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MENAFN - Arab News - 27/10/2012

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(MENAFN - Arab News) ABU AHMED looks out over a sea of grey, empty Gaza rooftops, and smiles as he looks back at the lush greenery sprouting in tubs and pipes on top of his apartment building.

He is part of a United Nations agency project to introduce cutting-edge urban agriculture to Gaza City, teaching Palestinians to farm without soil in the space available to them in one of the world's most densely populated places.
Most of his rooftop is given over to an aquaponic system, which produces food by linking fish tanks of tilapia with gravel-filled planters.

The integrated system feeds the water from the fish tanks into the plant beds, where Abu Ahmed's crops - lettuce, peppers, broccoli, celery and herbs - are fertilized by waste produced by the tilapia.

As the water trickles through the gravel, the plants absorb nutrients from the fish waste, cleaning the water, which then replenishes the tanks.

"The idea really was to help the poorest people in Gaza be able to grow some of their own food, and healthy food, grown without pesticides," explains Mohammed El Shatali, the project's deputy manager.
For Abu Ahmed, the project has been a major success.

Not only is he using the integrated aquaponic system, he had also set up his own subsidiary hydroponic system, growing additional crops in plastic pipes that are fed by the same water that runs through the aquaponic system.
"I had a bit of experience with agriculture and farming before, but nothing like this," he says, examining the leaves of a celery plant.

Thanks to the project, the 51-year-old has been able to feed his 13-member family fresh vegetables and fish throughout the summer.

"The fish taste great, although I'm trying not to eat too many of them because I'm breeding new ones so I won't have to buy more." There have also been other benefits from the system, he says, explaining that it cools the apartments below by providing shade.

"It's great for the children. Nowadays they don't see farming, they barely see trees or plants. It's great for them to see this because it gets them interested in growing and planting things." Gaza's 1.6 million residents live on just 360 square km (140 square miles) of land, and much of that is off limits because Israel maintains a 300-meter (yard) deep exclusion zone along the length of the border fence.

In Gaza's main towns and cities, empty land is being eaten up by the construction of multi-story apartment buildings, leaving little space for agriculture.

The challenges prompted the UN's Food and Agriculture Organization (FAO) to look for new ways to maximize crop production in tiny spaces.

In Gaza City's Zeitun neighborhood, 34-year-old Eman Nofal tends crops in a small yard next to her apartment. Peppers have been her biggest success this year, and both sweet and spicy red peppers dot the greenery in her planters.

Nofal's husband was killed in fighting between rival Palestinian groups Fatah and Hamas in 2006, leaving her the sole provider for their four children.
When she heard about the project, she thought it could ease the cost of feeding her family.

"It's been great. It's really easy, the children even help me maintain the plants," she says, acknowledging that the concept was somewhat alien at first.

"All our lives, we learnt that farming meant growing things in the ground, in soil, so it was strange to hear it was possible to grow in water and gravel, but I love the idea." Nofal says the project also gives her pleasure.
"Just the way it looks is really nice.

Sometimes I come out here just to enjoy the greenery and to watch the fish play with each other. It relaxes me." The project has faced setbacks, including the Gaza-specific challenge of power cuts of up to 12 hours a day, which shut down the pumps that transfer water between the fish tanks and plant beds.

"Electricity has been one of the most difficult challenges," says Chris Somerville, an urban agriculture consultant with the FAO.

"At 30 degrees Celsius (86 Fahrenheit), the capacity of the water to hold oxygen reduces, and during the summer many of the beneficiaries had fish die." New participants will receive a battery-powered pump to tide them over during power cuts, and the FAO is experimenting with fibers that could be used in hydroponic systems to retain moisture when power cuts stop the water flow.

Initially, the project also had to overcome a certain level of skepticism, Somerville says.

"To tell agrarian societies that you're going to grow plants without soil can sometimes be a bit of a jump," he laughs.

But the project has been so successful that the next cycle will expand from 15 aquaponic participants to around 80, with another 80 homes operating hydroponic systems.

It will be the first time the FAO has implemented aquaponics on this scale, and the agency is now looking at implementing the project elsewhere in the world.

"To be able to take this Gaza model and bring it to other countries would really be a massive achievement," Somerville says.

 






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