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Solubility of Granular Inorganic Fertilizers for Fish Ponds
Author(s) -
Boyd Claude E.
Publication year - 1981
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1981)110<451:sogiff>2.0.co;2
Subject(s) - diammonium phosphate , settling , solubility , potash , chemistry , phosphate , fertilizer , phosphorus , ammonium nitrate , ammonium sulfate , ammonium , potassium , nitrogen , ammonium phosphate , nitrate , inorganic chemistry , nuclear chemistry , environmental engineering , chromatography , environmental science , biochemistry , organic chemistry
The solubilities of phosphorus from fertilizer granules settling through 2 m of water at 29 C were as follows: Superphosphate 4.6%; triple superphosphate 5.1%; monoammonium phosphate 7.1%; mixed 8–8‐8 (%N‐% P 2 O 5 ‐%K 2 O) fertilizer 11.4%; mixed 20–20‐5 fertilizer 11.9%; diammonium phosphate 16.8%. Nitrogen was highly soluble (61.7–98.8%) from settling granules of sodium nitrate, calcium nitrate, ammonium nitrate, ammonium sulfate, and the two mixed fertilizers. However, only 5.1 and 11.7%, respectively, of the nitrogen dissolved from settling monoammonium phosphate and diammonium phosphate. Potassium was readily soluble (80.9–87.0%) from settling granules of muriate of potash and the two mixed fertilizers. Reduction in particle size increased the solubility of phosphorus from settling granules of triple superphosphate and diammonium phosphate, but solubility of phosphorus was not affected by temperature. Fertilizers that did not dissolve quickly while settling did dissolve almost completely while standing in water for 24 hours.