Soil Electrical Conductivity

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7 Terms

1
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What 3 things does soil EC measure?

• salinity

• moisture content

• clay content

2
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What are the order of soil conductivity?

Sand<Silt<clay<OM

3
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Why does GA primarily have differences in soil EC?

It is mostly due to texture. We do not worry about salt too often.

4
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What is the main factor that effects soil EC readings?

Soil moisture

5
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How does Werner method measure soil EC?

4 probes are spaced equidistant apart. 2 inject current and the other 2 detect voltage drop. The distance they are apart is the depth it measures.

6
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which set of probes inject in veris machines? which measure?

the #2 and #4 probes inject. The rest measure. 

7
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How does EMI work?

A transmitter coil induces a magnetic field that causes a current that can be read by a receiver.