If no till is better and tilling is work, why do farmers till? Why not do less work and have a better result?
Given the economic climate, few non-corporate farmers can afford that investment without the collapse of their farm, and few corporate farmers (none at nationwide scale, afaik) are willing to invest in cost centers that threaten to decrease, rather than increase, their rate of profit growth year-over-year. One could absolutely make a case that regulatory investment in such things be imposed upon megacorp farms first, with their processes and technology made available by subsidy to smaller farms; it would be enough to structure the subsidy as inversely proportional to the acreage reaped for value, with some language ensuring that the cost of investment into land farmed by contract to a megacorp is paid to the land operator. To prevent certain abuses, they’d also have to modify farming contract law to make maintaining long-term use of the land an inalienable right, so that unsustainable output-quota farming contracts are unenforceable.
This is an unlikely outcome in the U.S., but I still appreciate the researches providing more evidence in support of it.
No-Till is one of those ideas like permaculture or Modern Monetary Theory that attracts emphatic advocates while going against conventional practice. It isn’t clear why it would just be being adopted now if it actually worked. Do you have any actual experience farming?
What evidently does NOT work is the quite new practice of industrial tilling and fertilizer, which is causing rapid breakdown of our natural environment and future potential for food production.
The industrial practices that have enable us to feed a population of 8 billion, with surplus - a lot of food is thrown out as waste because we have so much of it we really don’t have to be super strict with it.
The industrial practices that have allowed the majority of the population to do something other than be directly involved in agriculture.
What part of that isn’t working?
The sky is falling, co2 will cook the planet, industrial agriculture is poisoning the land, over fishing will collapse fish stocks.
We’ve been told these things for, what, at least sixty years now.
Now we can add A.I. will de-employment everyone.
I don’t believe any of it.
The evidence is there. Read something. Watch a video. The resources are readily available and abundant.
Make a garden patch and experiment for yourself if you refuse to accept any outside information.
This video is 15 years old. https://www.youtube.com/watch?v=q1aR5OLgcc0
The insect population is down a ridiculous amount where I live and also in neighboring germany.
I could link the study and such but honestly it's not like these things aren't backed up by my own experiences and those of my parents and grandparents.
I do find a lot lot less insects than I did when i was young. We no longer get much (if any) snow let alone the kneedeep stuff. It's harder to catch certain kinds of fish. The fishing boats where I used to visit every year go quite a bit further nowadays because those fish stocks have collapsed.
It doesn't have to cook the planet to cause massive suffering. Do you think there hasn't been global warming? What amount of global warming would change your mind?
The no-till experiments started when the destructive effects of deep deep plowing started to appear (e.g dust bowl). It's a clear sign that society realizes that the local optimum isn't sustainable.
No-till is actually quite technical if done right, often requires some level of herbicides or way to cover the soil.
The argument "why didn't we do it before" is moot, before the 19th century midwives didn't wash hands either, why are they even do it now? Right?
Tilling and using crazy amounts of mineral fertilizer definitely improves yields. But it will, in the long term, also kill agriculture to a large extent if we're not careful. We're not talking about highly speculative outcomes here: The data is pretty clear and everyone with even a large pot and some soil can run the same experiment at home and come to the same conclusions.
Farmers need to survive, they need to earn money, they will obviously optimize for short-term yield. We shouldn't judge them for this, but we _should_ find ways to solve the issue, ideally together with farmers.
1) Does this practice work in every circumstance?
2) If so, why do farmers continue the practice of tillage?
3) Why did the practice of tillage originate in the first place?
It seems extremely unlikely that the practice was adopted and then continued to persist for no reason.
There are a lot of different combinations of variables done for both tilling and not tilling depending on many factors.
Even the old testament talks about letting the land sit fallow for a whole year, so thousands not just hundreds of years.
Quick examples:
- Inversion tillage (ploughing) to bury green manure crops or bulky organic manure
- Subsoiling (deep tillage) can help break underground compaction, to allow better root penetration
- Working with soils prone to surface capping
- Full inversion tillage
- Low/min-till
- No-till
EDIT: This is a response to the question "why do it?" rather than anything in the context of the article itself.
And tillage can work well by bringing up nutrients. Some crops will do this themselves to an extent, or you can plant forage crops for a time that will bring up nutrients. But subsoiling to break deep compaction or simply bring up phosphorus or potassium from lower levels can breathe new life into a field.
Source: was full time farmer until Grandpa died.
I'm guessing less developed countries still till the soil? I have no idea.
Go and stick a spade in your garden and then try and drag it sideways. Yeah, not easy, eh? Bit too much to do by hand.
If you want to do "no till", you can get away with a less powerful tractor because you don't need to drag a cultivator through the soil, you just need one that can carry a 400 litre sprayer that blasts glyphosate all over everything every couple of weeks.
Eventually all that's left are the glyphosate-resistant plants that are choking out your crops.
And that's if your soil conditions are actually in any way suitable for no-till, which they often aren't.
> There is also grass cover that is planted after the main crop season, that is later grazed
Grazing compacts the soil, making it impossible to plant in without tilling. So no, this isn't workable.