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The widespread recycling of animal wastes as fertilizers can severely affect the phosphorus cycle, especially in soils that undergo periodical flooding and anaerobiosis. The aim of this study was to investigate the effect that reducing conditions have on the release and forms of P in soils that have received different doses (0, 60 and 120 Mg/ha) of liquid hog manure for 15 years. Samples of the topsoil...
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