Nature is modest, she doesn’t like to be left naked. Seeing miles of bare soil is a common occurrence in the modern era. Whether driving down the road or flying in a plane, we often experience bare fields as far as the eye can see. We think of it as “Normal” because it’s been done regularly for so many years, but bare soil is not normal. Nature never designed itself to be tilled and left to burn in the sun. The plants that cover the ground are meant to be there to protect, build, and nourish the living soil. Think about your skin as an example. How does it feel when it is exposed to the hot sun after being scrapped or cut open? The soil did not evolve to be exposed. Using Cover Crops, in combination with other regenerative practices, creates conditions where soils can regenerate themselves instead of eroding and/or desertifying.
13. Bare Soil:
Increases water and wind erosion. Currently, we lose 4 tons of topsoil per acre per agricultural land.
Allows for the burn-off of soil carbon through heat, oxidation, and increased activity of bacterial communities.
Destroys soil aggregates. Exposed aggregates are fragile and get pulverized by raindrops. This creates a hardened, sealed soil surface that reduces water infiltration and increases runoff and erosion.
Latent heat/heat island effect: Bare soil can get extremely hot, not only burning the soil life on the micro scale but can create a heat island effect on the macro scale changing the small water cycle so that rains are less frequent.
Bare soil reduces infiltration rates of water, this means that rainfall is less effective at restoring soil moisture and recharging underground water supplies.
14. Cover Crops:
Reduce water and wind erosion (if the soil has above-ground protection and the root biomass is present, it is far less susceptible to erosion).
Shade the soil from direct sun, keeping soil temperatures down which protects carbon-filled soil aggregates and the soil life that accompanies them
Protect soil from raindrops. When rain falls on cover crops, the speed of the droplets is slowed down and dispersed, allowing water to gently filter into the soil.
Photosynthesize and pump carbon into the ground to share with soil organisms – building soil organic matter and helping reverse climate change.
Reduce heat island effect and can help repair small water cycles by increasing beneficial evapotranspiration processes. This means more frequent rainfall and more, “effective rainfall”, increases soil moisture and restoration of aboveground and underground water supplies.
Increase water infiltration rates and actually decrease evaporation(which is contrary to what most people are taught)
Sadly, we haven’t even scratched the surface. But, there is hope when we go beyond degeneration, beyond sustainability, and look through a new lens of regeneration. Stay tuned to learn more about regenerative agricultural practices and the ways you can support them through your thinking, your purchases, your voice, and your actions.