Ninhydrin-reactive nitrogen measurements
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R.G. Joergensen; P.C. Brookes
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Article
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1990
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Elsevier Science
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English
β 528 KB
Amato and Ladd showed that the amount of ninhydrin-reactive nitrogen (ninhydrin-N) extracted from soil by 2 M KCI following CHCI, fumigation is a reliable and sensitive indicator of the amount of soil microbial biomass. However, when we attempted the assay in 0.5 M K,SO, soil extracts, serious analy