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United States Department of Agriculture

Agricultural Research Service

Title: Imhoff Cone Calibration and Analysis of Soil Loss and Infiltration in Irrigated Furrows

Authors
item Lentz, Rodrick - UNIVERSITY OF IDAHO
item Sojka, Robert

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: November 10, 1993
Publication Date: N/A

Technical Abstract: Analysis of infiltration and runoff data from furrow-irrigation research is cumbersome and time consuming because calibration functions relating sediment settling-volumes in Imhoff cones to sediment concentration must be obtained for each treatment. Moreover, the manipulation of water and constituent runoff data for plotting and treatment comparison is awkward and tedious. The PASCAL program described in this paper reads experimental data from a text file and derives, displays, and statistically compares Imhoff calibration functions for any user-defined furrow group. It employs the computed or user-supplied calibration function to calculate infiltration, runoff, and sediment loss for each furrow. In addition, the software computes and plots group-averaged values for cumulative sediment loss and outflow sediment concentration as a function of irrigation duration.

Last Modified: 8/30/2014
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