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Understanding phosphorus in soils is vital to proper management
Date:2/4/2009

ltry manure. Phytate-P is generally considered to be recalcitrant in the agroecosystem because of its chemical structure. However, the lack of phytate-P accumulation in several soils receiving poultry manure in this study indicates that manure-derived phytate-P may not be biologically and environmentally benign.

Zhengxia Dou, the lead author, stated "in terms of potential P loss in the long run, organic materials containing large amounts of phytate-P such as poultry manure may not differ from other material containing mainly inorganic P". Andrew Sharpley, a collaborating scientist, further explained "when the soils' P sorption capacity was nearly saturated after years of manure application, phytate or other organic P forms could be exposed to breakdown and potential loss". Therefore, it is important to strive towards balancing P inputs with outputs and to prevent P from building up in soils to which manure is applied.


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Contact: Sara Uttech
suttech@soils.org
608-268-4948
Soil Science Society of America
Source:Eurekalert

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