You will need to have your complete soil
analysis in order to use the salinity calculator. Enter the
values of the specific soil parameters into the "test value"
column in the calculator. The soil parameters needed are:
- CEC
- Exchangeable sodium (Na)
- Calcium (CA)
- Magnesium (Mg)
- Soluble salts
- pH
The calculator will automatically
calculate the electrical conductivity (EC), exchangeable sodium
percentage (ESP), and the sodium adsorption ratio (SAR).
The soil salinity class will be
determined from these values and soil pH. Your soil salinity
class will be displayed as:
- Normal
- Saline
- Saline-sodic
- Sodic
Now you can enter a crop to determine
how much yield reduction can be expected due to soil salinity.
In each of the four boxes, you can scroll through various crops
by clicking the down or up arrows on each box. Select your
desired crop by clicking in the box.
A percentage number will appear below
the box. This value is the relative production of the maximum
potential yield for the selected crop based on soil salinity.
(For example: 85% means that you should only expect 85% of your
expected potential yield. This can also be stated as a 15% yield
reduction.)
To get to the calculator just click
on the link below
Crop/Soil
Salinity Calculator.xls (XP version)
Crop/Soil Salinity Calculator.xls
(Microsoft Excel 97-2002 & 5.0/95 Workbook version)
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