Farmers in the UAE
This is hydroponics inside a
greenhouse, an agriculture system without soil. It gives at least 30 per cent
more productivity and saves up to 40 per cent of water compared to conventional
agriculture. Hydroponics is a method of growing plants using mineral nutrient
solutions in water, without soil. Most
of the plant nutrients are supplied by the nutrient solution, rather than by
the media in which the plants are grown. The ADFSC expects to produce more
vegetables using hydroponics in Abu Dhabi farms, said Dr Robert Caudwell,
technical development section manager at the Centre. The UAE farms produce
vegetables and fruit mostly during winter. Productivity goes down considerably
during summer. The new system is expected to change that and may ensure the presence
of local vegetables and fruit throughout the year. The irrigation system
includes a desalination plant too, which highlights the problem of growing
salinity in ground water. The comparatively less amount of water used for
irrigation in open hydroponics farms is further recycled and used in the openfield
farm. In the closed hydroponic systems
under construction at Emiratis' farms, rock wool is the medium. In this system,
most of the plant nutrients are supplied by the nutrient solution, rather than
by the media in which the plants are grown. In the closed hydroponics system
the same nutrient solution is re-circulated and the nutrient concentrations are
monitored and adjusted accordingly. Farmers in Al Gharbia who have slowly been
converting to hydroponics - which allows them to grow fruit and vegetables
using less water and energy - are now being offered loans to help them make the
switch. This technology uses 80 per cent less water, fewers pesticides and less
fertilizer than traditional farming. It's better because it's a more controlled
system. But the system can be complicated to understand for farmers used to
traditional methods.
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