Does not have any moving parts for the distribution of water. Note: They may have moving parts for other features such as anti-insect protection
Lower CV than micro-sprinklers
Generally, have a smaller wetting diameter than micro-sprinklers, and are more impacted by wind
Also called “Sprays” and “Sprayers” in some regions
Common models: Rivulis Tornado Ray Jet and Rivulis JFR
Therefore, micro-sprinklers are the clear winner, right?
Reading the above, you may conclude that micro-sprinklers deliver better product performance. This is true from a CV evaluation especially, but there are some other factors you should consider when evaluating what is right for you.
Jets have no moving parts which provides greater reliability and less parts to wear out
To deliver multiple streams from the nozzle, the orifice of jets is larger which in turn improves resistance to clogging
And of course – cost! Jets generally cost less than micro-sprinklers
So, what do you choose?
The most important decision factor is the crop you need to irrigate.
Without a doubt, if you are growing vegetables, you should choose a micro-sprinkler. For vegetables, you need excellent uniformity so that each individual plant receives the same application of water. Micro-sprinklers deliver the best uniformity (CV). Add some wind into the mix, and the importance becomes even greater.
If you are growing an orchard, you have more choice. Trees have a large root system and therefore the CV of the individual sprinkler/jets wetting pattern is less important. What matters is the uniformity over the entire field. Therefore, generally a jet will be sufficient for an orchard from a CV perspective. In addition, you get greater reliability. E.g. a leaf falling on a micro-sprinkler can stop operation if it jams the spinner. This risk is eliminated with jets.
Are there other considerations?
Yes. There are a number of other considerations including:
Flow rate: The maximum jet flow rate is 102 l/h. Micro-sprinkler flow rates can reach 300 l/h.
Wetting diameter: Jets give you the option of 180°, 300° and 360° wetting patterns. Sprinklers do not offer this flexibility, although the Rivulis S2000 Micro sprinkler does provide a trunk protector deflector option.
Do you need anti-insect, pressure compensation, or to hang inverted? These features are available in both micro-sprinklers and jets (Availability depends upon the model).
As you can see, there are many questions to ask when considering whether to use a micro-sprinkler or a jet. Fortunately, Rivulis has one of the widest product ranges of jets and micro-sprinklers, so you can find a solution for your specific open-field vegetable, under tree orchard and greenhouse irrigation application.
