The Jean method, no tillage or fertilizer in 1900

Agriculture and soil. Pollution control, soil remediation, humus and new agricultural techniques.
Janic
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Re: The Jean method, no tillage or fertilizer in 1900




by Janic » 23/11/19, 21:07

yes we can wonder why it only happens now because apparently some people knew but never talked about it, too bad, this forgotten technique might have a bright future in our time
it's very simple it competed with herbicides and Monsanto and its Rondup would not have existed.
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izentrop
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Re: The Jean method, no tillage or fertilizer in 1900




by izentrop » 24/11/19, 02:04

nico239 wrote:If you go to the Geffroy-Poncins document, on the last page you have the farmer Jean : Mrgreen:
https://potagers.forumactif.com/t185-te ... n-1900#270
Ok, I hadn't noticed it was a pdf.

Seen the shape of the teeth, it looks like a subsoiler, but in less deep work.
Moindreffor wrote:this is called dethatching,
Yes, but repeat it every 15 days until sowing, going deeper each time.
I have the impression that this causes more mineralization than a simple stubble cultivation and drying of the soil, to avoid with the droughts that we know today ....
A good point compared to the plowing practiced at the time, or they incorporated the manure at the bottom of the plow line, is that his was well distributed in the first centimeters of the soil and ventilated by its multiple passages. . it could therefore mineralize easily, unlike that buried by the plow. :P

There are conflicting claims in this document:
Mr. Jean's method consists of
simply by superficial scraping intended to aerate the soil and
keep its humidity. These two conditions being essential to the
proliferation of nitrobacters. This operation is repeated from 5 to 15
days.
By doing so, the nitrogen enrichment is such that Mr. Jean was able
make 13 successive straws without manure or fertilizer!

A little further :
In 1913, M, Guillebert des Essarts, investigating here on behalf of the Society
of Agriculture of Aude, had also found a herd of 150
sheep. But he said in his report that the herd was often
with neighbors who agreed to the free route in exchange for
manure.
He estimated the total production of manure at Bru at 100 or 150 tonnes per

[bad language mode activated] He thus force-fed his soil for several years, which explains this. Finally this is the reason which seems to me the most probable, the nitrobacters have good backs, with in addition an increased management of weeds. :P

This kind of work today would have cost dearly in oil and labor ... a green loosening fertilizer and letting the earthworms do for aeration is perhaps just as well see better than multiple work to the tractor :?: : Wink:
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VetusLignum
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Re: The Jean method, no tillage or fertilizer in 1900




by VetusLignum » 24/11/19, 11:50

This technique is known as "false multiple sowing".
https://www.arvalis-infos.fr/pratiquer- ... ticle.html

So certainly, the vibrocultivator attacks the soil less than a plow or a rotary harrow (I don't quite know how the soil reacts in the event of heavy rain); but the "false multiple sowing" consumes time and energy; and in addition, it will gradually deplete the stock of organic matter in the soil.
The technique of direct sowing under cover allows a progressive improvement of the soil, by increasing its percentage of organic matter.
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Re: The Jean method, no tillage or fertilizer in 1900




by izentrop » 24/11/19, 20:17

VetusLignum wrote:and in addition, it will gradually exhaust the stock of organic matter in the soil.
Finally it is a thing of the past. :?
This is what I also said for the mineralization of OM.
A series of experiments carried out at Grignon gives precise figures:
dosing the drainage water which flowed from a land maintained in
fallow without nitrogen fertilizer, the author found that in a wet year, a
hectare gave 200 kg of nitric acid (which corresponds to 1250 kg of
sodium nitrate),
It must be said that at the time we were right in the middle of coal and atmospheric pollution of all kinds. Nitric acid enters the composition of acid rain, where it is formed by hydration of nitrogen dioxide NO2, an important atmospheric pollutant from the different nitrogen oxides NOx released by the different combustions. We don't have any data on atmospheric fallout at the time, but that should not be negligible. https://www.espacestemps.net/articles/m ... pollution/
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