No-Till Residue Is Your Friend — Not Your Enemy

Key decisions made at harvest could either help build a vibrant no-till system or nullify the benefits residue provides to your farm ground.

I recently spoke at the Southwestern Wisconsin No-Till Field Day, where we’ve had an extremely wet spring. One recent storm in this area dumped more than 10 inches of rain in 1 day.

There was tons of soil loss and erosion on traditional and conservation-tillage fields in that area. But in no-tilled fields, I noticed the extreme weather was handled very well.

Probably the most important reason these no-tilled fields survived the storms without erosion was because of their high residue levels.

We visited two farms on this field day and they were both no-tilled, although farmers at both sites handled their residue a little bit differently.

Answering Questions

On one farm, vertical tillage and chopping corn heads are used. On the other farm, only moderately aggressive knife rolls are used.

Both farms had excellent stands and no erosion rills in the fields, but the farm where vertical tillage and chopping corn head was used seemed to have a bit more soil movement.

The question of the day at the field day was, “How should we manage residue in a no-till corn and soybean rotation?”

To answer this question, one must first understand that with no-tilled systems, residue is the key to reducing soil erosion and it’s our principle source of carbon to build organic matter in soils.

Residue protects the soil from rain impact and can increase the soil’s water-holding capacity dramatically.

Crop residue and roots bind the soil. Crop rows act as mini terraces that slow down water…

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Leverich jim

Jim Leverich

No-Till Farmer's Conservation Ag Operator Fellow for 2022, Jim Leverich is a no-till farmer near Sparta, Wis. His 1,000 acre-farm has been in his family since 1864 and no-tilled since 1984. An innovator and educator, Leverich has 35-plus years of no-till and on-farm research experience, and possesses a deep, practical understanding of what makes no-till work. For his contributions while at the University of Wisconsin Cooperative Extension Service, Leverich was named the No-Till Innovator of the Year (Research & Education category) in 2006. A talented presenter and writer, Leverich was a regular guest columnist for No-Till Farmer in 2011 when it earned the Gold Medal as the nation’s top newsletter from the American Society of Business Press Editors.

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