Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 423722
Title Residual soil phosphorus as the missing piece in the global phosphorus crisis puzzle
Author(s) Sattari, S.Z.; Bouwman, A.F.; Giller, K.E.; Ittersum, M.K. van
Source Proceedings of the National Academy of Sciences of the United States of America 109 (2012)16. - ISSN 0027-8424 - p. 6348 - 6353.
DOI https://doi.org/10.1073/pnas.1113675109
Department(s) Plant Production Systems
Earth System Science
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) dairy farming system - term crop response - fertilizer phosphorus - perspective - balances - nitrogen
Abstract Phosphorus (P) is a finite and dwindling resource. Debate focuses on current production and use of phosphate rock rather than on the amounts of P required in the future to feed the world. We applied a two-pool soil P model to reproduce historical continental crop P uptake as a function of P inputs from fertilizer and manure and to estimate P requirements for crop production in 2050. The key feature is the consideration of the role of residual soil P in crop production. Model simulations closely fit historical P uptake for all continents. Cumulative inputs of P fertilizer and manure for the period 1965–2007 in Europe (1,115 kg·ha-1 of cropland) grossly exceeded the cumulative P uptake by crops (360 kg·ha-1). Since the 1980s in much of Europe, P application rates have been reduced, and uptake continues to increase due to the supply of plant-available P from residual soil P pool. We estimate that between 2008 and 2050 a global cumulative P application of 700–790 kg·ha-1 of cropland (in total 1,070–1,200 teragrams P) is required to achieve crop production according to the various Millennium Ecosystem Assessment scenarios [Alcamo J, Van Vuuren D, Cramer W (2006) Ecosystems and Human Well-Being: Scenarios, Vol 2, pp 279–354]. We estimate that average global P fertilizer use must change from the current 17.8 to 16.8–20.8 teragrams per year in 2050, which is up to 50% less than other estimates in the literature that ignore the role of residual soil P.
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