Hydroponic farming can change lives in Africa
By Jeremy Daniel, CIO
For refugees and communities in crisis, the use of analytics-based hydroponic farming in built-in shipping containers can help to break the cycle of poor nutrition and hopelessness.
Life in a refugee camp, or an area devastated by a natural disaster, can be unbearably difficult. Most of us will never experience that kind of hardship and deprivation but for approximately 10 million people in 2019, around 1% of the global population, this is the day-to-day reality of lives.
The smart, effective use of technology that recognizes their circumstances can have a profound effect on the lives of people who are living on almost nothing.
AgriLED is a South African startup with a mission to supply small, hydroponic farms, built inside shipping containers, to refugee camps and disaster agencies around the world. An extremely stable environment is the key to good, regular growth in Controlled Environment Agriculture (CEA). The system they have developed makes use of AWS cloud services, customized third-party software and an API to display climate, water and mechanical data on a customised dashboard.
Harvesting technology to grow food with hydroponic farming
Adopting a technology-driven approach to hydroponic farming food production is a fast-growing sector of some of the continent’s most-developed economies.
AgriLED’s vision caught the eye of international investors and they were able to raise foreign investment worth €500 thousand in a closed investment round with the Hivos Food and Lifestyle Fund, based in the Hague, the Netherlands, whose goal is to “invest to make a financial return and to create a sustainable food system from farm-to-fork” in Southern Africa.
Aspiring farmers learn the techniques of remote sensoring and CEA.
The project began in 2015 when Theo Pistorius, the CEO of AgriLED, met his partner Richard Lomax, and they combined their expertise in microbiology, remote sensing and electronic engineering to create something new and meet a glaring need.
The ready-to-ship instant farms will arrive in a location with harvest-ready plants, with growing that happens in transit, and crops which can be harvested from the moment the container is deposited and set up.
The results from the prototypes have been stunning. AgriLED has developed their systems and technology to the point where each container can feed 50 people per day on a diet of leafy greens vegetables such as spinach, as well as lentils and strawberries.
To deliver that kind of yield on a regular basis requires a sophisticated suite of technology tools that deliver detailed analytics on every single plant that is growing.
The company uses a 3rd party service called Cape Sea Observa to collect, display and react to the data
In CEA, these are most important parameters to measure:
- Climate: Temperature, Airflow, etc.
- Water: pH, O2 concentration etc.
- Mechanical: Pump control, Light control, etc.
- Other: Plant growth stages, access control, etc.
By setting dynamic notification ranges on the dashboards and widgets, the organization is able to map the parameters on the charts for each crop, so they can pick up quickly when a crop has gone out of bounds.
The full-spectrum grow lamps are installed to ensure the even distribution of light, allow for leafy greens to be grown all year round, and are “designed to trigger specific parts of the plant DNA in order to express the nutrients and flavors.”
“We looked at the problem holistically, tried to figure out what refugees will really need and build with the solution in mind. At the end of the day, we think we have come up with an affordable, solution to provide fresh fruit and vegetables that can scale easily and be deployed at a moment’s notice,” Pistorius says.
Real-time monitoring empowers the small-scale farmers to proactively measure their crop’s current status and history, to respond in time to threats such as rot and disease, and nurture the particular lines of crops that are proving the highest yield and nutrition.
Sensors, analytics manage plant health
Sensors in the containers are used to gather data and send it back to headquarters, where it is analyzed and monitored. All aspects of the process from the amount of dissolved oxygen, plant health and weight, to temperature and electro-conductivity of the water are all managed via the cloud. When an intervention is required, it’s either triggered automatically or a message is sent out to somebody on-site who can take the necessary action.
AgriLED makes use of a variety of sensors, from vented temperature humidity sensors to CO2 monitoring and substrate moisture sensors that send out alerts when a particular section of the container farm is in need of irrigation or drainage. The data feeds into the analytics dashboard which is hosted with AWS and displays the incoming data on a dashboard that is there to ensure stability and optimal growth.
Pistorius understood the need to build all aspects of the project in order to let them scale easily and that takes into account the technology issues as well as the operational. “The systems we use are cloud-based but they drive real world nuts and bolts problems,” he explains. “It’s no use taking a pure digital approach in a hardware environment. That’s not what is needed rather go for a blended approach.”
Angus Houston (Sales Director)
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