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Modifications of Plant Growth and Ash Content as Effected by Acids Added to Soils 1
Author(s) -
Carr R. H.,
Havercamp H. G.
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/agronj1924.00021962001600040005x
Subject(s) - chemist , carr , citation , swift , chemistry , library science , mathematics , computer science , biology , organic chemistry , ecology , programming language
That there is a distinction between acid soils and toxic soils has been noted by many soil investigators, but the conditions of acidity which develop unfavorable and toxic, or acid, soils are not well defined or understood. The term toxic is usually applied in a broad way to any soil that is unfavorable to plant growth; whereas acid, in its chemical meaning, refers to free hydrogen ions, or more generally to the result of this ionic activity in producing compounds of the acids that are harmful to the growth of plants. Thus, aluminum acetate and sulfate are the results of the activity of acids in soils, or acid toxicity, whereas the presence of such compounds as cumarin, or dihyroxystearic acid, etc., cause the soils to be often referred to under the general head of toxic or organic toxicity. The effects of organic