from the PUC’s other soil-based farms in the city. To get those crops to the store, bicycle couriers pick up freshly harvested food from PUC’s Southside gardens and deliver them to North Market to be sold. Completing the cycle, they also pick up surplus food and bring it back to the Southside to be distributed in community delivery meal programs. The remaining food is composted back at the Southside gardens.
Is The Future of Farming Indoors?
The global population is predicted to reach 9.7 billion by 2050, and to feed everyone, it’s estimated that global food production will need to increase by up to 70% in the next 30 years
July 14, 2020
Brian Kateman Contributor
I write about sustainable and ethical technology and consumer trends.
The global population is predicted to reach 9.7 billion by 2050 and to feed everyone, it’s estimated that global food production will need to increase by up to 70% in the next 30 years.
There are many challenges to overcome before fears of a worldwide food shortage can be allayed, including rising temperatures and more frequent droughts caused by global warming. These obstacles are making traditional farming methods increasingly inefficient and unpredictable.
Traditional farming has also been hit hard by the COVID-19 pandemic. According to the FAO, border closures, quarantines and disruptions to supply chains are limiting some people's access to food, especially in countries hit hard by the virus or already affected by high levels of food insecurity.
There’s an emerging consensus that the agriculture industry needs to adapt to use less water and chemicals, make crops less vulnerable to changes in the climate, and produce more reliable yields. Part of the answer may lie in the emerging start-ups growing produce in indoor environments, where growing conditions can be better managed.
The indoor farming technology market was valued at $23.75 billion in 2016, and is projected to reach $40.25 billion by 2022. Yields are typically much higher than traditional farming methods. Crops from indoor farming are grown in three dimensions, rather than two – and can be grown all year round, independent of external weather conditions.
Square Roots next-generation farmers growing basil. CRAIG VANDER LENDE
One of Square Roots’ indoor farms, for example, produces the same amount of food as a two- or three-acre farm annually, just from 340 square feet. This yield is achieved by growing plants at 90 degrees, and by using artificial intelligence (AI) to ensure the environment is optimal for each specific plant, including the day and night temperatures and amount of CO2 needed.
“Our indoor farms are living biosystems, constantly adapting to maintain optimal climates for growing specific crops. We’re then able to understand how changes in the climate can impact yield taste and texture,” says Tobias Peggs, Square Roots’ chief executive.
Not only could indoor farming help adapt to a warming planet, but it has the potential to help slow down climate change by being more sustainable – using less water and producing fewer emissions. While estimates vary widely, according to the United States Environmental Protection Agency, agriculture accounted for 10% of all greenhouse gas emissions in 2018; it is also highly dependent on, and a pollutant of, water.
Square Roots’ pop-up farms are built in shipping containers in cities, often in parking lots. They serve local communities, which means reduced emissions compared to traditional agriculture, which often involves transporting food much further. For example, it has 10 farms in Brooklyn that serve 100 retail stores all within five miles of the farm.
At the Plenty headquarters in South San Francisco, leafy greens use up one percent of the land and five percent of the water compared to traditional outdoor farms, says Matt Barnard, the start-up’s Chief Executive Officer, and Co-Founder.
AeroFarms’ indoor farm in New Jersey grows greens including baby kale, baby arugula, and baby watercress using 95% less water than conventional agriculture on just one percent of the land required. The crops grow under LED light with no pesticides and a fraction of the fertilizer used on traditional farms.
AeroFarms environmentally-controlled indoor farms can grow all year round independent of climate and ... [+] AEROFARMS
Marketing director Alina Zolotareva says being able to produce have ready-to-eat produce that doesn’t require rinsing helps to reduce water usage.
“This is a transformational innovation for agriculture at large,” she says, “as access to fresh water for growing food is one of the most pressing challenges of our time.”
As well as fewer miles and less water, indoor farming doesn’t require pesticides. This is better for the environment and human health as it eliminates the risk of water contamination due to run-off, and is in line with increasing consumer demand for non-GMO produce.
Plenty eliminates the need for pesticides with LED lights, which are synced with the crop’s growth, Barnard says, to provide the ideal spectrums and exposure and minimize energy usage.
“Our sensor system ensures each plant gets exactly the amount of purified water it needs, and any excess water is recycled through a closed-loop irrigation system resulting in greatly reduced water consumption and zero waste,” he says.
