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1964•Journal of AOAC INTERNATIONALRequires access

Analysis of Nitrogen in Fertilizers

H A Davis

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Abstract

Abstract A survey of fertilizer commercial laboratories and regulatory laboratories showed that the salicylic acid method, 2.037, is still being widely used on liquid fertilizers; that many users of the reduced iron method are modifying it; and that very little use is being made of nitrogen activity methods 2.048— 2.051. It is recommended that the nitrogen activity methods be deleted from the 10th edition of Official Methods of Analysis and cited by reference only, and that attempts be made to develop one generally applicable method for nitrogen in fertilizers.

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What this paper is about

Abstract A survey of fertilizer commercial laboratories and regulatory laboratories showed that the salicylic acid method, 2.037, is still being widely used on liquid fertilizers; that many users of the reduced iron method are modifying it; and that very little use is being made of nitrogen activity methods 2.048— 2.051. It is recommended that the nitrogen activity methods be deleted from the 10th edition of Official Methods of Analysis and cited by reference only, and that attempts be made to develop one generally applicable method for nitrogen in fertilizers.

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Available abstract

Abstract A survey of fertilizer commercial laboratories and regulatory laboratories showed that the salicylic acid method, 2.037, is still being widely used on liquid fertilizers; that many users of the reduced iron method are modifying it; and that very little use is being made of nitrogen activity methods 2.048— 2.051. It is recommended that the nitrogen activity methods be deleted from the 10th edition of Official Methods of Analysis and cited by reference only, and that attempts be made to develop one generally applicable method for nitrogen in fertilizers.

Key concepts: Nitrogen, Salicylic acid, Fertilizer, Chemistry, Nitrogen fertilizer, Environmental science, Environmental chemistry, Biochemistry

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