Did67 wrote:R
c) Of course a soil plays. And that there are huge differences, especially in terms of nutrient richness, ability to retain water, ability to structure by aggradation probably too (although I am not aware of any studies who have studied this!).
d) I cannot be affirmative in relation to all the situations, but there are several "experiences" of people having obtained very good pdt, in quantity by doing like me: laying on the earth, covering with clippings, compost, hay ... Were the floors always "easy" ??? Perhaps ???
I can only encourage you to make tests "all other things being equal": you do as you think, and the same day, in the same place, you leave two feet that you put on the surface and cover with hay ... You repeat this half a dozen times, and in 6 years, you will have a "pretty sure" answer!
Regarding the aggradation, despite the relative compactness of my soil with high clay content, I think I can say that there has been a real improvement: already the earthworms are extremely numerous, including very large anecic, when I breaks, for example, a motte, I find almost at each stroke one or more galleries of different diameters, on the other hand the mound disintegrates better than formerly between my fingers (although this also depends on the humidity rate), I find even flying black insects, whose name I do not know! Under ground (proof, I suppose, that there is a good porosity, air), the consistency, the color make me believe that the rate of humic mat or organic mat (?) Has increased, this which also seems normal after a few years of cover and contributions (clippings, hay, compost, crushed dry stems, hemp mulch, various organic vegetable residues ...) and the heavy work of worms during all this time.
Concerning the potatoes, I put 4 rows buried (having worked the soil on 10 cm), I add a good layer of hay as a "hilling" and finished.
But as I have about fifteen sprouted potatoes, I will find a little more space to add a row, placed on the ground, with only 30 or rather 40 cm of hay + clippings on top.