"Economists need to rethink what free trade means and what its benefits are."
Getting back to food production, I’m talking about basic necessities: free trade is for the realm of the extras – bananas, coffee, et cetera, while the basic necessities should be locally provided. So this is a model where a city or family are self-serving in terms of basic needs, and this is the model which is developing in urban agriculture; it’s about being resilient for basic needs, finding a new balance between grow your own and international trade. Urban agriculture is about what’s feasible – what makes sense – not about what’s possible. So if it makes sense for a city to grow salad products instead of importing them, then that’s OK: it’s resilient, and it has a better quality.
Gardener or farmer
I’ve been working on urban agriculture for the last 10 years. In Rotterdam when we started, we looked at the allotments and how they are managed. Over half of these are worked by people with an ethnic background other than Dutch, and 100% of them use the gardens to grow food. For the municipality, these allotments are zoned as recreational however in these allotments the use is 100% farming; they grow the local herbs and vegetables they cannot buy in the Dutch supermarkets.
At Wageningen, we are socially inclusive about urban agriculture – even herbs on a balcony are included; anything that contributes to food security and food resilience. In the situation where many farmers have no successors, urban small-holdings can be perceived as breeding grounds: locals learn how to grow food in their garden, move to the Westland greenhouses and learn the trade, and then move on to become farmers themselves.
In Malmo, in Sweden, their policy is to welcome refugees and select those with an agricultural background and offer them training to be employed in the sector. They see urban food growing as a source of human capital.
When vertical farming came along people said: what we have is already good, why do we need these? Dutch farmers are a little conservative, so that is a pitfall. But now, people become more aware of changes in fertiliser availability, energy dynamics, et cetera. By making agriculture more circular, we create places which not only produce, but also that sequester the carbon in the ground and are space efficient. Another point is that the quality is better: fruits like strawberries in vertical urban farms can be kept on the plant longer before harvesting so they are tastier! We have to pick the right high-value products.
People in the US predict that from the 15% currently grown indoors, within 5 years this will be 80% - mainly horizontal. This is driven by climate change. They also predict that ultra-short supply chains will develop: wholesalers will no longer collect produce at the farm; they grow it in their own vertical farm. I’m an economist – so this is about economic dynamics.
"Urban agriculture will become part of our urban metabolism; with a circular flow of waste streams."
Urban agriculture should become more circular and use waste streams, water and sewage from the city to grow food. In Rotterdam there’s a great example where special mushrooms grow on coffee waste. Urban agriculture will become part of our urban metabolism; with a circular flow of waste streams.