Nanobubbles super-saturates the water with oxygen, making the plant roots healthier. This promotes ... [+]
MOLEAER
Other farms are using nanobubble technology, such as Moleaer, which has allowed more than 100 indoor farms to connect their irrigation systems to generators that provide oxygen via sub-micron gas-containing cavities to the plant’s roots to provide chemical-free water. These nanobubbles result in healthier roots, more resilient plants, and increasing crop yields, says Nick Dyner, CEO of Moleaer.
“Our oxygen transfer efficiency provides the most cost-effective solution to elevate oxygen levels in the water, which in turn promotes beneficial bacteria and root development,” he says.
The company is also working on a new NASA-approved space farming research project, exploring how astronauts on the International Space Station can grow their own food in microgravity using nanobubble technology.
There are concerns that it’s an expensive investment, but Dyner says Moleaer has various systems so it’s accessible to all sizes of indoor farms, high- and low-tech. Some products do, however, require growers to connect an external source of oxygen, which must come from a gas supply company or an onsite oxygen generator, which Moleaer provides.
“In many cases, traditional farmers may have more to gain by using our technology, since the capital investment is significantly less than the most advanced growing technologies available today, which are often out of a typical farmer’s budget,” Dyner says.
“Nanobubble technology is a cost-effective, chemical-free, and scalable solution that allows growers to increase crop yields and shorten cultivation time - which will be much needed to feed our growing population in the future.”
Peggs says Square Roots is also focused on ensuring its technology makes farming an accessible career path for young people who live in urban areas.
“If you’re a new young farmer at Square Roots, our app will guide you through what to do; what’s growing, what state is in it, what do we need to do today based on where things are in the growth cycle. Through our app and our training program we’re able to bring new people into our team, even folks with zero horticulture experience, and get them ready to go in about six weeks.”
Indoor farming is putting the youth back in agriculture. PLENTY
But despite being an emerging option for youth in the city, Barnard predicts most will remain traditional farmers.
“The world still needs the field and will need the field forever. We support the field by growing in addition to the field. Over time, [indoor] farming systems will become more accessible and affordable. Both field and indoor farming will be necessary to support global food demand.”
Viraj Puri, Co-Founder, and CEO of Gotham Greens, a pioneer in urban indoor agriculture that operates over 500,000 square feet greenhouses in 5 U.S. states, echoes this sentiment: “Growing produce indoors certainly has an increasing role to play in the future of sustainable food production. While indoor farming may not represent the future of all fresh produce production, for certain types of crops such as tomatoes, cucumbers, leafy greens, and herbs, it will become more prevalent. Customers are increasingly recognizing the reliability, consistency, and high quality of greenhouse-grown produce that’s grown in close proximity to large population centers using fewer natural resources. Other agricultural commodities like grains or fruits or root vegetables, however, can’t yet be produced.”
However, Dyner predicts that, eventually, the majority of agriculture will move to indoors, in vertical farms— the practice of growing crops in vertically stacked layers—in urban areas.
“These settings enable traditional farming to shift to controlled growing conditions, using new technology and automation, and reducing the risk of exposure to harsh climate conditions,” he says.
Plenty's goal is to build vertical farms in urban hubs and distribute each farm’s harvest locally ... [+]
PLENTY
Start-ups like Square Roots, Plenty, and AeroFarms currently practice vertical farming, which is a form of indoor farming that relies on artificial lighting such as LEDs instead of drawing on natural sunlight.
Other indoor farming companies like Gotham Greens grow produce in high-tech glass-clad greenhouses that primarily rely on natural sunlight for plant photosynthesis. According to Puri: “vertical farming is a more nascent technology within the indoor farming sector and the costs of running a vertical farm with artificial lighting and air conditioning is currently not as cost-effective as relying on natural sunlight in greenhouses.”
Gotham Greens takes a different approach, relying on natural sunlight rather than the artificial ... [+]
GOTHAM GREENS AND JULIE MCMAHON
“Greenhouse indoor farming technology has been in operation globally for 20 to 30 years and is proven to be commercially viable. That being said, the costs around artificial lighting and other vertical farming technologies have been coming down significantly in the past few years,” he adds.
Nonetheless, indoor farm technology start-ups, broadly speaking, don’t see themselves as disruptive, but as being on the same side of traditional farms, for the wider cause.
“The common enemy is the industrial food system, shipping food from one part of the world to the other, rather than locally produced food,” Peggs says.
