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Lysimeters Without Edge Flow: An Improved Design and Sampling Procedure
Author(s) -
Cameron K. C.,
Smith N. P.,
McLay C. D. A.,
Fraser P. M.,
McPherson R. J.,
Harrison D. F.,
Harbottle P.
Publication year - 1992
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/sssaj1992.03615995005600050048x
Subject(s) - lysimeter , monolith , casing , environmental science , leaching (pedology) , soil science , soil water , geology , petroleum engineering , chemistry , biochemistry , catalysis
A description is given of a modified lysimeter design and sampling procedure designed to prevent edge flow from occuring in large soil monolith lysimeters. An internal cutting ring at the base of the lysimeter casing produced a small annular gap between the soil monolith and the wall of the casing. This gap was filled with liquefied petrolatum, which provided a water‐tight seal around the edge of the lysimeter. Water and solutes were unable to leak between the monolith and casing. The use of petrolatum as a sealant is suitable for water‐flux and nutrient‐leaching studies, but is not suitable for pesticide studies.