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G2 2x2 Fertilizer Disc

Revolutionary Liquid Application System

 199/row John Deere, Kinze, White, Yetter

 69.45/row John Deere 7200/7300 upgrade kit

 87.85/row John Deere 7000/7100 upgrade kit

 217/row Monosem

 128/row Monosem upgrade kit

 30/row G2 high pressure kit

 40/row Stalk deflector

Schaffert Mfg. Co. offers a revolutionary method of applying larger quantities of starter or nitrogen fertilizers, 2″-3″ to the side of the row and up to 2″ deep with our G2 fertilizer disc behind the planter.

About the G2

G2 2x2 fertilizer disc shown with Mohawk closing wheels on a John Deere tail section
G2 shown with Mohawk closing wheels

The G2 fertilizer disc is an 8″ single disc opener that is mounted on the press wheel brackets of John Deere, Kinze, White, Great Plains, Monosem, and Yetter planters.

The G2 liquid disc is designed on a walking beam axle with 3 points of contact in the soil at all times. This patented walking beam design gives stability and balanced pressure to both press wheels in closing the seed V.

The G2 places fertilizer behind the planter. It provides even fertilizer depth in uneven terrains.

The G2 adds only 11 pounds per row added weight. It is easy to mount and easy to walk around the planter. The compact design eliminates having to find room in front or behind the planter for much larger, heavier, and more expensive fertilizer solutions.

The disc can be set to run 1/2″ to 2″ deep in the soil using the 4 holes of adjustment on the front of the bracket where the wheel bolts on. The G2's mounting bracket allows it at least 2″ more clearance under the tail section of the planter.

In a 3-year fertilizer application study (2011-2013) by Ken Ferrie of Farm Journal Magazine the G2 fertilizer disc topped their yield trials. (See charts)

Right and left hand row units are available.

Benefits of the G2

G2 2x2 fertilizer disc with high pressure kit running in the field with Zipper closing wheels on a John Deere planter
G2 running with the high pressure kit and Zipper closing wheels

Close Coupled Design

Planter depth is controlled by the gauge wheels on a planter or drill. Most fertilizer attachments are 30″ to 36″ away from the seed drop thus making it hard to control depth of the planter unit in uneven ground. Our G2 fertilizer disc is placed between the gauge wheel and the press wheel. This makes it less than 12″ from the seed drop, keeping the planting unit running at a constant depth.

Features—Design—Benefits

  • Unique one piece design that equalizes down pressure on press wheels and liquid disc
  • A heavy duty triple sealed bearing utilized in the disc
  • Powder iron oil impregnated bushings in walking beam
  • Stainless axle in center pivot walking beam = no corrosion
  • No drilling of holes on newer style JD, Kinze, White, Monosem, & Great Plains planters
  • Single disc design for better penetration
  • Adds only 11 lbs per row
  • Easy to install

Eliminates Common Problems

  • New liquid disc is tucked in behind the gauge wheel to keep it from plugging in heavy residue
  • Will not disturb the seed—adjustable 2″-3″ away
  • No need for extra heavy duty down pressure springs

New G2 Features

Easy Adjust Trash Deflector & Tube Holder

G2 fertilizer disc, adjustable trash deflector and tube holder, high pressure kit
Shown with the high pressure kit

For Low & High Pressure

  • Disc adjustable 2″-3″ from furrow
  • New curved stainless steel high pressure tube injects fertilizer directly into the slice cut by the 2x2 fertilizer disc
  • New high pressure injector orifice threads into tube
  • Adjustable trash deflector (shown in red)

High Pressure Injector Orifice

Injector orifice (view of both ends)
Orifice end (left) and hex end (right)

 0 for two orifices included with high pressure kit

 11.80 per additional orifice

Schaffert Mfg.'s new high pressure injector orifice is made to screw into the end of the G2's high pressure kit.

This kit works well with Schaffert's hydraulic and electric-driven pump systems.

