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Irrigation Guide

USBR Water Manage- 
ment Plan

Water Quality Data

SOIL SAMPLERS

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Soil samplers are used to extract soil samples at particular depths in the crop rootzone.  When the soil sample for the top foot has been removed from the soil tube, the second foot soil sample can be extracted from the same hole.

Typically, these samples are taken to determine the soil moisture status at the different layers in the active rootzone.  The "Feel Method" is the quickest methodology to determine the soil moisture present, examine for the presents of roots or impeding layers to root expansion, or penetration of irrigation water.