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Illinois Fertilizer Conference Proceedings
January 23-24, 1990

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Table 1. Characteristics of saturated solutions of three phosphate fertilizers at 250C (Lindsay et al., 1962).
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Fertilizer pH P moles Accompanying Cation
Monocalcium phosphate (MCP) Ca(H2PO4)2.H2O 1.48 3.98 Ca 1.44
Monoammonium phosphate (MAP) NH4 H2PO4 3.47 2.87 NH4 2.87
Diammonium phosphate (DAP) (NH4)HPO4 7.98 3.82 NH4 7.64

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