References
- Ajiboye , B. , Akinremi , O. O. and Racz , G. J. 2004 . Laboratory characterization of phosphorus in fresh and oven‐dried organic amendments . Journal of Environmental Quality , 33 : 1062 – 1069 .
- Akinremi , O. O. , Armisen , N. , Kashem , M. A. and Janzen , H. H. 2003 . Evaluation of analytical methods for total phosphorus in organic amendments . Communications in Soil Science and Plant Analysis , 34 : 2981 – 2991 .
- Chapuis‐Lardy , L. , Fiorini , J. , Toth , J. D. and Dou , Z. 2004 . Phosphorus concentration and solubility in dairy feces: Variability and affecting factors . Journal of Dairy Science , 87 : 4334 – 4341 .
- Cross , A. F. and Schlesinger , W. H. 1995 . A literature review and evaluation of the Hedley fractionation: Applications to the biogeochemical cycle of soil phosphorus in natural ecosystems . Geoderma , 64 : 197 – 214 .
- Dick , W. A. and Tabatabai , M. A. 1977 . Determination of orthophosphate in aqueous solutions containing labile organic and inorganic phosphorus compounds . Journal of Environmental Quality , 6 : 82 – 85 .
- Dou , Z. , Toth , J. D. , Galligan , D. T. , Ramberg , C. F. Jr. and Ferguson , J. D. 2000 . Laboratory procedures for characterizing manure phosphorus . Journal of Environmental Quality , 29 : 508 – 514 .
- Elias-Azar , K. , Laag , A. E. and Pratt , P. F. 1980 . Bicarbonate–extractable phosphorus in fresh and composted dairy manures . Soil Science Society of America Journal , 44 : 435 – 443 .
- Gerritse , R. G. and Eksteen , R. 1978 . Dissolved organic and inorganic phosphorus compounds in pig slurry: Effect of drying . Journal of Agricultural Science, Cambridge , 90 : 39 – 45 .
- Griffin , T. S. , Honeycutt , C. W. and He , Z. 2003 . Changes in soil phosphorus from manure application . Soil Science Society of America Journal , 67 : 645 – 643 .
- He , Z. , Fortuna , A. , Senwo , Z. N. , Tazisong , I. A. , Honeycutt , C. W. and Griffin , T. S. 2006b . Hydrochloric fractions in Hedley fractionation may contain inorganic and organic phosphates . Soil Science Society of America Journal , 70 : 893 – 899 .
- He , Z. and Honeycutt , C. W. 2005 . A modified molybdate blue method for orthophosphate determination suitable for investigating enzymatic hydrolysis of organic phosphates . Communications in Soil Science and Plant Analysis , 36 : 1373 – 1383 .
- He , Z. , Griffin , T. S. and Honeycutt , C. W. 2004a . Enzymatic hydrolysis of organic phosphorus in swine manure and soils . Journal of Environmental Quality , 33 : 367 – 372 .
- He , Z. , Griffin , T. S. and Honeycutt , C. W. 2004b . Phosphorus distribution in dairy manures . Journal of Environmental Quality , 33 : 1528 – 1534 .
- He , Z. , Senwo , Z. N. , Mankolo , R. N. and Honeycutt , C. W. 2006a . Phosphorus fractions in poultry litter characterized by sequential fractionation coupled with phosphatase hydrolysis . Journal of Food, Agriculture and Environment , 4 : 304 – 312 .
- Hedley , M. J. , Stewart , J. W.B. and Chauhan , B. S. 1982 . Changes in inorganic and organic soil phosphorus fractions induced by cultivation practices and by laboratory incubations . Soil Science Society of America Journal , 46 : 970 – 976 .
- Kleinman , P. J.A. , Sharpley , A. N. , Wolf , A. M. , Beegle , D. B. and Moore , P. A. Jr. 2002 . Measuring water‐extractable phosphorus in manure as an indicator of phosphorus in runoff . Soil Science Society of America Journal , 66 : 2009 – 2015 .
- Kleinman , P. J.A. , Wolf , A. M. , Sharpley , A. N. , Beegle , D. B. and Saporito , L. S. 2005 . Survey of water‐extractable phosphorus in livestock manures . Soil Science Society of America Journal , 69 : 701 – 708 .
- Leinweber , P. , Haumaier , L. and Zech , W. 1997 . Sequential extractions and 31P‐NMR spectroscopy of phosphorus forms in animal manures, whole soils and particle‐size separates from a densely populated livestock area in northwest Germany . Biology and Fertility of Soils , 25 : 89 – 94 .
- McDowell , R. W. and Stewart , I. 2005 . Phosphorus in fresh and dry dung of grazing dairy cattle, deer, and sheep: Sequential fraction and phosphorus‐31 nuclear magnetic resonance analyses . Journal of Environmental Quality , 34 : 598 – 607 .
- Murphy , J. and Riley , J. P. 1962 . A modified single solution method for the determination of phosphate in natural waters . Analytica Chimica Acta , 27 : 31 – 36 .
- SAS Institute . 1999 . SAS Procedures Guide, Version 7 Cary, N.C : SAS Institute .
- Schlichting , A. and Leinweber , P. 2002 . Effects of pretreatment on sequentially extracted phosphorus fractions from peat soils . Communications in Soil Science and Plant Analysis , 33 : 1617 – 1627 .
- Scholl , D. W. , Bolton , A. J. , Clennell , M. B. and Spence , G. D. 1997 . Comparison of Shipboard Porosity Values using Oven- and Freeze-Drying Techniques: Site 1039, 1040, and 1043 540 – 550 . College State, Tex. : Ocean Drilling Program .
- Sharpley , A. N. and Moyer , B. 2000 . Phosphorus forms in manure and compost and their release during simulated rainfall . Journal of Environmental Quality , 29 : 1462 – 1469 .
- Sistani , K. R. , Miles , D. M. , Rowe , D. E. , Brink , G. E. and McGowen , S. L. 2001 . Impact of drying method, dietary phosphorus levels, and methodology on phosphorus chemistry of broiler manure . Communications in Soil Science and Plant Analysis , 32 : 2783 – 2793 .
- Twinch , A. J. 1987 . Phosphate exchange characteristics of wet and dried sediment samples from a hypertrophic reservoir: Implications for the measurements of sediment phosphorus status . Water Resources , 21 : 1225 – 1230 .
- Wolf , A. M. , Kleinman , P. J.A. , Sharpley , A. N. and Beegle , D.B. 2005 . Development of a water–extractable phosphorus test for manure: An interlaboratory study . Soil Science Society of America Journal , 69 : 695 – 700 .