There are two main models used, hydroponics and aeroponics. The former is where plants are grown in a nutrient-rich basin of water and the latter is where roots are periodically sprayed with a mist containing water and nutrients. Aeroponics uses less water overall, but is technically more difficult to execute.
Urban Crops, a Belgian company, uses hydroponics and says that vertical farming yields more crops per square metre than traditional farming or greenhouses do.
Value for Dubai
Vertical farming facilities can technically be built anywhere and are
unaffected by changing seasons. Given Dubai’s unique climate, companies such as
Urban Crops could support the city’s ‘Grow Your Food’ initiative which aims to
support the vision of Dubai Municipality – to build a happy and sustainable
city through the promotion of food security.