NutriMax Liquid Fertilizer Applicator

The NutriMax liquid fertilizer applicator helps ensure optimum crop performance through precise placement of nutrients when it's most needed during periods of high growth. The unique fold design provides a narrow transport width, allowing you to easily travel from field-to-field. The 2600, 1800, 1400, and 1000 gallon tank capacities, 90' to 30' toolbar widths, and heavy-duty coulter design allow you to quickly cover your acres while keeping the coulter in the ground for consistent fertilizer placement. The rugged frame and toolbar design are built for high-speed application and 36" of toolbar clearance provides a longer application window. Innovative application options include a Single-Coulter, Double-Coulter and Dual-Delivery systems to meet individual grower preferences. Travel the extra mile, and cover the extra acre with the NutriMax!

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Take Yields to the Max

The NutriMax liquid fertilizer applicator was purpose-built for high-performing farm operations that are looking to maximize crop yield. The heavy-duty coulter design, custom molded tank on models 2600, 1800 and 1400, toolbar widths from 90’ down to 30’ and tank sizes ranging from 2,600 to 1,000 gallons means you can find the right NutriMax to fit your needs.
Model 2600 NutriMax In Field

Custom-Built Design

Models 2600, 1800 and 1400 feature an exclusive, custom-molded gray-colored poly tank that holds 2,600, 1,800 and 1,400 gallons of fertilizer respectively, which means you can cover more acres with fewer stops to fill.

A stainless-steel baffle inside the tank stabilizes the load in the field or when going down the road by limiting the liquid from sloshing back-and-forth when slowing down or speeding up.

The containment sump in the bottom of the tank functions like a sump-within-a-sump for holding the last 30-50 gallons of liquid on side-hills and inclines to maintain a primed pump.

Model 1000 Tank

Model 1000 features a gray-colored elliptical-style tank for a low-profile design and is mounted perpendicular to the hitch to reduce sloshing back-and-forth.

Convenience is Key

The front and rear tank-volume indicators with a red ball float on models 2600, 1800, and 1400 permit easy viewing from the tractor cab and from the rear of the unit for quick and easy filling. Model 1000 features a side-mounted tank volume indicator.

A 3” quick-fill with an on/off valve is located at the rear of the unit for faster filling and a quicker return to the field.  Model 1000 features a 2” quick fill located at the rear of the unit.  Models 2600, 1800, and 1400 feature standard tank agitation with a manual on/off valve located at the rear of the unit.

A 9-gallon clean-water tank is equipped with an eye-wash tube and water spout for quick response.


Transportation Innovation

The NutriMax liquid fertilizer applicator features an innovative, patented fold design on 60’ and larger toolbars to achieve a narrow transport width for easy movement from field-to-field. Models 2600 and 1800 feature a 14’9” transport width with a 60’ toolbar, model 1400 folds to 14’9” with a 40’ toolbar, and model 1000 has a transport width of 13’9” with a 30’ toolbar.

Toolbar Sizes


Model 2600 features toolbar widths of 90’, 88’, 80’, 66’ and 60’ on 30”, 22” or 20” spacing depending on the toolbar size. 

Model 1800 features toolbar widths of 66’, 60’, 44' and 40’ foldable to 30' on 30”, 22” or 20” spacing depending on toolbar size. 

Model 1400 features toolbar widths of 44’ and 40’ foldable to 30' with 38”, 36”, 30”, 22”, or 20” spacing depending on toolbar size. 

Model 1000 features a 30’ toolbar with 38”, 36”, 30”, 22” or 20" spacing.

Many NutriMax liquid fertilizer applicators feature toolbars with dual-width application versatility.  90’ toolbars can fold and operate at 60’, 60’ toolbars can fold and operate at 40’ and 40’ toolbars can fold and operate at 30’.  Model 1400 is also available with a rigid 40’ toolbar for a more economical design and model 1000 features a rigid 30’ toolbar.

The coulters on the center toolbar section feature 18" of ground clearance on models 2600 and 1800 and 13.5" of ground clearance on models 1400 and 1000 when in the road transport position.

NutriMax liquid nitrogen applicator, liquid fertilizer applicator, liquid fertilizer, nitrogen applicator, 28 applicator

Unmatched Field Performance

36" of toolbar operating clearance allows you to apply at later growth stages when it is needed most by the plant. Hydraulic down pressure on models 2600, 1800, and 1400 provides active toolbar downforce to keep the coulters in the ground for consistent penetration. Parallel linkages on models 2600 and 1800 enhance the down pressure on the coulters for consistent fertilizer positioning in the row.

