NETAFIM NUTRIGATION™

™

DOSING SYSTEMQUICK SELECTION GUIDEA dosing unit serves Nutrigation™ and chemigation:
Nutrigation™
The most effective way to increase the yield and quality of a crop is by feeding the plant according to its
specific, ever-changing needs. This means delivering the right amount of water and nutrient at the righttime. Nutrigation™ refers to injection of nutrients for the plant.
Nutrigation™ is comprised of three stages:• Dissolving soluble fertilizers (if required).
• Injecting nutrients according to the desired dosing ratios.
• Delivering the precise quantity of nutrients to the plant's root zone.
Chemigation
Chemigation refers to injection of chemicals to prevent or reduce dripper clogging (addition of chlorine,hydrogen-peroxide, acid or others), and the injection of chemicals for crop and soil concerns (herbicides,pesticides and others).
Because the water passages in drippers are relatively small, they can become clogged; therefore, alongwith filtration, the capability to inject chemicals for dripper clogging control is an important feature.
Benefits of Nutrigation™ and/or chemigation:• Uniform and timely application of nutrients and chemicals• Reduced soil compaction due to reduced traffic in fields• Reduced labor requirements, reduced exposure to chemicals• Reduced environmental contamination.
The design of a chemical injection system involves the selection of injector type and capacity. If theinjection system is to be used for Nutrigation™, the injection unit is sized for this use since injection rates
for nutrients are usually much higher than injection rates for chemicals such as liquid chlorine or acid.
Any components coming in contact with nutrients, chlorine, or acid should be resistant to corrosion. Somecountries require specific types of injectors for agrochemicals. Always follow local laws and chemical labelingrequirements.
Nutrients and chemicals may be injected into pressurized drip systems via a variety of methods:
Netafim™ offers a comprehensive array of dosing systems to ensure precise nutrient delivery for any crop,plot size and application.

Fertilizer Tank

A fertilizer tank mixes water with fertilizer for quantitative Nutrigation™. It is operated
by the hydraulic pressure in the irrigation system and does not need an external energy
source (subject to excess pressure available in the system). The desired amount offertilizer placed in the tank is dissolved and injected into the irrigation system.
Can be connected to the irrigation system in two ways:• Inline - installed directly on the main line
(typical of very low capacity systems).
• Bypass - installed as a bypass from the main line, a manual or hydraulic pressure
reducing valve (PRV), installed on the main line, produces the required pressure
differential to operate the fertilizer tank (typical of high capacity systems).
Fertilizer tanks are simple to use and maintain.

Hydraulic piston motor injector

Its linear hydraulic piston motor is powered by the hydraulic pressure in the irrigation
system, and does not require any other energy source for injecting fertilizer into thepressurized irrigation line. Water enters the injector through the upstream inlet and exits
it to the drain line through the water outlet. The fertilizer is injected at twice the pressureof the irrigation line, generated by the hydraulic piston motor itself. The liquid fertilizer
enters the injector through the suction port positioned inside the fertilizer tank and isinjected through the injection outlet, downstream, into the irrigation line.
The water consumption of the hydraulic motor is 3 times the quantity of the chemical injected and it can
produce an injection flow rate of up to 320 liter/hour (1.4 GPM), depending on the inlet pressure andthe pump model. Can be operated manually or automatically by an irrigation controller.

Netafim Venturi Injector - up to 2"

3/4"
2"
A Venturi injector uses excess pressure in the irrigation system to create a low pressurezone, or vacuum, in the injector throat. This vacuum efficiently draws chemicals into thepressurized water line, eliminating the need for a separate chemical injection pump.
Venturi injectors are the most cost-effective method of introducing chemicals into apressurized irrigation system, popular because of their simplicity, reliability and low cost,and because they don’t require a power source.
Can be easily connected to the irrigation system in two ways:• Inline - installed directly on the main line (typical of very low capacity systems).
• Bypass - installed as a bypass from the main line, a manual or hydraulic pressure reducing valve(PRV), installed on the main line, produces the required pressure differential to operate the Venturi injector(typical of high capacity systems).
Venturi injectors include no moving parts and require little maintenance.
They supply an extremely uniform injection rate from start to finish at nominal system flows rates.
Chemical injection capacity: 30 - 1200 l/hr (8 - 320 GPH) depending on injector size andoperating pressure. Can be operated manually or automatically by an irrigation controller.

Electric dosing pumpIntended for flow rates up to 25 l/hr (6.6 GPH), the electric pump is usually used for
injection of chemicals and acids for system maintenance. Maximum pressure: 10 bar (145 PSI).

