good post of a pertinent article.
Most of the originators of the regenerative movement forget to mention that the purpose of tilling is actually disturbance.
Disturbance is what nature uses to reset the natural progression of succession, so it isn't such a bad thing to do if you are using it for the right purpose.
If you have a field that has been left alone for several years and
trees you don't really want are growing there, then a disturbance might be called for to reset that field from growing those particular trees.
If you have depleted soil you can speed up the regenerative process by doing a one time tillage, this will put into the soil all the organic material that you spread on the surface.
The effect is that you speed up the influx of organic matter, which then speeds up the growth of bacteria and fungi, and that is what we want to happen.
If I took two identical fields and never tilled one but instead grew a multi type plant cover crop and chopped and dropped this crop twice a year I could have great soil, 12 inches deep in around 4 years.
If I took that same field and once the covers were growing well, I added
cattle to graze the field, moving them in a mob grazing pattern so they were one place only one or two days, I could get to that 12 inches of great soil in two or three years.
If I took the second field and grew the same cover crops and instead of cutting them to let them lay and rot I waited till they were near maximum height and density then tilled these under, I would reach that 12 inch deep great soil in 2 years or less.
If I did this tilling, replanted and repeated the once through tillage, I would be at the 12 inch great soil at the end of the second tilling. I would then come back with plantings of what I wanted to grow there, in alleyways with trees defining the alleys.
At this point I have, in two years, reached the level it took Gabe Brown and
Mark Shepard 4 years and more to achieve using no till methods, so I have reduced the wait time for great soil by doing one tilling per year for two growing seasons.
Now I never have to till again, unless I want to completely change the succession plants from what I started.
I don't have to worry about pH, the plants I grow will be able to make those changes for me, I will have soil with plenty of fungi and bacteria growing in it to
feed the plants I sew by broadcasting them on the surface too.
If I take this twice tilled field and now add cattle grazing in a mob situation, I triple the effectiveness of the system and my soil gets richer, faster, just like the no till field will get to in another two years.
Diversity is the key element that nature uses to grow all the greenery on her skin, by understanding how she uses diversity and disturbance, we can set lands up to grow what we want and maintain soil nutrient levels far easier and higher than the farmer who follows the "modern methods".
Tilling is not something that is great to use every year, it does have a place but it isn't used the way most farmers use it, we use tilling to enhance and add to the soil, then we leave it to do the things soil likes to do which is grow a wonderful microbiome that feeds all the organisms that call soil home.
What we end up with is a fully
sustainable soil where we can grow foods, harvest those foods and replenish the soil nutrients without any extra expense on our part.
If we should ever find evidence that our great soil is or might be missing some elements for nutrition, we just spread them on the soil then run the mower through for a chop and drop cover over our just spread goodies.
Redhawk