Urban Crops Can Have Higher Yields Than Conventional Farming.

With special thanks to the University of Liverpool, this research study explores the power of urban farming and how we can use the boom in urban agriculture to tackle food inequality.

As urban populations boom, urban agriculture is increasingly looked to as a local food source and a way to help combat inequitable food access. But little is known about how productive urban agriculture is compared to conventional, rural farming. A new study digs in, finding urban gardeners and hydroponics can meet and sometimes exceed the yields of rural farms.

“Despite its growing popularity, there’s still quite a lot we don’t know about urban agriculture, like whether the yields are similar to conventional agriculture, or even what crops are commonly grown,” says Florian Payen, an environmental scientist at Lancaster University and lead author of a study, published in AGU’s journal Earth’s Future.

“ Some crops, like cucumbers, tubers and lettuces, are two to four times higher than conventional farming.”

Farm Urban, Liverpool

The new study compiles studies on urban agriculture from 53 countries to find out which crops grow well in cities, what growing methods are most effective, and what spaces can be utilized for growing. The researchers find that urban yields for some crops, like cucumbers, tubers and lettuces, are two to four times higher than conventional farming. Many other urban crops studied are produced at similar or higher rates than in rural settings. Cost efficiency remains an open but important question.

La Salle Kitchen Garden, Liverpool.

Most studies on urban agriculture have focused on green spaces, such as private and community gardens, parks and field growing operations. Payen’s work includes “gray” spaces — places in cities that are already built but could be used for growing, such as rooftops and building facades. In both green and gray spaces, the study examines a suite of crops grown in soils versus hydroponics, horizontal versus vertical farming, and natural versus controlled conditions.

To read the full article and and explore the research findings click below.