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Sulfuric Acid as an Amendment for Reclaiming Soils High in Boron
Author(s) -
Prather R. J.
Publication year - 1977
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1977.03615995004100060016x
Subject(s) - sulfuric acid , amendment , leaching (pedology) , soil water , adsorption , boron , chemistry , environmental chemistry , desorption , soil science , environmental science , inorganic chemistry , organic chemistry , political science , law
Laboratory results indicated that sulfuric acid can effectively aid in reclaiming soils high in boron. Results of a study, using 80‐cm columns of a soil high in B, indicated that a surface application of 3.22 metric tons/ha of concentrated (96%) H 2 SO 4 followed by leaching with 3 pore volumes, p.v. of water was nearly as effective in reducing the level of water‐soluble soil B as was leaching with 16 p.v. of water. A direct pH effect on B adsorption affinity can explain the enhanced reclamation effect at the soil surface but cannot account for the beneficial effect found at lower soil column depths. Data suggested that competition by silicate ion for adsorption sites may be contributing to the enhanced desorption of B at lower soil depths.