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The Determination of the Readily Available Phosphorus of Soils 1
Author(s) -
Truog Emil
Publication year - 1930
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1930.00021962002200100008x
Subject(s) - citation , library science , phosphorus , soil water , permission , mathematics , operations research , computer science , chemistry , political science , law , environmental science , soil science , organic chemistry
(3), and Shedd (6). The N/5 nitric acid method, developed in this country largely by Peter and Averitt (4), by Stoddart (7), and by Fraps (2), and ~% citric acid method, developed in England by Dyer (~), have probably been the most successful of the methods proposed. Until recently, investigators have been handicapped in working on this problem by a lack of. a satisfactory method for determining small amounts of phosphorus quick, ly and accurately. The development of the Denig~ colorimetrie method for phosphorus in recent years has entirely eliminated this handicap. The perfected method is, undoubtedly, one of the most satisfactory colorirnetric methods in existence. For a detailed discussion of this method the reader is referred to the paper by Truog and Meyer (8).