Does that seem likely to make a difference? The study covered individual gardens as well. The low-tech gardening practices they mention sound exactly like backyard gardens.
Of course. The whole study is about cities, even the first sentences already make this very clear. It has nothing to do with normal gardens, nothing _at all_.
I may have missed the part in the paper which explains why a backyard garden is dramatically different in efficiency if said backyard is in a city versus the suburbs. Could you clarify or point me to the thing you’re referring to?