Wing Tilt

The hydraulic wing tilt feature on models 2600, 1800, and 1400 automatically raises the wings 15° when raising the toolbar on end rows for minimizing crop damage while turning. Four tool-free adjustable toolbar gauge wheels on models 2600 and 1800 and two gauge wheels on models 1400 and 1000 ensure consistent working depth.


All models feature standard wing flex that allows the wings to move 15° above and 10° below horizontal on models 2600, 1800, and 1400 and 7° above and 7° below horizontal on model 1000 to follow field contours for consistent application over uneven terrain.

Models 2600 and 1800 feature a toolbar constructed of dual, 5”x 7” tubing on the center section and mid-wings and a single 6”x 6” tube on the outer wing.  The toolbar and frame are finished in your choice of a high-quality red or green finish that resists corrosion.

Models 1400 and 1000 feature a toolbar constructed of a single, 7"x7" tube on the center section and wings.  The toolbar and frame are finished in your choice of a high-quality red or green finish that resists corrosion.

Application Systems

Heavy-Duty Coulter

Durability is Standard

The NutriMax liquid applicator features the heaviest coulter system in the industry that is built to stand up to the toughest ground conditions. With innovative options like the Double Coulter and Dual Delivery application systems, along with the standard single coulter system, you can tailor the NutriMax liquid applicator to fit your fertilizer program.

Single Coulter System

Square-tube coulter posts mounted to the toolbar with cast iron clamps and straight bolts ensure that the coulter stays straight and the mounting posts won’t twist in tough conditions.

The 20” diameter coulter blades feature six-bolt coulter hubs for extended life with 1,500 lbs. of down pressure for consistent soil penetration regardless of soil density.

Choose from straight or wavy coulter blades that can swivel up to 15° in each direction for 30° of total travel which accurately follows the terrain.  The greaseable pivot point for the swivel ensures you can purge out corrosive fertilizer for greater longevity.

Choose a high-pressure injection nozzle or injection knife that is mounted on a heavy-duty, 1” thick mounting arm for consistent and long-term on-target application.

Double Coulter System

This system features the same heavy-duty components as the Single-Coulter system, but utilizes 2 coulters that are offset 10" apart between each row. The nozzles inject fertilizer 5" closer to each row which is 33% closer than a single-coulter system! Studies have shown that injecting nitrogen closer to the plant root equates to increased yield and better uptake.

Dual Delivery System

This innovative application system combines a Single-Coulter down the center of each row with two trailing hoses, one mounted on each side of the coulter. This allows the operator to inject nitrogen into the soil down the middle of the row and apply it on top of the soil right next to the plant root.

A selector valve allows the user to apply with both the coulter and hoses at the same time or just one system or the other depending on preference.  The u-shaped steel coulter mounting bracket positions each tube outward for consistent application at the plant's base for optimum nitrogen uptake when moisture is available.

Ace Pump

Plumbing & Pumps

The standard hydraulic pump features pulse-width modulation that won’t overspeed the hydraulic motor, provides instant swath control response and only runs to meet the output demand which maximizes pump life.  Models 2600 and 1800 feature an Ace 750 PWM pump with run-dry technology and models 1400 and 1000 feature an Ace 205 PWM pump.

Electric Flo-Bak® ball valves are mounted on the toolbar for a faster response time and fertilizer savings on each shut-off.  The Flo-Bak ball valve system immediately turns off the plumbing to each row and returns the remaining liquid in the plumbing lines back to the tank.

For application versatility and applying fertilizer only where it’s needed, 6-section plumbing is standard on 80' and larger toolbars, 5-section plumbing on 66’ to 40’ toolbars, and 3-section plumbing on 30’ toolbars.

The standard flow ball indicator system mounted at the front of the applicator allows the operator to easily monitor the flow to each row.

ISOBUS Controls

The Raven ISOBUS controller conveniently connects to the tractor’s virtual terminal screen to control the rate of application and features a pressure transducer to monitor the toolbar pressure on the VT screen.


Gooseneck Hitch NutriMax

Gooseneck Hitch

The gooseneck hitch design enhances the downforce on the toolbar for penetrating tough soils and the short hitch-to-axle length permits tighter turns for less crop rundown.

Single Wheels and Tires

Single or Dual Wheels & Tires

Single wheels and tires are available on models 1800, 1400, and 1000 and dual wheels and tires are available on models 2600 and 1800.   Models 1800 and 1400 with single and dual wheels and tires feature heavy-duty 10-bolt hubs, while model 1000 features 8-bolt hubs.

