The image above represents water storage efficiency. To calculate water storage efficiency, two essential parameters are needed and these parameters are Water stored in the Root Zone of the Plant (ws) and Water needed in the Root Zone prior to Irrigation (wn).
The formula for calculating water storage efficiency:
Es = 100 . ws / wn
Where:
Es = Water Storage Efficiency
ws = Water stored in the Root Zone of the Plant
wn = Water needed in the Root Zone prior to Irrigation
Let’s solve an example;
Find the water storage efficiency when the water stored in the root zone of the plant is 34 and the water needed in the root zone prior to irrigation is 12.
This implies that;
ws = Water stored in the Root Zone of the Plant = 34
wn = Water needed in the Root Zone prior to Irrigation = 12
Es = 100 . ws / wn
Then, Es = 100 (34) / 12
Es = 3400 / 12
Es = 283.3
Therefore, the water storage efficiency is 283.3%.
Calculating the Water Stored in the Root Zone of the Plant when the Water Storage Efficiency and the Water needed in the Root Zone prior to Irrigation are Given
ws = Es x wn / 100
Where;
ws = Water stored in the Root Zone of the Plant
Es = Water Storage Efficiency
wn = Water needed in the Root Zone prior to Irrigation
Let’s solve an example;
Find the water stored in the root zone of the plant when the water storage efficiency is 30 and the water needed in the root zone prior to irrigation is 6.
This implies that;
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Es = Water Storage Efficiency = 30
wn = Water needed in the Root Zone prior to Irrigation = 6
ws = Es x wn / 100
That is, ws = 30 x 6 / 100
ws = 180 / 100
ws = 1.8
Therefore, the water stored in the root zone of the plant is 1.8%.
Read more:Â How to Calculate and Solve for Water Application Efficiency | Methods of Application of Water
Calculating the Water needed in the Root Zone prior to Irrigation when the Water Storage Efficiency and the Water stored in the Root Zone of the Plant are Given
wn = 100 x wn / Es
Where;
wn = Water needed in the Root Zone prior to Irrigation
Es = Water Storage Efficiency
ws = Water stored in the Root Zone of the Plant
Let’s solve an example;
Find the water needed in the root zone prior to irrigation when the water storage efficiency is 40 and the water stored in the root zone of the plant is 10.
This implies that;
Es = Water Storage Efficiency = 40
ws = Water stored in the Root Zone of the Plant = 10
wn = 100 x wn / Es
So, wn = 100 x 10 / 40
wn = 1000 / 40
wn = 25
Therefore, the water needed in the root zone prior to irrigation is 25%.
How to Calculate Water Storage Efficiency Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the water storage efficiency.
To get the answer and workings of the water storage efficiency using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
Web – https://www.nickzom.org/calculator-plus
To get access to the professional version via web, you need to register and subscribe for NGN 2,000 per annum to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Agricultural under Engineering.
Now, Click on Methods of Application of Water under Agricultural
Now, Click on Water Storage Efficiency under Methods of Application of Water
The screenshot below displays the page or activity to enter your values, to get the answer for the water storage efficiency according to the respective parameters which is the Water stored in the Root Zone of the Plant (ws) and Water needed in the Root Zone prior to Irrigation (wn).
Now, enter the values appropriately and accordingly for the parameters as required by the Water stored in the Root Zone of the Plant (ws) is 34 and Water needed in the Root Zone prior to Irrigation (wn) is 12.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the water storage efficiency and presents the formula, workings and steps too.
