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Driftless SW Wisconsin | The answer depends on a number of factors. Most of our Dawn strip till customers do not use a coulter at all on the planter, just Trashwheels. We find the Trashwheels are more important than a coulter. This is true whether our Pluribus unit is being used in the fall or spring
If you are doing fall strip till with a mole knife in certain soils in the fall without a row cleaner there can be advantages to using a coulter in the spring to break up remaining clods, and fill in any remaining open knife slot.
The best approach is to have both coulter AND row cleaner. In this case I would suggest the 3/4" 13 wave on our Dawn 1572 combo.
I would NOT recommend any type of combo with a floating row cleaner (we produce both types) due to the difference in soil and residue on the strip vs off the strip, voids etc. I believe in fall knife strip till the row cleaner and coulter depths need to be controlled from the bottom of the vee openers.
The combination I would recommend is the picture below except a 3/4" 13 wave instead of the Ripple blade shown. Good luck in your strip tilling.
Jim at Dawn
Edited by Jim 8/10/2006 10:09
 (Dawn1572Ripple.jpg)
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 Dawn1572Ripple.jpg (50KB - 188 downloads)
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unit mounted coulters for planter
