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A Hydroponic Rooftop Farm Grows in the Bronx

Tác giả Gloria Dawson, ngày đăng 14/06/2018

A Hydroponic Rooftop Farm Grows in the Bronx

Photography by Gloria Dawson

Above the non-descript brick apartment buildings in the Morrisania neighborhood of the South Bronx, a large greenhouse glistens, catching the sun’s rays. Inside, rows of leafy greens look out onto a view of the Whitestone Bridge. This hydroponic farm represents both a modern way to bring farming into urban areas, and the first realization of a rooftop farm company’s grand intentions.

The 8,000 square foot greenhouse was constructed and managed by Sky Vegetables, a Massachusetts-based company. The company has operated a research and training farm in Amherst, but this farm is the first of what they hope are many urban rooftop farms. The affordable housing complex where the farm is located is a Leadership in Energy and Environmental Design (LEED)-certified building.

A hydroponic farm makes a lot of sense for a rooftop, said Joe Swartz, the director of farming for Sky Vegetables. While a soil-based system can weigh up to 40 pounds per square foot too heavy for many roofs a hydroponic system weighs approximately 8 pounds per square foot. Many existing roofs are structured for this kind of load. “It allows us to produce virtually on any rooftop,” Swartz said.

Sky Vegetable farms run on the Nutrient Film Technique (NFT), wherein all nutrients are fed into a shallow stream of water. It’s a closed-loop system. The plants absorb what they need of the nutrients and the remainder is caught in the tank and used again. “So it’s basically a zero-waste system,” said Swartz.

The produce appeals to grocery stores because it’s local, can be grown year-round, and uses no pesticides. Building a rooftop farm is an attractive idea for property owners for altruistic reasons and for the tax credits that come with it.

Sky Vegetables’ plan is to leverage these incentives to help build more urban rooftop farms, and their plan seems to be working. Their next venture will be a hydroponic farm on a Boston warehouse, which, at 63,000 square feet, will dwarf this Bronx operation.


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