The phrase "vast soil" is correct and usable in written English.
It can be used to describe a large expanse of land or earth, often in the context of agriculture or geography.
Example: "The farmers were grateful for the vast soil that allowed them to cultivate a variety of crops."
Alternatives: "expansive land" or "broad earth."
I am in a vast, cold, soil-smelling space.
Its roots act as a vast net keeping soil in place.
Focus is increasing on resource extraction in places such as the Athabasca tar sands, vast petroleum-rich soil deposits in northern Alberta.
His large-scale sculptures, called Earthworks, engaged directly with nature and were created by moving and constructing with vast amounts of soil and rocks.
But after a while, your eye locks in and you start to see how it should be – it's that balance between making everything look natural and not showing vast amounts of soil.
"I'm getting turf on Tuesday," he said, pointing to a troublesomely vast stretch of soil in front of his stucco home, which resembles a Hollywood mogul's dream house from the 1950's -- a rarity for stately Southampton.
Stunning gorges and nameless valleys in Arnhem Land, a vast tract of untouched soil in the tropical Northern Territory.
Finally, the virtually unrivaled natural resources of the United States -- vast expanses of land, tillable soil, large bodies of fresh water, and natural gas -- will become the sources of future competitive advantage, as will the absolutely unrivaled diversity of the country's human resource base.
If brackish water and seawater could be used for crop cultivation on salinizing soils, vast amounts of fresh water would be saved (Rozema and Flowers 2008).
This implies that the fitted models can also be safely applicable and valid over a vast range of soils and regions where A. johnsonii occurs and outside the study area.
