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Published online 25 May 2007
Published in J Environ Qual 36:1086-1095 (2007)
DOI: 10.2134/jeq2006.0549
© 2007 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Comparison of Phosphorus Forms in Wet and Dried Animal Manures by Solution Phosphorus-31 Nuclear Magnetic Resonance Spectroscopy and Enzymatic Hydrolysis

Zhongqi Hea,*, Barbara J. Cade-Menunb, Gurpal S. Toorc, Ann-Marie Fortunaa, C. Wayne Honeycutta and J. Thomas Simsd

a USDA-ARS, New England Plant, Soil, and Water Lab., Orono, ME 04469
b Geological and Environmental Sciences, Stanford Univ., Stanford, CA 94305
c Biological and Agricultural Engineering, Univ. of Arkansas, Fayetteville, AR 72701
d Dep. of Plant and Soil Sciences, Univ. of Delaware, Newark, DE 19716


Figure 1
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  		Fig. 1. Solution 31P NMR spectra of wet and dry dairy manure extracted with NaOH-EDTA, and wet and dry poultry manure extracted with NaOH-EDTA and HCl. Spectra are plotted with 7 Hz line broadening. Inserts, plotted with 1 Hz line broadening, show the expanded orthophosphate monoester region. The arrow indicates the diagnostic C2 peak for phytate, which was multiplied by 6 to determine total phytate concentration (Turner, 2004).

 

Figure 2
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  		Fig. 2. Effect of drying on P forms in dairy and poultry manures.

 

Figure 3
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  		Fig. 3. Comparison of phosphorus forms in NaOH-EDTA extracts identified by enzymatic hydrolysis and solution 31P NMR analysis. Values followed by different letters within each manure treatment are significantly different at P < 0.05

 




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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 2007 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.