Indoor farms don’t work in competition with each other, either; they work collaboratively by forming a network that shares data. For example, AeroFarms is collecting data on a research project with the non-profit Foundation for Food & Agriculture Research to understand the sensory and nutritional characteristics of leafy greens for the benefit of the entire agriculture industry.
However traditional and AI-based indoor farming work together in the future, there’s little doubt that indoor farming is helping to meet the needs of a growing global population and support traditional farming, which is both at the mercy of and exacerbating a warming planet. Only one method will find itself in space – but there’s space for them both.
I am co-founder and president of the Reducetarian Foundation, a nonprofit organization dedicated to reducing consumption of animal products.
Lead Photo: The world’s current agricultural practices are unsustainable, and indoor farming may offer solutions ... [+] PLENTY
Agrihoods and Access To Healthy Food
Enter agrihoods: the community feeling of suburbia mixed with the progressive thinking of the city, sprinkled with the splendor of the country
May 13, 2020
Written by Tinia Pina | Re-Nuble
The question has always been there: city life or country life? However, in the 1850’s, in response to a rising urban population and as a result of improved transportation methods, the suburbs began to sprawl out from large metropolises. Now, roughly 80 percent of Americans live in urban areas. Yet, the demand for closed-loop food processes continues to increase. Urban area citizens still want access to sustainable and healthy food systems.
Defining Closed-loop Systems
By definition, a closed-loop system is one in which the operation is regulated by feedback. To clarify, feedback, in this sense, means that a portion of the output is fed back into the system to act as part of the excitation. The output cannot exist independent of the feedback.
Closed loop food systems produce high-quality, healthy foods using less energy and less water. When locally-sourced, their production and sale contributes positively to local economies and develops pride within the community.
Agrihoods and Access to Healthy Food
Enter agrihoods: the community feeling of suburbia mixed with the progressive thinking of the city sprinkled with the splendor of the country. There are several reasons people are drawn to this style of living. First and foremost is access to locally grown, sustainable food. A close second is the closed-loop process: the inhabitants enjoy the crop and the remains are composted for use as fertilizer. There is an eloquent beauty in the cyclical nature of closed-loop food processes.
In addition to providing sustainable, locally-sourced food, agrihoods provide steady work for farmers who gain access to affordable farmland in exchange for their services. Most farmers rarely enjoy a steady salary; this is not true for those employed by agrihoods. Most earn a salary of $35,000 to $100,000 annually and receive free or reduced housing.
While these little utopias are springing up all over the country, they remain out of reach for many Americans that either cannot afford the amenity of living in a neighborhood with a resident farmer or who simply prefer to live in the bright lights.
However, the opportunity for a closed-loop food process can exist even in the middle of Manhattan, giving urban areas access to healthy food. Soilless systems provide a closed-loop, sustainable method of food production that is as valuable to communities as it is to farmers. Soilless systems can be established indoors or out and can take on any size. Additionally, it requires less water to produce foods in a soilless system than in a traditional, soil-based system because water is continuously circulated; not lost to runoff.
Soilless Systems Provides Healthy Food Access for Urban Areas
Recent studies have shown that indoor, soilless systems require up to 90% less water than traditional farming methods. By keeping the plants at optimum conditions throughout the growth cycle, they are better able to utilize nutrients and produce more fruits and vegetables per gallon of water used.
Consumers reap the benefits of locally-sourced, organically grown produce while farmers enjoy a sustainable production method. These systems remedy some of the challenges presented to those that attempt to bring in healthy, locally-sourced produce to urban areas; such as zoning and infrastructure.
However, what has been missing in most soilless systems is true feedback. The fertilizers and growth nutrients used in most systems are petroleum-derived and chemical-based. They are produced in a lab and have nothing to do with repurposing food waste. They fail to take advantage of the nutrients that exist in food waste.
Access to high-quality, bio-derived agricultural materials is challenging, especially for farmers and hobbyists that utilize alternative growth methods. Re-Nuble was developed to meet this need. Re-Nuble products are 100% bio-based, sourced from vegetative food waste, meaning that everything that goes into making Re-Nuble comes from plants; there are no petroleum-based ingredients. As we continue to carry out our own R&D, we hope to identify even more ways to help soilless farms regulate their operations through feedback, providing urban areas with access to healthy food.
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Tags: agrihoods, healthy food, urban agriculture, urban food