true soil

true soil

[′trü ′sȯil]
(geology)

true soil

The upper layer of soil.
References in periodicals archive ?
In the ranks of true soil advocates are scientists from Kazakhstan, Ukraine, Belarus, Poland and even Angola, who presented the results of their unique research and observations in a specially prepared two-volume book containing about 200 scientific articles.
Soil borne pathogens may be Euedaphic pathogens that are true soil organisms such as Bacillus anthracis, Clostridium botulinum, Listeria monocytogenes, Francisella tularensis and Yersinia enterocolitica, etc.
We could only hope that taking control measures for these online violence and insurgence will prevent them from expanding their influence and realizing into battle fields on true soil and with real lives put at stake.
While technically not a true soil until we find organic material or evidence of life within Martian surface material, as a soil scientist I'm willing to expand the concept of soil to include the surface material on Mars that isn't rock.
If the sample does not accurately represent the true soil conditions, the test results will be misleading.