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Interview: Prof. Asseng discusses vertical farming as an innovative concept for agricultural crop production


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“Vertical farming will play a role in future food production”

Interview: Prof. Asseng discusses vertical farming as an innovative concept for agricultural crop production

Alternative production systems to provide the growing global population with healthy, nutritious and sustainably produced foodstuffs are currently gaining considerable attention. In this interview, Senthold Asseng, Professor of Digital Agriculture at the Technical University of Munich (TUM), discusses the concept of vertical farming, which will allow agriculture of the future to take place under fully controlled and automated conditions.

Professor Asseng, vertical farming allows food production to be fully uncoupled from soil and external climate influences. What possibilities and opportunities do you see in such indoor crop growing systems?

Crops are grown in spaces ranging in size from small boxes that can be placed in homes or offices to industrial production facilities with several thousand square meters of growing area. Vertical farming has the potential to grow up to 100 layers of crops above one another on one hectare of land. This will conserve large areas of agricultural land.

That sounds revolutionary. What other benefits would this crop production method offer?

Vertical farming allows multiple harvests of a cropper year and can make a substantial contribution to global food security. If we optimize the growing conditions for a crop in a closed system, cut off from the outside world, we can reduce water requirements by up to 90 percent and eliminate the need for chemical crop protection.

Yields can be increased by many times through optimal crop care and growth conditions. This includes intensive use of technologies, for example through fully automated management of crops as well as lighting and irrigation systems. This will help to minimize operational expenses.

Where do you see the obstacles and challenges?

Vertical farming has so far proven highly energy-intensive. This has made it unprofitable currently for crops such as grains, although it would be quite conceivable to increase the global mean annual per-hectare wheat yield by a factor of 6000.

I see also a major potential for the production of pharmaceutical and protein crops. Quality, nutrient content and flavors can be precisely controlled in vertical farming. New crop varieties specifically bred for this type of farming offer promising improvements in terms of quality. However, one point must be clear: the production of crops in vertical farms has to be cost-effective.

Where do you see the biggest need for research?

There are still many areas where a lot of research is needed. For example, what factors limit crop growth in vertical farming? Another issue is the conservation and efficient use of energy. If we can answer these questions, we can for exaple reduce the energy use in such indoor facilities towards making them profitable.

So far, vertical farming has been used to grow vegetables. Will this indoor method replace production on conventional crop land one day?

The success of vertical farming will depend on whether the products can capture a market share. Acceptance on part of consumers will also play an important role. People may take some convincing. That will be possible only through transparency and respect. We also need farmers who are willing to try vertical farming. Farmers have the know-how to grow crops and have extensive knowledge of cropping systems. We should therefore involve them in the development of vertical farming technologies.

I see a big opportunity for vertical farming for the production of healthy and sustainable food. However, I think it will never entirely replace conventional farming in fields. But vertical farming can and will play an essential role in food production in the future.


Asseng S. et al. (2021). Implications of new technologies for future food supply systems. In: The Journal of Agricultural Science 159, 315-319.

Asseng S. et al. (2020). Wheat yield potential in controlled-environment vertical farms. In: PNAS 117 (32) 19131-19135.

More information:

Prof. Senthold Asseng is the director of the World Agricultural Systems Center - Hans Eisenmann Forum (HEF) for Agricultural Sciences, a central institution of TUM.

“Vertical Farming – all under one roof” was the title of an event hosted by the World Agricultural Systems Center - Hans Eisenmann Forum (HEF) for Agricultural Sciences in conjunction with the Competency Network Digital Agriculture Bayern, TUM FACIT and the TUM Venture Labs in March 2022. Further information:

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Prof. Senthold Asseng

Technical University of Munich (TUM)

Director of the World Agricultural Systems Center

Hans Eisenmann Forum for Agricultural Sciences

Professorship of Digital Agriculture

Liesel-Beckmann-Str. 2

85354 Freising

Phone: 08161 71 - 3464

The Technical University of Munich (TUM) is one of Europe’s leading research universities, with more than 600 professors, 48,000 students, and 11,000 academic and non-academic staff. Its focus areas are the engineering sciences, natural sciences, life sciences and medicine, combined with economic and social sciences. TUM acts as an entrepreneurial university that promotes talents and creates value for society. In that it profits from having strong partners in science and industry. It is represented worldwide with the TUM Asia campus in Singapore as well as offices in Beijing, Brussels, Mumbai, San Francisco, and São Paulo. Nobel Prize winners and inventors such as Rudolf Diesel, Carl von Linde, and Rudolf Mößbauer have done research at TUM. In 2006, 2012, and 2019 it won recognition as a German "Excellence University." In international rankings, TUM regularly places among the best universities in Germany.

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