Some Urban Crops Can Exceed Yield of Farms, Says UK Study

A study led by Lancaster University researchers and published in the American Geophysical Union journal Earth’s Future found that urban gardeners and hydroponics can meet and sometimes exceed the yields of rural farms. 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 found that urban yields for some crops, like cucumbers, potatoes, and lettuce, are two to four times higher than conventional farming. Other urban crops had yields comparable to rural farms. The study also explored which crops grew well in gray spaces (like rooftops), in hydroponic systems, and in vertical indoor growing conditions.