News » Phosphorus runoff research

03.06.2018

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The American Societies of Agrology, Soil and Crop Science have published a special issue of papers on phosphorussite assessment, that is phosphorus losses and runoff from fields andcatchments. Twenty papers look at theory and practice of tools to modeland assess phosphorus loss vulnerability and to forecast phosphoruslosses, in particular looking at phosphorus soil indices (e.g. APEX,APLE, TBET). Conclusions are that concerns remain about accuracy ofphosphorus indices (which need to be locally adapted) and aboutreliability of loss assessment tools, showing a need for more data andwork to improve accuracy of models. Overall, phosphorus indices andphosphorus loads (inputs to fields) provide good indicators of risk ofphosphorus losses. Two of the papers concerned manure application,concluding that phosphorus losses are dependent on specific fieldcharacteristics and on precipitation, but that losses are generallylower for spring application compared to autumn or winter application.

Journal of Environmental Quality, vol.46, issue 6, Nov.-Dec. 2017, Special Section: the evolving science ofphosphorus site assessment: dl.sciencesocieties.org/publications/jeq/tocs/46/6#h2-SPECIAL%20SECTION:%20THE%20EVOLVING%20SCIENCE%20OF%20PHOSPHORUS%20SITE%20ASSESSMENT

Source: European Sustainable Phosphorus Platform (ESPP) eNews no 22 about nutrient recycling & stewardship

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