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The Hidden Costs of Land Degradation in US Maize Agriculture

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Title
The Hidden Costs of Land Degradation in US Maize Agriculture
Author
Jang, W. S.Neff, J. C.Im, YoungbinDoro, L.Herrick, J. E.
Issue Date
2021-02
Publisher
AMER GEOPHYSICAL UNION
Citation
EARTHS FUTURE, v.9, no.2, pp.e2020EF001
Abstract
The United States is a world leader in the production of maize and other crops and the agricultural success of the country is directly linked to the intensive use of fertilizers and irrigation. However, even in advanced agricultural systems, soils can become degraded over time due to factors such as soil organic matter (SOM) loss and erosion. Here, we use a series of scenario-based model analyses to show that about one-third of current annual US. N fertilizer use in maize agriculture is used to compensate for the long-term loss of soil fertility through erosion and organic matter loss. This leads to over a half billion dollars per year in extra fertilizer supply costs to US farmers. These results highlight the potential to reduce both the input costs and environmental impacts of agriculture through the restoration of SOM in agricultural soils.
URI
https://scholarworks.unist.ac.kr/handle/201301/52640
URL
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020EF001641
DOI
10.1029/2020EF001641
ISSN
2328-4277
Appears in Collections:
CSE_Journal Papers
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