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Hydrolysis and Sorption of Ortho‐, Pryo‐, Tripoly‐, and Trimetaphosphate in 32 Midwestern Soils
Author(s) -
Blanchar R. W.,
Hossner L. R.
Publication year - 1969
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/sssaj1969.03615995003300040037x
Subject(s) - sorption , hydrolysis , chemistry , soil water , pyrophosphate , environmental chemistry , nuclear chemistry , organic chemistry , adsorption , soil science , environmental science , enzyme
Hydrolysis and sorption reactions of orthophosphate (OP), pyrophosphate (PP), tripolyphosphate (TPP), and trimetaphosphate (TMP) were studied in 32 Corn Belt soils. TMP hydrolyzed to TPP in 1 day in all but two soils. TPP hydrolyzed to PP and OP within 7 days in 30 of 32 soils, and 15 to 80% of the PP formed in the soil remained after 14 days. The sodium salts of OP and PP were compared as P sources for corn and found to be equal. It was concluded that under our conditions (25C), the rate of TMP, TPP, and PP hydrolysis was rapid enough so it would not limit the availability of P to plants. TMP added to soil remained water soluble. The sorption of TPP and PP by soil was more than OP.