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von Braun J, Afsana K, Fresco LO, et al., editors. Science and Innovations for Food Systems Transformation [Internet]. Cham (CH): Springer; 2023. doi: 10.1007/978-3-031-15703-5_19

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Science and Innovations for Food Systems Transformation [Internet].

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A world map represents annual nitrogen surplus between 0 to 100, and cropland is less than one percent and the line graph represents global cropland versus year and contains three curves cropland N output, input, and surplus, highest peak value is cropland N input.

Fig. 1

Global trends in crop nitrogen output, input from fertilizer and other sources, and annual nitrogen surplus (left), and a map of nitrogen surplus or deficit in 2015 (top, kg N/ha). N surplus is defined as the total N input to cropland minus N harvested as crop products (Zhang et al. 2015); it is expressed as million tons (Mt) in the left panel, and as kg per hector land area in the top panel, indicating the potential pressure due to N lost from crop production. (Source: Xin Zhang and Guolin Yao, University of Maryland Center for Environmental Science)

From: A New Paradigm for Plant Nutrition

Copyright 2023, The Author(s)

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