Premium
Acidulation of Phosphate Rock in Soil
Author(s) -
Terman G. L.,
Moreno E. C.,
Osborn Glen
Publication year - 1964
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/sssaj1964.03615995002800010044x
Subject(s) - phosphorite , loam , sulfur , chemistry , phosphate , agronomy , nuclear chemistry , soil water , environmental science , soil science , organic chemistry , biology
Abstract Sulfur, H 2 SO 4 , H‐resin, and 20% superphosphate were compared as acidulants for phosphate rock (PR) as the source of P for corn grown on Hartsells fine sandy loam (pH 5.2 and 6.3) in greenhouse pot experiments. Effectiveness of granular fertilizers for supplying P to the crops decreased as follows: PR + superphosphate > PR + H‐resin > PR + S > PR alone. An intermediate size of granules of PR + S + soil was more effective than either coarser or finer material. H‐resin added to spots of PR in the soil was much more effective in solubilizing P than equivalent amounts of acid as H 2 SO 4 or S. Acidulating PR in the soil with H‐resin or H 2 SO 4 was considerably less effective for solubilizing PR than acidulation prior to application.