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Sheet erosion with Verticle tillage?
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Posted 6/15/2011 10:57 (#1819655 - in reply to #1819632)
Subject: RE: Sheet erosion with Verticle tillage?



central - east central Minnesota -

Pofarmer - 6/15/2011 09:46

Had some pretty heavy rains here the other night.  I'm driving around and looking, and some of the fields that have had primarily, or all, Verticle type tillage, talking about Salford and CaseIH 330 Turbo, have TERRIBLE sheet erosion.  The fields that are no-till have a few gullies.  The fields that are conventional have some sheet, maybe a little rill, but not the extent that the VT fields do.  This is just a drive by.  Looks to me like the VT machines are leaving a thin layer of very fine soil on top of a layer of, if not compacted, then firmer soil, and the finer top layer wants to wash off. 



I see similar erosion with the guys that used crumblers behind or on their field cultivators - when we had a heavy rain a week or so ago . . . .. that fine soil washed like heck. The rougher gound seemed to stay intacted. I had lots of sod bumps from my alfalfa residue - so I had pretty much no soil movement. Those with heavy stalks had good holding power also.

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