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Upright Sprinklers for Bench Crops
This Sprinkler Selection Table represents an attempt to simplify a
complicated decision making process while at the same time presenting
alternatives. The table has been calculated using one row of sprinklers
per bench on a 3 foot sprinkler spacing and a 10" height. This spacing achieves optimum
results by balancing cost, CU (Coefficient of Uniformity) and the percentage of
water falling within the designated strip. Priority has been given to the
CU.
Other System options:
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Download Greenhouse & Nursery Design Catalog PDF (42Mb)
Choosing your upright sprinkler for bench crops:
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- Find the width of the area that you want to irrigate. In most cases
the width will determine the sprinkler type.
- Determine if you want to apply water at a high or low application
rate. The same color-coded nozzle can be used to create a low
precipitation rate as well as a high precipitation rate depending on the
width of the band and the height of the sprinkler.
- The color coded areas represent the nozzle and anti-mist color as
well
- Recommended operating pressure of 35 PSI.
- Usually the above three factors will determine the appropriate nozzle size
and anti-mist color. In some cases, a particular factor, such as
percentage of water in the strip, may determine the other variables such as
application rate and sprinkler height.
Recommended nozzle references:
| Sprinkler Selection Table |
Sprinkler Spinner Type |
Application Rate |
| Yellow (Flat) |
Green Kiwi |
Orange Oblong |
| Bench Width |
|
|
|
| 12' |
14' |
15' |
16' |
18' |
20' |
22' |
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| Coefficient of Uniformity %
(CU) |
|
|
|
Low |
|
|
|
|
High |
| Percentage of water in Strip. |
|
|
|
Low |
|
|
|
|
High |
| Precip. Rate (In/Hr) |
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|
| 0.58 |
0.58 |
0.58 |
0.61 |
0.62 |
0.59 |
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Low |
|
|
|
| 0.71 |
0.73 |
0.75 |
0.75 |
0.77 |
0.77 |
0.74 |
|
High |
Chart is based on 3' sprinkler spacing down the row and a 10" riser
height.
Download Greenhouse & Nursery Design Catalog PDF (42Mb)
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