Models 2600, 1800, and 1400 feature an adjustable axle for accommodating numerous wheel and tire options and row spacings.  The axle on models 2600 and 1800 with single or dual wheels & tires can adjust from 60" to 120" centers.  The axle on model 1400 with single wheels and tires can adjust from 88" to 132" centers.  Model 1000 features a rigid axle design on 120” centers.

Equalizer Tracks

Available on models 2600 and 1800 with an adjustable axle from 88" to 144" centers. The 16”-wide rubber track belt with an exclusive, patent-pending camber design pivots from side-to-side and front-to-rear for maintaining uniform ground contact in uneven terrain.

The shallow-tread design on the track belt allows for a greater footprint for increased flotation and easier turning.  Self-cleaning rubber-coated mid-rollers and end-wheels on the track maximize in-field performance while the standard fenders provide added protection during transport.

Options & Accessories

 Chemical Inductor NutriMax

Inductor System

The optional 15-gallon inductor system allows the operator to easily add micronutrients from ground level and includes agitation to keep the fertilizer in proper suspension while applying.

Steerable Hitch

Steerable Hitch

The innovative steerable hitch option provides added steering control for only one set of tracks on end rows to minimize crop damage. The steerable hitch is controlled through the tractor’s virtual terminal screen and features an automatic setting for following the tractor on turns without user involvement or a manual setting where the operator can adjust the steering on side hills.

Closing Wheel System

The optional closing wheel package helps fill the slot created by the coulter with soil to prevent fertilizer loss.

 Stainless Steel Pump

Additional Accessories

Other accessories include stainless steel hydraulic-operated pump for longer life, ground drive pump on models 1400 and 1000 and a Raven 450 rate controller with Astro II GPS receiver in-lieu of the standard ISOBUS controller.

Nitrogen 101

The Nitrogen Cycle-Credit:

Basic Information

Dry/Granular by Broadcasting – Urea contains 46% nitrogen

Gas/Vapor by Banding - Anhydrous Ammonia contains 82% nitrogen

Liquid by Injection – UAN Solutions contain 28% or 32% nitrogen

Nitrogen can be lost due to denitrification, volatilization, or leaching.  Denitrification occurs when the soils are not the proper temperature and the nitrogen turns into a gas and is lost in the air.  Volatilization is a biological process that occurs when urea molecules convert to ammonia gas and are released into the atmosphere.  Leaching is when the nitrate molecule is not held in the soil and is carried by excess water below the root zone.  Our goal is to reduce fertilizer loss!

One of the ways we can minimize loss is by delaying part of the nitrogen application process until the corn is 10 to 16 inches tall (side dressing), which can minimize leaching and denitrification when corn needs it the most.

Corn needs nitrogen at each stage of development, however, most nitrogen is required prior to the grain fill period.  For reference, approximately 1 pound of nitrogen yields 1 bushel of corn.  If the goal is 200 bushels of corn per acre, then 200 pounds of nitrogen per acre is needed.  Ideally, 50 pounds would be applied at planting and another 150 pounds at side dressing (when the plant is between 10 and 16 inches tall and needs it most).


Model - Toolbar Transport Width Transport Length Transport Height Height to Top of Tank Hitch to Axle Empty Weight (appx. lbs.) Tongue Weight Transport (appx. lbs.) Tongue Weight Field (appx. lbs.) H.P. with Injector H.P. with Knives
Tracks Duals Singles
Due to continuing improvements in the design and manufacture of Unverferth products, all specifications contained herein are subject to change without notice.
2600 - 90'/88'/80' 15' 30'3" 13'6" 10'8" 15'10" 27,500 22,000 - 2,700 8,500 300 340
2600 - 66'/60' 14'9" 24'3" 13'6" 10'8" 15'10" 24,000 18,500 - 4,700 7,500 260 300
1800 - 66'/60' 14'9" 24'3" 13'6" 10'8" 15'10" 23,500 18,000 16,500 4,700 7,500 220 260
1400 - 44'/40' 14'9" 19'4" 12'4" 11'7" 12' - - 11,020 1,440 1,880 140 160
1400 - 40' Single Width 14'9" 24'4" 12'4" 11'7" 12' - - 10,500 1,440 1,880 140 160
1000 - 30' Single Width 13'9" 16'8" 11'6" - - - - 7,100 1,800 2,500 120 140