Features of the orifice include:

  • Screws inside 3/8" stainless tube
  • Easy to install with an Allen wrench
  • Orifice OD is 5/16"
  • Stainless steel compact design
  • 10 color coated orifice sizes
  • Injects high pressure, 2-80 GPA
  • Universal models - fits many machines
  • Allows tube to be closer to soil surface, eliminating trash buildup

To find the correct injector orifice for your high pressure kit, you will need to know:

  • Number of rows
  • Row spacing
  • Travel speed
  • Pressure
  • Kind of fertilizer
  • Product weight
  • Gallons per acre

PLEASE NOTE: We normally recommend using only 1 orifice under pressure when running 7-15 lbs of pressure . However, using 2 orifices under pressure can be beneficial because it will help eliminate fertilizer splatter or misting/volatilization of fertilizer when done in the following manner:

  • Use the correct size orifice above for 15-30 psi pressures
  • Use 2-3 times size orifice below, creating 5-7 lbs pressure to stream fertilizer into the soil
NEVER USE 2 OF THE SAME SIZE ORIFICES IN YOUR SYSTEM!!!

G2 Arm Brackets for Kinze & Monosem


New and old arm brackets for Kinze and Monosem tail sections

The redesigned arm bracket allows the back press wheel to run evenly with the front press wheel, keeping constant pressure on both wheels.

With the new arm bracket, farmers will no longer have to cut into the planter's tail section.

Stalk Deflector

G2 stalk deflector pushing away cornstalks in the field

 40/row Stalk deflector

Notched Disc for Heavy Residue

notched G2 2x2 fertilizer disc
notched G2 fertilizer disc after use in the field

This notched G2 2x2 fertilizer disc works well when planting into wet or dry heavy residue field conditions (such as soybean stubble and heavy corn residue).

The notches in the blade help it "walk" over the residue, keeping the disc rolling in the field instead of plugging or stopping.

This specialized G2 is a true mud hog. In some conditions, using the notched style blade will allow you to eliminate the residue scraper.

Conversion Kits


Updated tail section for John Deere 7000/7100 series planters
Converted tail section for John Deere 7000-7100 series planters

After much demand, Schaffert Mfg. designed a bracket that works like the newer John Deere planters. We now offer G2 fertilizer disc conversion kits for older style John Deere 7000/7100/7200/7300 series planters and Monosem 2001 and newer planters that will allow the G2 to fit them.

Check your tail section to see if it has two holes at the bottom to offset press wheels. If it does not, you will need to order the conversion kit along with the G2.

John Deere 7200/7300 planters will not need new press wheels because they already have the correct bearing for our G2 kit. The only ones that need to have new wheels are the ones with water pump type bearings.

G2 Tops Farm Journal Yield Trials

In a 3-year fertilizer application study by Ken Ferrie of Farm Journal Magazine the G2 fertilizer disc topped their yield trials.

2013 Yield by Soil Type Compared with Check

Graph comparing bushel yields using G2, in-furrow, and G2 plus in-furrow

In four of the five soil types, yields increased when starter was applied 2″ to the side of the seed in-furrow, using the G2 fertilizer disc. With the dual placement of fertilizer for the young corn plant, this creates a relay effect as the different fertilizer bands are reached.

Source: Eckelkamp, Margy. "Smooth Hand-Off." Farm Journal Magazine. 25 Jan 2014. www.agweb.com/article/
smooth_hand-off_NAA_Margy_Eckelkamp

Adding Pop-Up in 2012 Pushed G2 Yields To Top

Graph comparing bushel yields with and without pop-up using G2 and various competitor's attachments

Each of these attachments provides a different placement relative to the seed and mounts differently on the planter. In 2012, there was an above average response to including pop-up fertilizer across two corn-on-soybean fields in central Illinois.

Source: Eckelkamp, Margy. "Starter Test Plot Roundup." Farm Journal Magazine. 26 Jan 2013. www.agweb.com/article/
starter_test_plot_roundup

Adding Pop-Up in 2011 Pushed G1, G2 Yields To Top

Graph comparing bushel yields with and without pop-up using G1, G2, and various competitor's attachments

This chart displays the average yield results across two corn-on-corn fields in central Illinois. The farther the starter was placed outside the furrow, the more likely that adding pop-up starter in-furrow would increase yield.

Source: Eckelkamp, Margy. "Strategic Placement" Farm Journal Magazine. 28 Jan 2012. www.agweb.com/article/
strategic_placement

Testimonials

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