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Effect Of Drying On Phosphorus Distribution In Poultry Manure, Heidi W. Dail, Zhongqi He, M. Susan Erich, C. Wayne Honeycutt
Effect Of Drying On Phosphorus Distribution In Poultry Manure, Heidi W. Dail, Zhongqi He, M. Susan Erich, C. Wayne Honeycutt
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Laboratory drying may alter manure phosphorus (P) distribution. The effects of freeze, air (22 °C), and oven (65 °C) drying on sequentially fractioned poultry manure P were examined. Higher drying temperatures resulted in lower percentage of dry matter. Increased H2O- and decreased sodium bicarbonate (NaHCO3)-extractable P with drying provided evidence that drying increases poultry manure P solubility. Labile fractions were predominantly inorganic P (Pi), whereas sodium hydroxide (NaOH) and hydrochloric acid (HCl) fractions had significant amounts of organic P (Po). Drying altered H2O- and NaHCO3-extractable Pi but …