Hydraulic fertilizer injector (proportional)

Applies fertilizers and chemicals proportionally to the water flow through an irrigation system in theslow and constant quantities required for steady growth.
Widely used in open fields, orchards and landscaping to inject an additive into a water line at aconsistent injection rate under varying water pressure and flow rates.
This process, injecting additives using only water power, is accurate and simple.
• Water driven, non-electric• Piston driven by water flow
• Solution is added in proportion to water flow for accurate mixing• Solution is constantly added as water flows through the unit
• Ratio of additive remains constantSingle channel Mini FertiKit

Venturi injector with booster. This method is used when thepressure differential in the main line is not sufficient to activate a basic Venturi
dosing unit. The booster pump creates additional pressure to activate the Venturi
while preventing head loss to the system. Supplied with selected size of Venturi(up to 3/4"). A check valve should be installed upstream from the bypass.
Can be operated manually or automatically by an irrigation controller.

FertiKit3G™

The FertiKit3G™ is a highly versatile and precise dosing system suitable for an unrivaled
range of irrigation system capacities. Covers all applications ranging from open fields
to intensive horticulture. Requiring a minimal investment, the FertiKit3G™,
a CE-compliant modular system, is the industry's most cost-effective dosing system,
whether used for small or large-scale applications.
• Flexible: Works with a very wide range of dosing channel flow rates
up to 6 units of 50 to 1000 l/hr.
• Scalable: For systems from 5 m3 /h to 700 m3 /h capacity and pressures
up to 8.0 bar.
• Cost-effective: Requires minimal investment with rapid ROI.
• Modular: Available in four models including two that do not require abooster pump.

NetaFlex3G™

The NetaFlex3G™ is a reliable, state-of-the-art, open-tank dosing system
ensuring very precise and even nutrient dosing for greenhouse crops.
A CE-compliant modular system, the NetaFlex™ easily integrates with multiple
Netafim™ and third-party control and monitoring systems, while delivering auniform quantity or ratio of nutrients.
• Productive: Employs precise EC and pH control to assist in delivering ahigh-quality product with outstanding yields.
• Uniform: Delivers a consistent quantity or ratio of nutrients in a homogenous
solution thanks to an open mixing tank design.
• Flexible: Works with a wide range of dosing channel flow rates up to6 units of 50-600 l/hr.
• Scalable: System flow rates from 5 m3 /h to 60 m3 /h capacity.
• Focused: Made for greenhouse applications.

NetaJet3G™

The NetaJet3G™ is a uniform low-energy dosing system featuring a state-ofthe-art mixing chamber.
It provides the highest level of dosing precision and uniformity for greenhouseand open-field crops.
A CE-compliant modular dosing system, the NetaJet3G™ easily integrates
with multiple Netafim™ and third-party control and monitoring systems.
• Productive: Employs precise EC and pH control to deliver consistently
high-quality product with outstanding yields.
• Uniform: Delivers a consistent quantity/ratio of nutrients thanks to an
innovative mixing chamber while maintaining perfect EC and pH control.
• Flexible: Works with a wide range of dosing channel flow
rates up to 5 units of 1000l/hr dosing channels.
• Cost-efficient: Using a single pump for mixing andinjection of nutrients, the NetaJet3G is designed toaccurately dose with low levels of energy consumption.
• Scalable: Scales from 5 m3 /h to 400 m3 /h capacity andpressures up to 6.5 bar.
• Versatile: Suitable for applications ranging from greenhouses
to net houses.

SELECT A DOSING SYSTEM
Relevant terms:• Single dosing channel - for injection of only one type of fertilizer solution at the same time.
• Multiple dosing channels - for injection of several fertilizer solutions at the same time or of a single
fertilizer solution at a higher rate.
• Bulk/Quantitative Nutrigation™ - The entire amount of fertilizers is injected in one shot.
• Proportional Nutrigation™ - The fertilizers are injected at a constant ratio relative to the flow of irrigationwater in the main line.
• Nutrigation™ based on EC and pH control - Nutrigation™ is constantly adjusted in order to keep a steadyEC and pH level according to the plant's needs.
Can be conveniently accomplished with a controller (Netaflex™, NetaJet™ or FertiKit™) on the dosing
system and EC and pH sensors on the dosing unit.

Select the appropriate dosing unit:

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Will work only if the pressure difference between
inlet and outlet is at least 0.3 bar (3 meters).
Consumes water 3 times the quantity of thechemical injected.
Requires 15-75% pressure differential for optimal
operation, according to the required injection rate.

Fertilizer tank
Hydraulic piston
motor injector
Netafim ™ Venturi
injector
Electric dosing
pump
Hydraulic fertilizer
injector (proportional)
Single channel
Mini FertiKit
FertiKit3G™

thcenelsse

Recommended for:

Requires 15-30% pressure differential for optimal
operation, according to the required injection rate.
Legend:orElectricity is available on site.

NetaFlex3G™

Extra pressure is available inthe system in addition to therequired pressure for current
irrigation.

NetaJet3G™

For detailed technical data, see the product's datasheet at
http://www.netafim.com/product/dosing-system---quick-selection-guide.
For clarifications or in case of doubt consult a Netafim™ expert.

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