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Availability of the Phosphorus of Floats as Influenced by Incorporation of Farm Manure in the Soil 1
Author(s) -
Lyon T. L.,
Buckman H. C.
Publication year - 1924
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/agronj1924.00021962001600020004x
Subject(s) - citation , manure , phosphorus , mathematics , agronomy , agricultural science , library science , environmental science , computer science , biology , chemistry , organic chemistry
It has frequently been stated that the decomposition of organic matter in contact with raw rock phosphate increases the solubility of this material and makes its phosphorus more readily available to growing plants. Experiments in which the degree of availability was measured by chemical means, when phosphate rock was applied to soil, have not usually indicated that increased solubility resulted from the application of organic matter. When availability has been measured by crop growth, the returns have been more favorable to the theory that decomposing organic matter increases the availability floats. The literature of the subject as been so comprehensively reviewed by Waggaman, Wagner, and Gardiner (i) that it is unnecessary to discuss here the results of preceding investigations. We ventured to add another experiment to the very considerable number dealing with this subject because more evidence appeared to be needed and in the hope that it might be. possible to supply some that would be relatively low in experimental error. With the latter purpose in view, careful attention was given to the technique and the final data were all subjected to mathematical tests of their significance.