The image above represents average depth of water applied. Four essential parameters are needed to calculate the average depth of water applied: stream size (q), duration of irrigation (t), furrow space (w), and furrow length (l).
The formula for calculating average depth of water applied:
d = 3600q . t / w . l
Where:
d = Average Depth of Water Applied
q = Stream Size
t = Duration of Irrigation
w = Furrow Space
l = Furrow Length
Let’s solve an example;
Find the average depth of water applied when the stream size is 8, duration of irrigation is 12, furrow space is 10 and furrow length is 4.
This implies that;
q = Stream Size = 8
t = Duration of Irrigation = 12
w = Furrow Space = 10
l = Furrow Length = 4
d = 3600q . t / w . l
That is, d = 3600(18) . (12)Â /Â (10) . (4)
d =Â 777600Â /Â 40
d = 19440
Therefore, the average depth of water applied is 19440.
Calculating the Stream Size when the Average Depth of Water Applied, the Duration of Irrigation, Furrow Space and the Furrow Length are Given
q = d x w.l / 3600 x t
Where;
q = Stream Size
d = Average Depth of Water Applied
t = Duration of Irrigation
w = Furrow Space
l = Furrow Length
Let’s solve an example;
Find the stream size when the average depth of water applied is 20, the duration of irrigation is 3, the furrow space is 8 and the furrow length is 4.
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This implies that;
d = Average Depth of Water Applied = 20
t = Duration of Irrigation = 3
w = Furrow Space = 8
l = Furrow Length = 4
q = d x w.l / 3600 x t
So, q = 20 x 8.4 / 3600 x 3
q = 640 / 10800
q = 0.059
Therefore, the stream size is 0.059.
Read more:Â How to Calculate and Solve for Time Required to Irrigate | Irrigation Water Requirement
Calculating the Duration of Irrigation when the Average Depth of Water Applied, the Stream Size, the Furrow Space and the Furrow Length are Given
t = d x w.l / 3600 x q
Where;
t = Duration of Irrigation
d = Average Depth of Water Applied
q = Stream Size
w = Furrow Space
l = Furrow Length
Let’s solve an example;
Find the duration of irigation when the average depth of water applied is 24, the stream size is 2, the furrow space is 6 and the furrow length is 4.
This implies that;
d = Average Depth of Water Applied = 24
q = Stream Size = 2
w = Furrow Space = 6
l = Furrow Length = 4
t = d x w.l / 3600 x q
That is, t = 24 x 6.4 / 3600 x 2
t = 576 / 7200
t = 0.08
Therefore, the duration of irrigation is 0.08.
Calculating the Furrow Space when the Average Depth of Water Applied, the Stream Size, the Duration of Irrigation and the Furrow Length are Given
w = 3600q.t / d x l
Where;
w = Furrow Space
d = Average Depth of Water Applied
q = Stream Size
t = Duration of Irrigation
l = Furrow Length
Let’s solve an example;
Find the furrow space when the average depth of water applied is 14, the stream size is 10, the duration of irrigation is 8 and the furrow length is 2.
This implies that;
d = Average Depth of Water Applied = 14
q = Stream Size = 10
t = Duration of Irrigation = 8
l = Furrow Length = 2
w = 3600q.t / d x l
Then, w = 3600 (10)(8) / 14 x 2
w = 288000 / 28
w = 10285.7
Therefore, the furrow space is 10285.7.
Calculating the Furrow Length when the Average Depth of Water Applied, the Stream Size, the Duration of Irrigation and the Furrow Space are Given
l = 3600q.t / d x w
Where;
l = Furrow Length
d = Average Depth of Water Applied
q = Stream Size
t = Duration of Irrigation
w = Furrow Space
Let’s solve an example;
Find the furrow length when the average depth of water applied is 18, the stream size is 4, the duration of irrigation is 6 and the furrow space is 10.
This implies that;
d = Average Depth of Water Applied = 18
q = Stream Size = 4
t = Duration of Irrigation = 6
w = Furrow Space = 10
l = 3600q.t / d x w
So, l = 3600 (4)(6) / 18 x 10
l = 86400 / 180
l = 480
Therefore, the furrow length is 480.
How to Calculate Average Depth of Water Applied | Furrow Irrigation Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the average depth of water applied.
To get the answer and workings of the average depth of water applied 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 Average Depth of Water applied | Furrow Irrigation under Irrigation Water Requirement
The screenshot below displays the page or activity to enter your values, to get the answer for the average depth of water applied according to the respective parameters which is the Stream size (q), Duration of irrigation (t), Furrow space (w) and Furrow length (l).
Now, enter the values appropriately and accordingly for the parameters as required by the Stream size (q) is 8, Duration of irrigation (t) is 12, Furrow space (w) is 10 and Furrow length (l) is 4.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the average depth of water applied and presents the formula, workings and steps too.
