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Is fertilization efficiency misleading?

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  • Sasha D. Hafner

    (State University of New York, College of Environmental Science and Forestry)

Abstract

Given the need to increase crop production in the future while minimizing any associated impact on the environment, it is important to understand the relationship between global crop production and fertilization. Tilman et al.1 argue that fertilization beyond current levels is unlikely to increase crop yields (production per unit area) as effectively as in the past, due to diminishing returns. However, their evidence is misleading and does not support their conclusions. Diminishing returns are not readily apparent on a global scale.

Suggested Citation

  • Sasha D. Hafner, 2003. "Is fertilization efficiency misleading?," Nature, Nature, vol. 422(6930), pages 397-398, March.
    • Handle: RePEc:nat:nature:v:422:y:2003:i:6930:d:10.1038_422397a
    DOI: 10.1038/422397a
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