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Performance Evaluation and Accuracy of Passive Capillary Samplers (PCAPs) for Estimating Real-Time Drainage Water Fluxes

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Applied Engineering in Agriculture. 28(4): 537-542. (doi: 10.13031/2013.42083) @2012
Authors:   J. D. Jabro, W. M. Iversen, R. G. Evans
Keywords:   Irrigation, Drainage, Lysimeter, Performance, Vadose zone

Successful monitoring of pollutant transport through the soil profile requires accurate, reliable, and appropriate instrumentation to measure amount of drainage water or flux within the vadose layer. We evaluated the performance and accuracy of automated passive capillary wick samplers (PCAPs) for their ability to monitor and estimate real-time drainage water fluxes by comparing amounts of drainage recorded by the datalogger from the tipping buckets with manually collected drainage amounts. Drainage water fluxes were online estimated and manually collected below the rootzone of a sugarbeet-potato-barley using five years of data.

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