Journal
SOIL BIOLOGY & BIOCHEMISTRY
Volume 59, Issue -, Pages 86-88Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2013.01.005
Keywords
Organic nitrogen; Soil amino acids; Nitrogen; Grasslands
Categories
Funding
- NSF EPSCoR grant
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Classic methods of soil amino acid (SAA) determination involve field collection of soils and disturbance during storage, sieving, mixing and extraction in the laboratory. We describe a novel inexpensive method for extraction of SAA's in situ with minimal soil disturbance. In a comparison between methods of SAA extraction from a semiarid grassland site, glu-x and arginine were the dominant SAA nitrogen sources detected by the novel method while serine and glycine were the dominant SAA nitrogen sources detected using the classic method. The extraction method employed is likely to be useful for accurate determination of SAA availability to plants and soil microbes. (C) 2013 Elsevier Ltd. All rights reserved.
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