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Investigation of groundwater salinity by geophysical methods

Submitted by landviser on Tue, 05/14/2013 - 17:39
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Geostatistical Analyses of Soil Salinity in a Large Field

Submitted by landviser on Tue, 05/14/2013 - 17:39
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Soil salinity assessment : methods and interpretation of electrical conductivity measurements

Submitted by landviser on Tue, 05/14/2013 - 17:39
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Electrical properties of soils

Submitted by landviser on Tue, 05/14/2013 - 17:39
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Soil Salinity Monitoring: Present and Future

Submitted by landviser on Tue, 05/14/2013 - 17:39
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Groundwater Investigation in Kuala Selangor Using Vertical Electrical Sounding (ves) Surveys

Submitted by landviser on Tue, 05/14/2013 - 17:39
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Turfgrass and landscape irrigation water quality: assessment and management

Submitted by landviser on Tue, 05/14/2013 - 17:39
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A Vertical Electrical Sounding Method for Agricultural Soil Survey

Submitted by landviser on Tue, 05/14/2013 - 17:38
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Evaluating cultivation level of sandy soils in European Russia with electro-geophysical methods

Submitted by landviser on Tue, 05/14/2013 - 17:38

Full text in PDF format is available for registered users @ http://www.landviser.net/webfm_send/240

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Quick Estimation of Salinity in Field Soils and Irrigation Water with LandMapper ERM-02

Submitted by landviser on Wed, 08/08/2012 - 16:57

ec mapping with Landmapper on dead rice field after hurracaine IkeSoil salinity is routinely evaluated in the labs from electrical conductivity of liquid soil saturation extract (ECe). The resulted total salinity is reported either directly in conductivity units (dS/m) or converted to TDS (total dissolved solids) concentration in ppm (parts per million) using formula: 1 dS/m = 1 mS/cm = 1 mmho/cm = 640 ppm = 640 mg/L= 0.64 g/L=0.064%

But now EC of soil and waters can be measured directly in the field using highly accurate method of four-electrode probe and Landmapper ERM-02 measuring device. Best of all, probes can be build to sense different soil layers down to 30 ft! Probes are simple and inexpensive to make from common materials available at any hardware store.

For irrigation water and soil solutions: To measure ECw just put 4-electrode probe of Landmapper used for mapping into a ditch, canal, or other water source. Make sure that all 4-electrodes are in contact with water. Take a reading in EC (conductivity) mode. Display will read (example):  
K0*C= 150m  - which indicates milli Siemens (mS/m)
To convert to dS/m, divide display number by 100, i.e. 150 mS/m=1.5 dS/m.
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