Lee I would think it was loose soil in a lab, could be wrongOk good credible fact but what constitutes 'zero compacted soil'?
1. Land under a no-till and CTF regime.
Or
2. Land that is thoroughly cultivated so say Pan bust entire working width of the machine down as deep as possible then obliterate everything above that into small particles - possibly what a spading machine does?
Lee I would think it was loose soil in a lab, could be wrong
Lab 'loose' soil will have been placed very carefully into the container, and would not even have been dropped from a height, very tedious and nothing like thoroughly cultivated soils. The point of which I would assume to be creating a soil with a uniform density throughout.
I think the fact that it is loose may be a slight white elephant, and perhaps it has more to do with the behaviour of root growth?
Article here:
www.soilcursebuster.com/Roots_Rooting_and_Water.pdf
site sells vertical tillage machinery
www.soilcursebuster.com
they are already working on the continent.
Y-Th.
Compaction must be worse that we thought then.in the 1980s wheat roots were found 2 m down