This is the third in our series on soil health principles as presented by Buz Kloot, film maker and Research Associate Professor at the Arnold School of Public Health, University of South Carolina in partnership with the Natural Resources Conservation Service. We’re interested in principles because they provide the foundation for the decisions we make on a daily basis about how we manage our grazing and cropping operations. If you’ve missed any of the series, you can catch up here: Part 1 and Part 2.
Keep the soil covered.
You can’t spend much time at all in farming and ranching without hearing this. Plants, whether as cover or residue, protect the soil – keeping it cool in summer, and warm in winter. Cover also provides soil microbes with the food they need to their jobs for us, whether through root exudates or residue that microbes break down. Cover also prevents the invasive weedy species most folks dislike.
In this video, Buz shows how gardeners, organic growers, and row crop farmers use cover crops to protect the soil. He also reveals his own special “6×6” tool for taking down the cover in his garden.
For a grazier, keeping the soil covered depends on managing for both residual and residue, as Jim Gerrish describes in this article. Though the two terms sound similar, they provide very different services for your pasture’s health. “Residual is the living plant material left behind after a grazing event. For clarity we often say ‘post-grazing residual’. “Residue” is dead plant material left on the soil surface. It is synonymous with litter or duff,” says Jim.
Tracking and managing grazing height is something we’ve spent a lot of time on in On Pasture. But for a quick overview, check out this two part series from Jim that comes with pictures and video:
How do you implement this principle on your operation? What are some of the challenges you encounter? We’d love to hear in the comments below.
Part 4 in the series is all about roots. Enjoy!