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United States Department of Agriculture

Agricultural Research Service

Title: Combining Monolithic and Repacked Soil Tanks for High Water Table Lysimeters

Authors
item Schneider, Arland
item AYARS, JAMES
item Phene, C - RETIRED - USDA

Submitted to: American Society of Agricultural Engineers Meetings Papers
Publication Type: Other
Publication Acceptance Date: December 14, 1993
Publication Date: N/A

Technical Abstract: Soil monoliths collected above the water table and soil tanks repacked with soil from below the water table were combined for weighing lysimeters to be used in soil salinity research. Deadweights were used to press two, 2 x 4- m surface area by 1.68-m deep tanks into the soil, and the enclosed monoliths were undercut with steel plates. Innovative new equipment was used to control the deadweight movement, to maintain straight walls on the monolith tanks and to place the undercutting plates beneath the soil tanks. The monoliths and the soil for repacking the 1.07-m deep lower tanks were trucked 80 km to a research location where the monolithic and repacked soil tanks were joined and placed on weighing lysimeters. The monolithic/repacked soil tanks are expected to provide the advantages of a monolithic lysimeter without the disadvantage of lowering the high water table for collection of a deep monolith.

Last Modified: 9/10/2014
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