The nozzle

To obtain an effective application, the distribution regularity of spreaded volume is very important.

This regularity is based on :

- the choice of nozzles
- the operating pressure
- the boom working height

The nozzle plays a major role to determinate the flow, the distribution and the droplets size : "split the chemical into droplets in sufficient quantity and quality".  This is called "the coverage".



The density of droplets required must be chosen according to drift risks. Nozzles can be classified according to droplets size.

From the smallest to the biggest droplets.

  • Flat fan nozzle AFX - RFX
  • Flat fan drift control nozzle with air injection (low pressure) ADX - RDX - ATX
  • Flat fan drift control nozzle with air injection (high pressure) ARX - RRX
  • Nozzles for liquid fertilizer applications TRIFILET - R5X

The ISO colour code (ISO) and the use of PENTAJET nozzle holder make choice of nozzles easier.


Coverage concept

The coverage concept is defined at the microscopic scale. 


Nomber of droplets per cm²

Type of operating

Between 20 to 30

 Systemic insecticide

Between 30 to 40

 Contact or ingestion insecticide

Between 20 to 30

 Pre-emergence herbicide

Between 30 to 40

Systemic post-emergence herbicide

Between 30 to 40

Penetrating post-emergence herbicide

Between 50 to 70

Contact herbicide

Between 50 to 70

Herbicide with effect on leafs and roots

Between 30 to 40

Systemic or combination fungicide

Between 50 to 70

 Contact fungicide


Drift concept

The droplets size determines the coverage, the retention and the drift.
The term of "drift" is used to define the part of chemical which is taken out of its original target.

The amount of drift may have several origins :

  • Atmospheric drift : wind effects, temperature effects, hygrometry effects
  • Ground drift : streaming effects on vegetation

To battle with the drift, we advise you to have nozzles with different technologies such as air injection.