The image above represents water use efficiency. To calculate water use efficiency, two essential parameters are needed and these parameters are Crop yield (y) and Evapotranspiration (ET).
The formula for calculating water use efficiency:
Eu = y / ET
Where:
Eu = Water Use Efficiency
y = Crop Yield
ETÂ = Evapotranspiration
Let’s solve an example;
Find the water use efficiency when the crop yield is 40 and the evapotranspiration is 4.
This implies that;
y = Crop Yield = 40
ET = Evapotranspiration = 4
Eu = y / ET
So, Eu = 40 / 4
Eu = 10
Therefore, the water use efficiency is 10.
Read more:Â How to Calculate and Solve for Water Storage Efficiency | Methods of Application of Water
Calculating the Crop Yield when the Water Use Efficiency and the Evapotranspiration are Given
y = Eu x ET
Where;
y = Crop Yield
Eu = Water Use Efficiency
ETÂ = Evapotranspiration
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Let’s solve an example;
Find the crop yield when the water use efficiency is 14 and the evapotranspiration is 10.
This implies that;
Eu = Water Use Efficiency = 14
ET = Evapotranspiration = 10
y = Eu x ET
That is, y = 14 x 10
y = 140
Therefore, the crop yield is 140.
Read more:Â How to Calculate and Solve for Water Application Efficiency | Methods of Application of Water
Calculating the Evapotranspiration when the Water Use Efficiency and the Crop Yield are Given
Eu = y / Eu
Where;
ETÂ = Evapotranspiration
Eu = Water Use Efficiency
y = Crop Yield
Let’s solve an example;
Find the evapotranspiration when the water use efficiency is 12 and the crop yield is 48.
This implies that;
Eu = Water Use Efficiency = 12
y = Crop Yield = 48
Eu = y / Eu
So, Eu = 48 / 12
Eu = 4
Therefore, the evapotranspiration is 4.
Read more:Â How to Calculate and Solve for Evapotranspiration | Jensen Haide Method | Methods of Application of Water
How to Calculate Water Use Efficiency Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the water use efficiency.
To get the answer and workings of the water use 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 Use 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 use efficiency according to the respective parameters which is the Crop yield (y) and Evapotranspiration (ET).
Now, enter the values appropriately and accordingly for the parameters as required by the Crop yield (y) is 40 and Evapotranspiration (ET) is 4.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the water use efficiency and presents the formula, workings and steps too.
