Here’s an article from November 2014 that puts conventional wisdom on it’s head. Enjoy!
Alan Sundermeier, a researcher at Ohio State University says, “You can’t solve your problems with steel. Even with a subsoiler that may have minimal surface disturbance, it’s really not solving the problem. We’re seeing that soil structure can be better solved by using natural rooting systems through cover crops.”
In this video you’ll see the results of their experiments on compaction plots comparing subsoil steel vs. cover crops. Sundermeier and his colleagues compacted fields in wet conditions and then compared the differences between treating the compaction with subsoilers and with cover crops. Plots treated with plants ended up producing much better than those treated with steel.
Why? Drilling into compacted soil is like drilling into concrete. It works best if you start with a small drill and then increase in size. That’s just what the roots of plants do, starting small and then growing larger to create space in the soil. Then water and the roots of other plants, will follow the channels created by cover crop roots loosening the soil and creating the pore space that is a part of really good soil.
The video is 4 and a half minutes, but it could change the way you look at soil compaction and what you can and should do about it.
Want one more reason to leave the steel on the lot? Chip Hines writes about the dangers of “Iron Disease.”
Thanks to the National Grazing Lands Coalition for making this article possible. Click on over to see the great work they do for all of us. Thank them for supporting On Pasture by liking their facebook page.