Heavy offset disc or Disc chisel

Looking for a primary tillage tool for CRP and corn stalks. Will be using a 4440. What size disc chisel or heavy offset disc will fit well with tractor? Sandy loam soil. This is on organic ground. Currently using moldboard, disc harrow, soil finisher, cultimulcher . Trying to get away from moldboard as primary tillage.
 
We pull a John Deere 1640 plowing disc with our 4440, does an excellent job on corn stalks. Ours is just shy of 14 ft wide overall.
 
I pull a 9 shank Glenco soil saver, basically a disk chisel, with 160 hp tractor in some fairly heavy ground. It does a great job and the tractor barely knows it is there. In sandy soil you may be able to pull it. Getting pricey lately though.
 
Organic ground meand no chemicals so only mechanicly weed removel. The moldboard buryies the weed seed so they do not sprout like they do from use with something that does not bury them and neither of what you are talking about will do that. So to trade off the moldboard for something else that takes less time to prepair seed bed you are trading that time for more cultivation to get rid of the weeds the moldboard will do. Do you want to leave the crop residue on top for some specific reason. That could make the difference as I believe the disc chisel will bury more than the offset disk will.
 
What I have found out on moldboard plowing is does bury the weed seeds but the next time you plow the seeds are back. What I'm trying to do is get my seed bank down. Am I better off with a heavy offset or disc chisel? Thanks for your replies.
 
I think you'd be better off staying with the moldboard in your CRP ground. The offset is not going to do a very good job of breaking that up if it's got much sod on it. Corn stalks... the offset can handle... but there again I think I'd lean more towards a vertical tillage tool like a Salford RTS. In terms of the Salford I think your 4440 would be well matched to over matched in the 16-20' range. 16' would be better...
In terms of offset... 12' would be a lot... depending on how much the smoke screw has been backed out and whether or not you have it dualed.
I much prefer the Salford for knocking down stubble tho... it's quick and efficient as long as you don't have real tight ground with sod on it.

Rod
 
Well I'm looking at a 10' wilbeck or a 7 shank jd disc chisel. The CRP was worked. 2 yrs ago with a Krause disc because it was part of the government contract. The Krause sunk in a little. It is black sandy loam like what you find in the thumb of Michigan, not hard clay. Seed bank is what I'm really worried about and was wondering what guys are using elsewhere because it's 50 50 here. Thanks for the reply.
 
I'm really not familiar with your ground... I just know that here... where you have a well formed sod after years of no cultivation... and offset will make a damn good mess if you don't burn it down in the fall... and even then it still makes a pretty chunky mess. You can certainly chew it up with enough passes and enough time but I've always found the moldboard to be a lot more efficient at dealing with sod than the offset...

Rod
 
By the time you plow again most of the seeds will have gotten beyond the sprouting stage and will not be a viable seed to be growing.
 

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