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Variations in Tension Lysimeter Leachate Volumes
Author(s) -
Cochran P. H.,
Marion Giles M.,
Leaf Albert L.
Publication year - 1970
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/sssaj1970.03615995003400020035x
Subject(s) - lysimeter , outwash plain , leachate , environmental science , water content , hydrology (agriculture) , soil science , soil water , tension (geology) , geology , flow (mathematics) , glacial period , geotechnical engineering , geomorphology , materials science , chemistry , environmental chemistry , mathematics , ultimate tensile strength , metallurgy , geometry
Leachate volumes collected with tension plate lysimeters placed in a glacial outwash soil and maintained at a fixed tension varied from 1.9–629.9% of the total water applied through rainfall and/or irrigation. The amounts of K passing through plates at depths of 152 cm ranged from 0.02–86.1% of that applied at the surface. These differences were attributed to several factors including (i) nonuniform application of water, (ii) large differences in soil moisture retention and flow properties for individual strata, and (iii) irregularity of soil strata arrangement at different locations within the study area. Lateral flow to plate surfaces can result in large overestimates of the nutrient flux at a given soil depth.