Schaffert Over The Wheel Fertilizer Tube For John Deere Air Seeders
Benefits of the Stainless Fertilizer Tube Over the Press Wheel
- Places fertilizer behind the press wheel for a cleaner drill
- Rebounder's concave design places all the seeds in the bottom of furrow
- The press wheel presses seeds in before fertilizer is placed above the seed
- Bracket models fit the 9″ (SDX & JD type) press wheel
Story Behind the Design
This is one of our earlier fertilizer tube attachments that we have put together for the John Deere 750-1990 No-Till Drills. As drills improved from the early 750s to the present-day 1990 drills, changes have been made.
Early on we tried to run a stainless tube down the back of the seed boot and drop the fertilizer into the seed V ahead of the press wheel but the fertilizer would splash back on the press wheel, coating it and bearings with fertilizer. Then we added the Rebounder to the seed boot, replacing the seed flap that John Deere had. The seed flap didn't have a concave design like the Rebounder does nor was it as thick as the Rebounder.
By putting the Rebounder on in place of the seed flap we helped put all the seeds in the bottom of the furrow as well as created a tab on top of the Rebounder to hold the fertilizer tube in the furrow. This helped keep fertilizer off the bearings of the press wheel, but it still let fertilizer build up on the press wheel tire itself. The press wheel would also rest on the Rebounder when the drill was in the up position and break the Rebounder off.
This prompted us to make a tube to go behind the press wheel tire. This worked fine as long as there wasn't any trash involved. Where ever there was trash such as cobs and stalks they would get caught between the press wheel and the stainless tube and stop the wheel from turning.
Other problems with the stainless tube over the press wheel were the cast closing wheel bracket would sometimes come down and bend the tube and bracket that went over the press wheel. This would happen if the farmer went over too steep of terraces or through too deep a ditch in the field.
With several years under our belt and working with farmers we have modified the fertilizer tube over the press wheel to work and perform much better. Our new stainless steel fertilizer tube is easy to install and runs over and behind 9" John Deere press wheels.