Comparison of Conventional and Automated Procedures for Nitrogen, Phosphorus, and Potassium Analysis of Plant Material Using a Single Digestion<sup>1</sup>

L. Thomas, R.; W. Sheard, R.; R. Moyer, J.

doi:10.2134/agronj1967.00021962005900030010x

Public

Comparison of Conventional and Automated Procedures for Nitrogen, Phosphorus, and Potassium Analysis of Plant Material Using a Single Digestion1

Published in Agronomy Journal • May 1, 1967

Authors:

R. L. Thomas

R. W. Sheard

J. R. Moyer

Abstract

Abstract Nitrogen content in 10 plant samples of widely varying concentrations of N, P, and K was measured by a H 2 SO 4 —H 2 O 2 ashing procedure and the AutoAnalyzer system and found comparable to nitrogen content obtained by conventional Kjeldahl analysis. Phosphorus content measured by the AutoA...

Subject

Ashing

AutoAnalyzer

Kjeldahl method

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