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Tracking phosphorus runoff from livestock manure
Date:6/13/2010

ductions were comparable to using other chemical treatments such as alum and lime, widespread use of rare earth elements in this manner would likely be cost prohibitive.

According to the authors of the study, the real potential benefit of rare earth elements lies in their ability to label phosphorus in livestock manures, a boon for researchers. Their rainfall simulation experiment clearly showed that rare earth elements precipitated greater than 50% of the dissolved phosphorus in runoff. The results revealed that rare earth elements can be used to track the fate of phosphorus and other manure constituents from soils treated with manures.

This study introduces rare earth elements as a potentially valuable new tool for research in agricultural phosphorus management. Extending this technique to field, landscape, and small watershed scales will contribute to testing and validating phosphorus management strategies, including critical source area management. Agriculture, particularly the dairy, poultry and swine industries, stand to benefit from improved nutrient containment of their manure-treated soils.


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Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

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