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| Where did you learn that, Iowa State University has published several studies over the years. No tillage allows the top layer of soil to build high levels of nutrients,.
Their tests prove that tillage done every so many years results in less runoff of nutrients into the surface water because less nutrients are on the surface to run off. Also in Iowa we are not allowed to spread manure on top of frozen ground because of runoff. Explain to me why manure must be worked in to prevent runoff but organic material that breaks down over the winter does not result in runoff of nutrients in the spring, Is not dried manure just decaying plant material. Humus is a valuable part of soil health but as far as know Humus can only be created by being buried in the soil. My dog and the squirrels know that to preserve bones and nuts they must bury them in the soil. Tillage is a tool that if used properly it can improve the soil. But it can also be abused. | |
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Soil health is part of a strategy to combat climate change – McDonalds want you
