The image above represents the time required to irrigate. Three essential parameters are needed to calculate the time required to irrigate: the Area of the Land (A), the Depth of the Water to be Applied (dw), and the Discharge of the Stream (q).
The formula for calculating the time required to irrigate:
t = A . dw / q
Where the following applies:
t = Time Required to Irrigate
A = Area of the Land
dw = Depth of the Water to be Applied
q = Discharge of the Stream
So, let’s Solve an example;
Find the time required to irrigate when the area of the land is 14, the depth of the water to be applied is 20 and the discharge of the stream is 10.
This implies the following:
A = Area of the Land = 14
dw = Depth of the Water to be Applied = 20
q = Discharge of the Stream = 10
t = A . dw / q
t = 14 . 20 / 10
So, t = 280 / 10
t = 28
Therefore, the time required to irrigate is 28.
Calculating for the Area of the Land when the Time Required to Irrigate, the Depth of the Water to be Applied and the Discharge of the Stream is Given
A = t x q / dw
Where the following applies:
A = Area of the Land
t = Time Required to Irrigate
dw = Depth of the Water to be Applied
q = Discharge of the Stream
So, let’s Solve an example;
Find the area of the Land when the time required to irrigate is 20, the depth of the water to be applied is 12 and the discharge of the stream is 3.
This implies the following
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t = Time Required to Irrigate = 20
dw = Depth of the Water to be Applied = 12
q = Discharge of the Stream = 3
A = t x q / dw
That is, A = 20 x 3 / 12
A = 60 / 12
A = 5
Therefore, the area of the land is 5.
Read more:Â How to Calculate and Solve for Inflow Time | Irrigation Water Requirement
Calculating for the Depth of the Water to be Applied when the Time Required to Irrigate, the Area of the Land and the Discharge of the Stream are Given
dw = t x q / A
Where the following applies:
dw = Depth of the Water to be Applied
t = Time Required to Irrigate
A = Area of the Land
And then, q = Discharge of the Stream
Then, let’s Solve an example;
Find the depth of the water to be applied when the time required to irrigate is 15, the area of the land is 14, and the discharge of the stream is 12.
This implies that;
t = Time Required to Irrigate = 15
A = Area of the Land = 14
q = Discharge of the Stream = 12
dw = t x q / A
That is, dw = 15 x 12 / 14
dw = 180 / 14
d = 12.85
Therefore, the depth of the water to be applied is 12.85.
Calculating for the Discharge of the Stream when the Time Required to Irrigate, the Area of the Land and the Depth of the Water to be Applied is Given
q = A . dw / t
Where;
q = Discharge of the Stream
t = Time Required to Irrigate
A = Area of the Land
And then, dw = Depth of the Water to be Applied
So, let’s Solve an example;
Find the discharge of the stream when the time required to irrigate is 20, the area of the land is 10 and the depth of the water to be applied is 8.
This implies the following:
t = Time Required to Irrigate = 20
A = Area of the Land = 10
dw = Depth of the Water to be Applied = 8
q = A . dw / t
q = 10 . 8 / 20
So, q = 80 / 20
q = 4
Therefore, the discharge of the stream is 4.
Read more:Â How to Calculate and Solve for Discharge | Logarithmic Method | Irrigation Water Requirement
How to Calculate Time Required to Irrigate Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the time require to irrigate.
To get the answer and workings of the time required to irrigate 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 Irrigation Water Requirement under Agricultural
Now, Click on Time Required to Irrigate under Irrigation Water Requirement
The screenshot below displays the page or activity to enter your values, to get the answer for the time required to irrigate according to the respective parameters which is the Area of the Land (A), Depth of the Water to be Applied (dw) and Discharge of the Stream (q).
Now, enter the values appropriately and accordingly for the parameters as required by the Area of the Land (A) is 14, Depth of the Water to be Applied (dw) is 20 and Discharge of the Stream (q) is 10.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the time required to irrigate and presents the formula, workings and steps too.
