Home Discussion Forum Nutrient Management Tillage Selection – Disc

This topic contains 1 reply, has 2 voices, and was last updated by Profile photo of Rachel Rushmann Rachel Rushmann 2 years, 4 months ago.

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  • #920
    Profile photo of Zach Sutter
    Zach Sutter
    Participant

    Fall discing is a common practice for “primary” tillage in my area.  Guys will disc shallow, light, or particularly stone-y fields in fall in lieu of chisel plowing.  Discing is also used to level fields that would otherwise be no-tilled with shallow wheel compaction from harvest.  In spring they will either plant as is, disc again, or field cultivate.

    My question is, what is the closest approximation to this practice in SnapPlus?  Based on my reading of the tillage selection options, Fall Field Cultivation does not capture the tillage intensity.  Fall Vertical Tillage seems to be the closest I can get.  Does anyone agree or disagree?

  • #922
    Profile photo of Rachel Rushmann
    Rachel Rushmann
    Participant

    Hi Zach,

    It is all about the number of passes that cover residue with soil, not so much the implement, except for vertical tillage which is very aggressive on pulverizing the soil structure.  We want the soil covered with residue throughout the year.

    • A 3 pass system -Fall chisel, disked: Fall chisel plowing (twisted shovel) with spring disking (tandem light finishing) and field cultivation before planting.
    • A 2 pass system -Fall chisel, no disk: Fall chisel plowing (twisted shovel) and field cultivation before planting.
    • A 1 pass system is cultivating then planting.
    • No pass system -No-till has no soil disturbance except for a minimal amount at planting. The RUSLE2 planting operation used for no-till row crops is in almost all cases “Planter, double disk opener w/fluted coulter” which disturbs 15% of the soil surface at planting.

    So, go by the number of passes you are using…if you end up using the disc again, then count that as a pass in your system. Hope this helps. Any questions, reach out to our DATCP nutrient management specialist:

    Sue Porter
    (608)224-4605
    Sue.porter@wisconsin.gov

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