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The aqueous transport of water‐soluble nematicides through soils. II. —the movement of phenol solutions at a constant percolation rate through a soil profile
Author(s) -
Phillips F. T.
Publication year - 1964
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740150704
Subject(s) - sorption , percolation (cognitive psychology) , phenol , soil water , leaching (pedology) , aqueous solution , chemistry , reaction rate constant , environmental chemistry , soil science , environmental science , kinetics , organic chemistry , adsorption , physics , quantum mechanics , neuroscience , biology
Phenol is used as a test chemical to simulate a water‐soluble nematicide. The concentration‐time product (C.T.P.) of phenol solutions percolated through water‐saturated soil profiles remains approximately constant at all depths, the band width broadening gradually. When percolated through weakly sorptive soils (sands, silts) which have similar linear sorption isotherms, the rate of leaching of the phenol band is directly proportional to the percolation rate and the C.T.P. is inversely proportional to the percolation rate. For highly sorptive soils (peats) with linear sorption isotherms, other factors have to be introduced. Sufficient winter rainfall is experienced in this country to leach the phenol band through 1–1 1/2 ft. depth, depending on the soil type.