4.7 Article

Hydroponic potato production in wood fiber for food security

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NPJ SCIENCE OF FOOD
卷 7, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s41538-023-00200-7

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This study introduces an alternative hydroponic potato growing system using bare wood fiber as a growing medium. Implementation of the system resulted in a 300% higher tuber production compared to conventional farming. The mineral composition of the tubers obtained from the hydroponic system was similar to those grown in the field, indicating potential for biofortification. The recyclability, reusability, and simplicity of this solution hold promise for improving food security in selected areas and urban agriculture.
The resilience of global food security is a critical concern. Facing limited access to land and potential disruption of the food markets, alternative, scalable, and efficient production systems are needed as a complementary buffer for maintenance of food production integrity. The purpose of this study was to introduce an alternative hydroponic potato growing system where potatoes are grown in bare wood fiber as a growing medium. A system utilizing drip irrigation and plastic bags as containers was tested for three different types of wood fiber, two cultivars and two fertigation strategies. Implementation of the system resulted in similar to 300% higher tuber production when compared to the local conventional farming. Mineral composition of the tubers obtained from hydroponic system was similar to the composition of tubers grown in the field and revealed potential for biofortification. In addition, a fertigation strategy where the two application points were separated across the root zone resulted in tubers with dry matter content comparable to the potatoes grown in soil. The recyclability, reusability, and simplicity of this solution may encourage its application for improving security of food production in selected areas of the world as well as its utilization in urban agriculture.

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