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USEPA (1986) Method 3051. Microwave assisted acid digestion of sediments, sludges and soils. In: Test Methods for Evaluating Solid Waste. Volume 1A, 3rd Edition, National Technical Information Service, Springfield.

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• TITLE: Analysis and comparison of nutrient contents in different animal manures from Beijing suburbs

  AUTHORS: Zengling Yang, Lujia Ha

  KEYWORDS: Animal Manures; Nutrient Content; Analysis; Comparison; Distribution

  JOURNAL NAME: Agricultural Sciences, Vol.4 No.12A, December 25, 2013

  ABSTRACT: Manure samples were collected by floor scrapings in animal stables from Beijing suburbs. Total nitrogen (TN), total phosphorus (TP), and total potassium (TK) were analyzed by conventional wet chemical methods. All manures showed a high variability in nutrient contents. Nutrients contents in different animal manures were significantly different. TN and TK contents in layer manures were higher than swine and dairy manures (p