The sun is for free

Rob Baan

by Rob Baan, Koppert Cress

Microgreen Grower Rob Baan uses the title Metropolitan Farmer. As best Farmer 2020 of the Netherlands he promotes fresh produce as health benefit. From his Sustainable All Electric Greenhouses he supplies 70.000 restaurants in the major European metropole in a circle of 800 km around his farm.

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Plant Nutrients and Food Quality in Vertical Farming

Kristian Holst Laursen

by Kristian Holst Laursen, University of Copenhagen, Department of Plant and Environmental Sciences

In vertical farming, plants are often grown hydroponically or aeroponically under rigidly controlled conditions. This allows for complete control of plant nutrient supply and potentially delivers optimal plant growth, harvest yield and food quality. It is, however, vital that fertilization strategies are carefully designed to match plant demands of all 14 essential plant nutrients throughout the whole growth period. This does represent a major challenge when nutrient solutions are recirculated – not least in systems relying on organic fertilizers.

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