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Urban Farming. A Blog from Jacques E. Boillat, Sun May 01 2022

I found the article The Town Sheep, or Urban Breeding in Dakar (Senegal)1 when I was looking for scientific papers about Ladoum sheep. The topic Urban Farming is actually a hype, specially in Europe. I will try here to compare urban farming in West Africa, and in Europe.

Urban Farming in West Africa

The Senegalese urban farming article is investigating two reasons for breeding animals in Dakar:

  1. Most citizens of Dakar are not originally from there, a lot of them came from villages that are very far from Dakar. Often times Most of them have breeding experience from their villages before moving to Dakar
  2. Papa Demba Fall is also seeing religious and mystic reasons for urban farming. Most of the farm animals are only produced for religious reasons, especially for the ritual sacrifice of Tabaski. The Ladoum sheep is the best animal for the ritual sacrifice.

The fact that all the sheep of Abou Kane got stolen in 19972, may also be more of the reason for urban farming. Keeping the sheep as close as possible to your house will reduce the risk of them getting stolen!

Urban sheep farms may have a fantastic comfort. Papa Demba Fall also calls themBergerie Salon. The urban farm is a real reception room, where you will welcome your guests. They may spend hours, looking at the animals, and talking about sheep. The walls of most farms are tiled, principally to protect them against urine damage, but tiled walls are also used to beautify the place.

Personally, I think another reason: farming the sheep near the consumer will reduce transport costs. Breed the sheep for the town in the town! This reason has not been taken into consideration in the article of Papa Demba Fall. Ecology was not an interesting topic in Africa 20 years ago when the article was written!

Urban Farming in Switzerland

Urban animal farming is almost no more existing Europe, due to hygienic laws forbidding to tight contacts between human and animals. But there is a long tradition of vegetable and flower community farming in the bigger towns of Switzerland since 1910. The community garden is divided into many parcels. The size of the parcel is usually between 2 and 4 acres. These small gardens provided the leaseholders with extra food (and revenues) during the first and the second world war. Now, the family gardens are well-organised as associations. The cultural aspect of the associations is rather important. Each farm typically consists of a small house, and farming land.

Family garden in Berne, Switzerland.

The Hype: Modern Urban Farming in Switzerland

YASAI is a startup company established in Zurich, Switzerland. The company specialised in vertical farming. The farm is cultivating herbs (spices) on an area of 585 m2, and has started its operations in January 2022. Its production capacity should reach 20 tons herbs each year!

The project is not totally focused on farming. According to co-founder and CEO Mark Essam Zahran, the company is committed to circularity and growing towards zero waste, and zero plastic, and zero food miles. The circularity consists of following key factors:

Excess heat Reuse
The excess heat produced by the equipment and the LED lightning can be redistributed to the neighbourhood.
Organic Waste Management
The company is producing biogas (energy) from the organic waste.
Wastewater Recuperation
The wastewater contents nutrients, e.g. phosphate that are mined. The company is working on a concept, how to extract the nutrients from the wastewater in order to reuse them.
Recovering Wasted Space
There are a lot of empty (unused) places, e.g. bunkers, where a vertical farm could be built. The company is looking for such places to rent for farming.
\(\mathbf{CO_2}\) Capturing
Carbon capture is the process of capturing carbon dioxide (CO2) before it enters the atmosphere, transporting it, and transform it, or storing it for centuries or millennia. Here, the carbone dioxide is boosting the growth of the herbs. The herbs will consume the carbon while releasing oxygen \(\mathbf{O_2}\) in the atmosphere.

Other Ecological Advantages

Near the Customer
20 Km away from the customers. Without vertical farming, herbs can not be produced in Switzerland, and need to be imported from Spain: 2000 km away from the customer.
Less Fresh Water
Vertical farming uses 95% less water than traditional farming.
More Yield
200 times more yield per square meter than traditional farming.
No Pesticides
The system does need any pesticides.

A Vertical Farm

The way the Plants are Growing

Floating Farm in Netherlands

Last but not least, I found an urban farm3 in the Netherlands. The farm has been built in 2019 in Rotterdam. The farm is floating on the water, making it compatible with climate change, particularly with sea level rise. Furthermore, the floating farm is in the city.

Cows enjoy perfect comfort in the floating farm: steel construction, rubber floor, solar system, milking robot, and more. An African visitor might only miss the tiles 😉

Floating farm in Rotterdam

Key Terms

\(\mathbf{CO_2}\)
Carbon dioxide (chemical formula \(\mathbf{CO_2}\)) is a chemical compound occurring as an acidic colorless gas with a density about 53% higher than that of dry air. Carbon dioxide molecules consist of a carbon atom double bonded to two oxygen atoms.
Floating Farm
The first floating dairy farm in the world located in the harbour of Rotterdam.
Nutrient
A nutrient is a substance used by an organism to survive, grow, and reproduce.
Parcel
A parcel is a piece of land bought and sold as a unit.
Salon
Reception room, living room.
Sea Level Rise
Tide gauge measurements show that the current global sea level rise began at the start of the 20th century. Between 1901 and 2018, the globally averaged sea level rose by 15–25 cm.
Tabaski
Local name given to the Eid al-Adha (Arabic: عيد الأضحى), the feast of the sacrifice. It honors the willingness of Ibrahim to sacrifice his son Ismail as an act of obedience to Allah's command.
Urban Farming
Urban agriculture, urban farming, or urban gardening is the practice of cultivating, processing, and distributing food in or around urban areas.
Vertical Farming
Vertical farming is the practice of growing crops in vertically stacked layers.

  1. Papa Demba Faal. Le "Mouton des Villes" ou l'Élevage Urbain à Dakar (Sénégal). Notes Africaines, No 202, Université Cheikh Anta Diop de Dakar, Institut fondamental d'Afrique noire, Mars 2002

  2. senediaspora.net Abou Kane Interview

  3. Floating Farm


Prof. Dr. Jacques E. Boillat is a retired professor for Computer Sciences. Jacques E. Boillat has been studying Mathematics, Theoretical Pysics, and Philosophy at the University of Berne, in Switzerland. He has been teaching at the University of Applied Sciences in Berne and at the University of the Gambia from 2006 to 2020. His wife Lenna Correa Boillat is owner of the Shepherd's Farm in Bato Kunku.


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