Efficiency of phosphorus resource use in Africa as defined by soil chemistry and the impact on crop production

Magnone, Daniel and Bouwman, Alexander F. and van der Zee, Sjoerd E.A.T.M. and Sattari, Sheida Z. and Beusen, Arthur H. W. and Niasar, Vahid J. (2017) Efficiency of phosphorus resource use in Africa as defined by soil chemistry and the impact on crop production. Energy Procedia, 123 . pp. 97-104. ISSN 1876-6102

Full content URL: http://dx.doi.org/10.1016/j.egypro.2017.07.264

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By 2050 the global population will be 9.7 billion, placing an unprecedented burden on the world’s soils to produce extremely high food yields. Phosphorus (P) is crucial to plant growth and mineral fertilizer is added to soil to maintain P concentrations, however this is a finite resource, thus efficient use is critical. Plants primarily uptake P from a labile (available) P pool and not from the stable solid phase; transfer between these pools limits bioavailability. Transfer is controlled by soil properties which vary between soil types. The dynamic phosphorus pool simulator (DPPS) quantifies crop production and soil P relationships by utilising the transfer. This approach effectively models crop uptake from soil inputs, but it does not quantify the efficiency use. This study incorporates geochemical techniques within DPPS to quantify the efficiency of fertilizer-P use based on soil chemistry.

Additional Information:This research was funded by an EPSRC Global Challenges Research Grant (EP/111676) awarded to VN 1st International Conference on Sustainable Energy and Resource Use in Food Chains, ICSEF 2017, 19-20 April 2017, Berkshire, UK
Keywords:Phosphorus, DPPS, Soil, Africa
Subjects:F Physical Sciences > F870 Soil Science
F Physical Sciences > F670 Geochemistry
F Physical Sciences > F810 Environmental Geography
F Physical Sciences > F140 Environmental Chemistry
G Mathematical and Computer Sciences > G150 Mathematical Modelling
Divisions:College of Science > School of Geography
ID Code:28806
Deposited On:27 Sep 2017 19:08

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