{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T17:36:57Z","timestamp":1790617017376,"version":"4.1.0"},"reference-count":42,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2007,7,1]],"date-time":"2007-07-01T00:00:00Z","timestamp":1183248000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["acsess.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Env Quality"],"published-print":{"date-parts":[[2007,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Both enzymatic hydrolysis and solution <jats:sup>31<\/jats:sup>P nuclear magnetic resonance (NMR) spectroscopy have been used to characterize P compounds in animal manures. In this study, we comparatively investigated P forms in 0.25 <jats:italic>M<\/jats:italic> NaOH\/0.05 <jats:italic>M<\/jats:italic> EDTA extracts of dairy and poultry manures by the two methods. For the dairy manure, enzymatic hydrolysis revealed that the majority of extracted P was inorganic P (56%), with 10% phytate\u2010like P, 9% simple monoester P, 6% polynucleotide\u2010like P, and 18% non\u2010hydrolyzable P. Similar results were obtained by NMR spectroscopy, which showed that inorganic P was the major P fraction (64\u201373%), followed by 6% phytic acid, 14 to 22% other monoesters, and 7% phosphodiesters. In the poultry manure, enzymatic hydrolysis showed that inorganic P was the largest fraction (71%), followed by 15% phytate\u2010like P and 1% other monoesters, and 3% polynucleotide\u2010like P. NMR spectroscopy revealed that orthophosphate was 51 to 63% of extracted P, phytic acid 24 to 33%, other phosphomonoesters 6 to 12%, and phospholipids and DNA 2% each. Drying process increased orthophosphate (8.4% of total P) in dairy manure, but decreased orthophosphate (13.3% of total P) in poultry manure, suggesting that drying treatment caused the hydrolysis of some organic P to orthophosphate in dairy manure, but less recovery of orthophosphate in poultry manure. Comparison of these data indicates that the distribution patterns of major P forms in animal manure determined by the two methods were similar. Researchers can utilize the method that best fits their specific research goals or use both methods to obtain a full spectrum of manure P characterization.<\/jats:p>","DOI":"10.2134\/jeq2006.0549","type":"journal-article","created":{"date-parts":[[2007,5,25]],"date-time":"2007-05-25T21:19:36Z","timestamp":1180127976000},"page":"1086-1095","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":77,"title":["Comparison of Phosphorus Forms in Wet and Dried Animal Manures by Solution Phosphorus\u201031 Nuclear Magnetic Resonance Spectroscopy and Enzymatic Hydrolysis"],"prefix":"10.1002","volume":"36","author":[{"given":"Zhongqi","family":"He","sequence":"first","affiliation":[{"name":"USDA\u2010ARS New England Plant, Soil, and Water Lab. Orono ME 04469"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbara J.","family":"Cade\u2010Menun","sequence":"additional","affiliation":[{"name":"Geological and Environmental Sciences Stanford Univ. Stanford CA 94305"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gurpal S.","family":"Toor","sequence":"additional","affiliation":[{"name":"Biological and Agricultural Engineering Univ. of Arkansas Fayetteville AR 72701"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ann\u2010Marie","family":"Fortuna","sequence":"additional","affiliation":[{"name":"USDA\u2010ARS New England Plant, Soil, and Water Lab. Orono ME 04469"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C. Wayne","family":"Honeycutt","sequence":"additional","affiliation":[{"name":"USDA\u2010ARS New England Plant, Soil, and Water Lab. Orono ME 04469"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. Thomas","family":"Sims","sequence":"additional","affiliation":[{"name":"Dep. of Plant and Soil Sciences Univ. of Delaware Newark DE 19716"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2007,7]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.2134\/jeq2004.1062"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1079\/9780851998220.0021"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.2134\/jeq2002.4570"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/00010694-199611000-00006"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2389.1985.tb00324.x"},{"key":"e_1_2_6_7_1","first-page":"87","volume-title":"Phosphorus, agriculture, and the environment. Monogr. 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